docs(row253): record static approval and pre-confirmation residual

fix(row253): bound cleanup retries after initial inventory
fix(row253): supervise socket queries across sudo sessions
2026-10-21 21:22:16 -05:00 · 2026-10-21 21:20:14 -05:00 · 2026-10-21 21:13:30 -05:00 · 2026-10-21 21:11:49 -05:00 · 2026-10-21 21:11:31 -05:00 · 2026-10-21 20:37:57 -05:00
731 changed files with 105219 additions and 1259 deletions
@@ -25,10 +25,15 @@ green at every step. Not production software — a proven foundation.
 1. **Root is bootstrap-only.** First-class system configuration lives at the
   repository root; everything else gets a dedicated directory (`roles/`,
   `contracts/`, `missions/`, `tasks/`, `docs/`). Do not add new files to root.
-2. **Configuration**: `~/.config/mosaic-dev/config.json` is the sole system
-   config — created only by `scripts/bootstrap.sh`, never overwritten,
-   fail-closed on any problem. Repo-scoped role authority lives in
-   `roles/*.json` (versioned, reviewed commits only).
+2. **Configuration**: each stack instance has exactly one system config. The
+   default instance's is `~/.config/mosaic-dev/config.json`. Instance NAME's
+   is `~/.config/mosaic-NAME/config.json`, and its data root carries a marker
+   that names it. `~` is the home of the OS user that runs the instance. A
+   process reads only the config `MOSAIC_CONFIG` names, or the default's when
+   that is unset. Configs are created only by
+   `scripts/bootstrap.sh [--instance NAME]`, never overwritten, fail-closed on
+   any problem. Repo-scoped role authority lives in `roles/*.json`
+   (versioned, reviewed commits only).
 3. **Secrets** never enter the repository or container images; auth is
   runtime-only (read-only mount or environment variable).
 4. **Contracts** (`contracts/`) are immutable and image-baked. Missions and
@@ -177,8 +182,8 @@ Full reference — usage, fields, exit codes, safety notes:

 ## Data map (canon)

- `~/.config/mosaic-dev/config.json` — system config (user-authored; never
-  auto-written).
+- `~/.config/mosaic-dev/config.json`, or `~/.config/mosaic-NAME/config.json`
+  per named instance: system config (user-authored; never auto-written).
 - `<dataRoot>` (from config; default `~/.mosaic-dev`):
  - `runs/` — write-once run evidence (`result.json`, snapshots, `stderr.txt`)
  - `sessions/` — pi JSONL session trees, one directory per named session
@@ -5174,3 +5174,26 @@ Before: managed project/thread verbs had no Console conversation area. After: fi
 2026-10-20 04:44:54 UTC | Row 178 round 2 preparation | Before: Dewey C1 five render guards lacked killing tests. Added independent refusal fixtures, a temporary uid+1 id stub with cleanup, and empty loopback proof case; activation ordering recorded in r2 BUILD. Product unchanged; syntax/text preflight only, no test or mutant execution. Pending row 181 rebase and Sage slot.

 2026-10-20 05:10:34 UTC | Row 178 #1676 round 2 verified | Before: C1 render refusals lacked killing tests and row 181 base was pending. Rebased onto 931651f2d, kept all COUNTED/count code and tests, appended T178 tail; added independent owner/collision/absolute/charset/header and empty-loopback proof tests. Four files singly 156/156, all 24 mutants killed, metadata and sandbox fixture probes pass; scratch sweep empty. Packet agents/rocko/work/queue-178/r2/, candidate 9300a670, inventory d0dcde7b (59/59), scan 58 files no findings; in-review revs 2166-2167, expected no-token request failure. No live actions or commits.
+2026-10-21T01:28:05Z | Darkwing | row 232 #1734 installer I1 build, round 1 in review | Before: stack-release.sh managed only user units (systemctl --user), and stack-copy.sh had no bundle copy. After: --units external (adopt, activate, rollback --to, status, confirm, revert, gate --since, AWAITING-UNITS, stale-start, external-pm, --plan --expect-from) and stack-copy check --units external, copy --bundle FILE SHA, wrapper ID --create; user mode byte-identical to the base by test. First build 0af0c73c6 on 00d4cc1f6; rebased onto row 200 (cb5fdb064) as a0ffabc3f on darkwing/row232-r1; --sso refused under external (D9), row 200 config_checks run under external (D10). Gate on Sage's slot (sage-1618): cli 561/0, every scripts/test-*.sh green; 17/17 mutants killed. Results commit 84f1a91e6 (pushed, seat branch only). Manifest 7a3b4ea1 (9 paths), queue revs 2595-2596, request comment 29825, reviewer Filbert. Packet agents/darkwing/work/queue-232/BUILD.md.
+2026-10-21T04:50:44Z | Darkwing | row 233 #1735 installer I3 build, round 1 in review | Before: root had no upgrade driver for root-owned units and no host run sheet; stack-release.sh had no rehearse --backup last and no external plan refusals. After: scripts/stack-upgrade.sh upgrade and rollback (r6 A1-A5, A2f, R1-R4) with 20 tests, docs/guides/host-run-sheet.md, TOOLS.md lines, and on Sage's rulings stack-release.sh --backup last, BACKUP_STORE and the --plan refusals open-activation and migrate-required (3 tests). Base e65a3ab4d (row 232's landing). Gate on Sage's slot (sage-1704) on d99166ade: cli 616/0, every scripts/test-*.sh green, 1201/0 summed by awk; m1-m8 8/8 killed. Correction: the process sweep after the gate found an orphaned sleep 60 from the lock test's flock holder (N1); 08db6ac3f fixes it test only, Sage ruled the gate stands (sage-1707), rerun c0 20/0 and m1 killed with 0 left (sage-1708). Tip 1a1dc80ca (pushed, seat branch only). Manifest 464ce9eb (7 paths), queue revs 2644 and 2647, request comment 29901, reviewer Filbert. Packet agents/darkwing/work/queue-233/BUILD.md.
+2026-10-21T06:37:41Z | Darkwing | row 240 #1746 installer I4 build, round 1 in review | Before: root had no host check for the bwrap AppArmor profile, its pins or a boot unit, and stack-upgrade.sh exited 1 args-failed when the args move after A5 failed, while exit 1 means the old copy runs. After: scripts/case1-hostcheck.sh (seven items, --check, --enforce, --upstream), scripts/case1-pins.sh, mosaic-hostcheck.service and 16 tests; the args move failure exits 5 args-failed, documented in TOOLS.md and run sheet section 6 and tested; run sheet section 3 puts the pinned npm on PATH and names the bin/claude.exe --claude path; sections 8 and 10 have precheck lines. Verification: slot run r1 on 47ec9fe2f failed at the singles (the new N1 test's after hook threw ENOENT after the fixture cleanup removed the root); b45852daa drops the hook; r2 on b45852daa green: singles 16/0 and 21/0, c0 plus M1-M8 8/8 killed, cli 639/0, scripts 585/0. Candidate darkwing/row240-r3 ad1b23ab2 on c771a36f4, manifest 573ece95 (9 paths), revs 2694 and 2695, comment 29943.
+2026-10-21T09:00Z | Herb | row 215 C2-04 implementation started | Before: business files reject library entries and root consumers assume code projects; the organization writer can change all project mappings. Plan: approved manifest 2522025af on C2-01 a2c72ac95, Filbert reply to herb-0056, scope sage-1848/1852/1860. Focused slot sage-1869 observed expected red mapping and M9 cases, then 14/0 green for new T1/T2 cases, no skips; clear herb-0062 with empty test/fixture process scan. After that clear, T3/T4 tests and host-only mirror/bus implementation continue under sage-1874, unrun while Sage holds the slot. Full singles, suites and implementation review remain pending. No source commit, push or live change.
+2026-10-21T13:29Z | Herb | row 215 C2-04 source verified for candidate review | Before: business code assumed every project had a root and organization writes could replace project mappings. After: library mappings load without agent checkouts or publish grants, project mappings are protected before and after serialization, host-only bare mirrors share a bounded publication lock with sync, and library.file/library.status are human-only async bus reads. Base f8276c5eb preserves all nine landed overlaps. Granted sage-2008 whole singles: 16 files, 451/0, no skips or cancellations, ended 13:27:27.279728Z; all source hashes unchanged, process scan empty, no own-path drift through 8a04f4aa4. Full landing gate and implementation review remain pending; no HTTP, sync writer or live change.
+
+2026-10-20 19:09:44 UTC | Gander row 196 #1694 design phase | Before: tester TCP reaches every local uid and human proofs do not bind the socket peer. After: design draft at agents/gander/work/queue-196/DESIGN.md inventories listeners, proposes private tester HTTP and SO_PEERCRED binding, aligns the per-request principal contract with Morgana and Gizmoduck, and lists migration, tests, mutants and same-uid limits. Python versus other credential options and Console provenance require Duckworth ruling. Documentation only. No product code, suite, live probe, secret access or deployment.
+
+2026-10-20 19:16:20 UTC | Gander row 196 #1694 design r2 | Before: Duckworth r1 requested concurrent helper-fd evidence (B1) and selected O1 with interpreter, proof-only and image conditions. After: design adds eight concurrent genuine proof processes plus a racing copier, M20 swapped socket and post-helper socket survival, root-owned system ELF pinning and activation evidence, safe gid validation, cap traffic without helpers, and unchanged P19 R2 text. Mos accepted socket-only tester access (mos-1015 via sage-1363); any authenticated browser relay is a separate row. Documentation coverage checks passed. No product code, suites or live action.
+
+2026-10-20 19:21:19 UTC | Gander row 196 #1694 design approval and N5 | Before: Duckworth approved r2 (duckworth-0009, cb6d840df) with a nonblocking interpreter-upgrade note. After: r3 chooses startup safety revalidation, appends actual interpreter identity to bus/peercred-starts.jsonl and retains old activation evidence. Operator re-pin uses the next reviewed copy, respecting already-active refusal. Added task-by-task PLAN.md for inline implementation and independent manifest review. Documentation checks passed. No product code, suites or live action.
+
+2026-10-20 19:34:28 UTC | Gander row 196 build paused at design mismatch | Before: approved design promised Unix tester cleanup only for the owned inode. After: scratch test shows Node/libuv close unlinks a replacement inode before JS close handlers. Evidence agents/gander/work/queue-196/evidence/tester-cleanup-blocker.txt. Sent Sage/Duckworth gander-0016/0017, recommending explicit same-uid residual with private 0700 parent retained. Interpreter, concurrent peer, principal, human, peer-transport, transport, tester and process single files passed. Partial code uncommitted, tester transport not wired. No suites, mutant batches or live actions.
+
+2026-10-21 18:45 UTC | Gander row 196 preservation before rebase | Sage-2051, Mos order mos-1193, explicitly authorizes commit and fast-forward push of the current build before deferred full verification. Product and evidence preserved together; prior focused checks and stopped gates are recorded in the row196 packet, with no claim of full acceptance. Next: rebase onto a36523713 on new gander/row196-r2, report range-diff/patch-id/conflicts, then await Sage's clear for M1-M29 and all requested suites. No live action, force push, branch deletion or tests during hold.
+
+2026-10-21 21:24:47 UTC | Gander row253 #1758 design r1 | Investigation began21:12Z under sage-2162; recorded now. Before: case2 installer still renders tester TCP and case1 acceptance requires it. After: proposed design covers socket marker migration, actual configured dataRoot within unchanged hardening, target-uid metadata queries, kernel-peer acceptance observation and explicit same-uid residual. Initial inventory saved; no passing final static-check claim, product edit, test, host or live action. Duckworth design review precedes code.
+
+### 2026-10-21 row253 implementation prepared, gate pending
+
+Gander: after Duckworth-0100 design approval with C1-C5, prepared the two host-script socket migrations, fake fixtures, updated retirement docs and 33 unique change checks. Static syntax/diff and source inventory checks pass; behavioral tests have not run. Sage-2191 queues the requested full scope and will send CLEAR. No host, unit or live config changed.
+
+2026-10-22 02:13:30 UTC | Gander row253 C4 committed candidate, gate pending | Sage-2335 explicitly directs committing runnable source and tests before the whole gate. The repair implements the approved after-uid supervisor with separate inner/outer bounds; the static packet is b64aa316a. Current repaired bytes have run no syntax check, test, probe or host experiment. Earlier static syntax results apply only to the old build. Results from 8a8df4171 are historical and do not carry. Duckworth static verdict and Sage CLEAR precede all gate execution. F5 is row276 / #1781 in DEFERRED.md.
@@ -75,7 +75,8 @@ session's workspace and its own process group. Same contract, plus:
 | `MOSAIC_POLICY_FILE`, `MOSAIC_TOOLS_FILE` | The bundle's gate policy and typed tools. |
 | `MOSAIC_TOOL_SOCKET` | The runner's tool socket, which the typed tools call. |
 | `MOSAIC_TURN_MARKER` | `pi`: the extension writes it at `agent_end`; a pi turn that exits 0 without it failed. |
-| `MOSAIC_EXTENSIONS` | `pi` only: extension files loaded with `-e`; a missing one exits 2. |
+| `MOSAIC_EXTENSIONS` | `pi` only: extension files loaded with `-e`; a missing one exits 2. The pi module names two: the gate and typed tools extension, then the unslop check's `tools/unslop-hook/extension.ts` (row 66). |
+| `MOSAIC_UNSLOP_LOG` | The unslop check's JSONL log, `<run>/unslop.jsonl`, which the runner sets for both adapters and reads after each turn (row 66). |
 | `MOSAIC_CLAUDE_SETTINGS`, `MOSAIC_CLAUDE_MCP_CONFIG` | `claude` only: the bundle's gate hook and MCP server; required. |
 | `MOSAIC_THINKING` | The route's thinking level (row 65), which the harness module's `levels()` already checked. `pi` passes `--thinking` (`off`, `minimal`, `low`, `medium`, `high`, `xhigh`, `max`) and omits it when unset, as for `run-task.sh` workers. `claude` passes `--effort` (`low`, `medium`, `high`, `xhigh`, `max`) and requires it; unset exits 2. |
 | `MOSAIC_CLAUDE_BIN` | `claude` only: absolute path of the CLI to run, from the host's environment (the bus unit pins it). Unset or empty runs `claude` from `PATH`; a relative path or a non-executable file exits 2. |
@@ -86,7 +87,8 @@ The layers each adapter relies on, and what they don't cover, are in
 ### A role's skills (row 64)

 A managed session's skills reach both adapters as text in the bundle's
-`prompt.md`, which they pass with `--system-prompt`. Neither adapter loads a
+`prompt.md`, which they pass as a file: `pi` with `--system-prompt <path>`
+and `claude` with `--system-prompt-file <path>` (row 213). Neither adapter loads a
 skill of its own: `pi` keeps `--no-skills`, since role sessions never get
 `MOSAIC_SKILLS`, and `claude` keeps `--disable-slash-commands` and
 `--restricted`. Sage chose this on 2026-10-19 from a probe, recorded in
@@ -104,5 +106,23 @@ skill of its own: `pi` keeps `--no-skills`, since role sessions never get

 The cost is prompt size: a role's skill text is in every turn, where the
 other routes load a skill when it's used. The bundle caps a role's skills at
-64 KiB together, since `claude` passes `prompt.md` as one argument and Linux
-caps one argument at 128 KiB.
+64 KiB together. The cap dates from when `claude` passed `prompt.md` as one
+argument, which Linux caps at 128 KiB; row 213 passes the file instead, so no
+local user reads the prompt in `/proc/<pid>/cmdline`. Pi 0.85.1 uses the path
+string itself as the prompt when the file is missing or can't be read, so the
+pi adapter exits 2 unless the path is a readable regular file.
+
+### The unslop check (row 66)
+
+Both adapters run the mechanical writing check from `tools/unslop-hook`,
+driven by one `lists.json`. `pi` loads it as its second `-e` extension.
+`claude` runs `claude-hook.js` from the bundle's `settings.json`: the Stop
+hook checks the turn's replies, and the UserPromptSubmit hook adds the
+correction notice as context on the next turn when the last reply had
+tells. Each hook command ends `; exit 0`, so neither blocks. Both log to
+`MOSAIC_UNSLOP_LOG`, and the runner adds a note for the operator to the
+next RESULT it sends (`packages/harness/README.md`, the runner). The
+harness modules mount the three files read-only at their own paths, and
+the manifest records their digests. `MOSAIC_UNSLOP_HOOK` and `UNSLOP_LISTS`
+aren't in the session environment's allowlist, so a managed session can't
+switch the check off or swap its lists.
@@ -27,6 +27,11 @@ need MOSAIC_CLAUDE_MCP_CONFIG
 for f in "$MOSAIC_SYSTEM_PROMPT_FILE" "$MOSAIC_CLAUDE_SETTINGS" "$MOSAIC_CLAUDE_MCP_CONFIG"; do
    [ -r "$f" ] || { echo "claude adapter: not readable: $f" >&2; exit 2; }
 done
+PROMPT_FILE=$MOSAIC_SYSTEM_PROMPT_FILE
+case "$PROMPT_FILE" in
+    /*) ;;
+    *) PROMPT_FILE="$(pwd)/$PROMPT_FILE" ;;
+esac
 [ "${MOSAIC_INTERACTIVE:-}" != "1" ] || { echo "claude adapter: interactive mode isn't supported" >&2; exit 2; }
 CLAUDE=claude
 if [ -n "${MOSAIC_CLAUDE_BIN:-}" ]; then
@@ -56,7 +61,10 @@ fi
 # Flags:
 #   -p                       one-shot: print the answer and exit
 #   --output-format text     stdout is the answer only
-#   --system-prompt          the generated prompt replaces the default
+#   --system-prompt-file     the generated prompt replaces the default, given
+#                            as a file so no local user reads it in
+#                            /proc/<pid>/cmdline (row 213); absolute, since
+#                            the cd above changed the working directory
 #   --effort                 the instance's thinking var (row 65; 2.1.302 takes
 #                            low, medium, high, xhigh, max)
 #   --restricted             no user/project/local settings files; --settings
@@ -76,10 +84,9 @@ fi
 #                            text in the system prompt (row 64)
 ALLOWED=mcp__mosaic
 [ -z "${MOSAIC_TOOLS:-}" ] || ALLOWED="$MOSAIC_TOOLS,mcp__mosaic"
-PROMPT_CONTENT="$(cat "$MOSAIC_SYSTEM_PROMPT_FILE")"
 "$CLAUDE" -p "$MOSAIC_REQUEST" \
    --output-format text \
-    --system-prompt "$PROMPT_CONTENT" \
+    --system-prompt-file "$PROMPT_FILE" \
    --model "$MOSAIC_MODEL" \
    --effort "$MOSAIC_THINKING" \
    --restricted \
@@ -8,7 +8,17 @@
 set -eu

 [ -n "${MOSAIC_SYSTEM_PROMPT_FILE:-}" ] || { echo "pi adapter: MOSAIC_SYSTEM_PROMPT_FILE is required" >&2; exit 2; }
-[ -r "$MOSAIC_SYSTEM_PROMPT_FILE" ] || { echo "pi adapter: system prompt not readable: $MOSAIC_SYSTEM_PROMPT_FILE" >&2; exit 2; }
+# Row 213 (C2-08): pi gets the prompt as a path, so no local user reads it in /proc/<pid>/cmdline.
+# Pi 0.85.1 reads --system-prompt as a file only when the path exists and reads, and otherwise
+# uses the path string itself as the prompt, without a warning for a missing file
+# (dist/core/resource-loader.js resolvePromptInput). So the path must be a regular readable
+# file here, and is made absolute before the cd below, since pi resolves it from its own cwd.
+PROMPT_FILE=$MOSAIC_SYSTEM_PROMPT_FILE
+case "$PROMPT_FILE" in
+    /*) ;;
+    *) PROMPT_FILE="$(pwd)/$PROMPT_FILE" ;;
+esac
+[ -f "$PROMPT_FILE" ] && [ -r "$PROMPT_FILE" ] || { echo "pi adapter: system prompt not readable: $MOSAIC_SYSTEM_PROMPT_FILE" >&2; exit 2; }
 # MOSAIC_AGENT_NAME is optional in headless mode (identity section is then
 # omitted); interactive launches always set it via scripts/agent.sh.

@@ -94,7 +104,8 @@ fi
 # All flags documented in the pi package README (CLI Reference):
 #   -p/--print     one-shot mode: print the response and exit (omitted in
 #                  interactive TUI mode)
-#   --system-prompt  replace the default prompt with the generated one
+#   --system-prompt  replace the default prompt with the generated one, given
+#                  as the file's absolute path (checked above), never its text
 #   --no-*         no ambient context/skills/extensions/templates/themes
 #   EXT_FLAGS      the explicitly provided extensions only (-e)
 #   SESSION_FLAGS  ephemeral | persistent | forked (per env)
@@ -103,7 +114,6 @@ fi
 #   --offline      no startup network operations (update checks/telemetry)
 #   --no-approve   ignore project-local .pi/ files (settings, SYSTEM.md)
 #                  whatever trust is saved for the workspace
-PROMPT_CONTENT="$(cat "$MOSAIC_SYSTEM_PROMPT_FILE")"
 set -- \
    --offline \
    --no-approve \
@@ -118,7 +128,7 @@ set -- \
    --provider "$PI_PROVIDER" \
    --model "$PI_MODEL" \
    $THINKING_FLAG \
-    --system-prompt "$PROMPT_CONTENT"
+    --system-prompt "$PROMPT_FILE"
 # One-shot mode appends -p and the request (both safely quoted);
 # interactive mode appends nothing - clean TUI.
 [ "$INTERACTIVE" = "1" ] || set -- "$@" -p "$MOSAIC_REQUEST"
@@ -16,6 +16,17 @@ not fleet seats. Keep changes in `/mnt/storage/src/mosaic-stack`; do not modify
 | Rocko | General development, investigation, testing, and review | T3 session (Codex, gpt-6.1-sol, thread d99326cc, lead decision 122; Claude thread b84bb264 retired 2026-10-12); launcher Claude Code, Sonnet model | `agents/rocko/launch.sh` |
 | Filbert | General development, investigation, testing, and review | T3 session (Claude, Opus 5.5, thread 048f3c63, non-sandbox reviews only, lead decisions 130 and 134; Codex threads f712d8af and 50342f6a retired 2026-10-13, Claude thread 9cb9731e retired 2026-10-12); launcher Pi, `openai-codex/gpt-6-astra:low`, not to be used under R26 until it changes (lead decision 69) | `agents/filbert/launch.sh` |
 | Researcher | Source-grounded technical research and evidence | T3 session (Claude, Sonnet 5.5, thread 9bac0794, rows 97 and 98, lead decision 124); Haiku rows (71, 80, 84, 88, later 96) run as subagents Sage dispatches with model haiku, effort high and a worktree (lead decision 129); Haiku thread c98aaf4a retired 2026-10-13 unused; launcher Pi, configured Mosaic model | `agents/researcher/launch.sh` |
+| Launchpad | Builder, MVP T1 row 192 (Q175 SSO phase 1) | T3 session (Claude, Opus 5.5), started by Sage under mos-0974/0977 | none, T3 only |
+| Morgana | Builder, MVP T1 row 193 (human users and RBAC) | T3 session (Claude, Opus 5.5), started by Sage under mos-0974/0977 | none, T3 only |
+| Honker | Builder, MVP T1 row 194 (agent lifecycle) | T3 session (Claude, Opus 5.5), started by Sage under mos-0974/0977 | none, T3 only |
+| Gander | Builder, the human boundary across uids (P19 333, #1694) | T3 session (Codex, gpt-6.1-sol), started by Sage under mos-0977 | none, T3 only |
+| Herb | Builder, a second gate lane (#1695) | T3 session (Codex, gpt-6.1-sol), started by Sage under mos-0977 | none, T3 only |
+| Bushroot | Builder, retire the control board writer on 7331 (#1696) | T3 session (Claude, claude-haiku-5-5), started by Sage under mos-1008 | none, T3 only |
+| Megavolt | Builder, MVP T1 item 6 (agent credentials and git identity, #1697) | T3 session (Claude, Opus 5.5), started by Sage under mos-0974/0977 | none, T3 only |
+| Quackerjack | Builder, federation R5 and R2 (#414) | T3 session (Claude, claude-haiku-5-5), started by Sage under mos-1023 | none, T3 only |
+| Gizmoduck | Federation design (#414) and builder of FED R1 | T3 session (Claude, Opus 5.5, thread 9312a896) | none, T3 only |
+| Webby | Reviewer: Case 2 designs, rows 192 and 194 | T3 session (Claude, Opus 5.5, thread 03086006), started by Mos (mos-0981) | none, T3 only |
+| Duckworth | Reviewer: federation designs, row 193 | T3 session (Claude, Opus 5.5, thread ffceafec), started by Mos (mos-0977) | none, T3 only |
 | Sage | Project lead: coordination, review, integration; earlier DYOR strategy records retained | T3 session (Claude Code); Pi launcher `zai/glm-5.3:high` retained | `agents/sage/launch.sh` |

 Each script supports `--check` and `--fresh`. Normal launches resume the agent's
@@ -0,0 +1,8 @@
+# Bushroot
+
+Builder seat, Claude Haiku 5.5, started by Sage under mos-1008 item 2 (a low-level model under Q177) for the row
+that retires the control board writer on 7331 (#1696).
+
+No launcher in this directory. The seat runs as a T3 thread and works in its own worktree. It has no
+credentials of its own; until the credentials row settles per-agent identity, it pushes only its own `bushroot/*`
+branches through the repository credential helper (mos-0981), never `refactor`, `main` or another seat's branch.
@@ -0,0 +1,161 @@
+# Row 195 build: `scripts/case1-accept.sh`
+
+Row 195 (#1693), the Case 1 install on 10.1.1.53. Design r7 at 5425ea2f3, approved by Duckworth
+(duckworth-0087, `agents/duckworth/work/row195/REVIEW-r7.md` at 58d930f89; Gitea 29962). Sage's go to build
+is sage-1817.
+
+## What this commit holds
+
+- `scripts/case1-accept.sh` (new, 100755): section 5's acceptance, F1-F11 and P1-P11.
+- `packages/cli/tests/case1-accept.test.mjs` (new): section 5's cases.
+- `docs/TOOLS.md`: the `case1-accept.sh` entry after the hostcheck entry.
+- This file.
+- `DESIGN.md`, doc-only fixes Sage named in sage-1817, with no new design round:
+  - Duckworth's N1. Section 1's human-id row cited `broker.mjs:245`; the check is `broker.mjs:321`.
+  - Row 226's state at :21 and :326. It said "unclaimed"; 226 is assigned to Gosalyn, briefed and not
+    started (sage-1814).
+  - :340 said I'd send the section 6 items to Gosalyn once 226 was claimed. I sent them on 2026-10-21
+    and Gosalyn acknowledged (gosalyn-0085), so the line now says that.
+
+Nothing else changes. No `case2-*.sh`, `stack-upgrade.sh`, `stack-release.sh`, `case1-hostcheck.sh` or run
+sheet edit, and nothing touches .53 (sage-1809).
+
+## Deviations from section 5, and choices it left open
+
+1. P4's mark is the single token `accepted Q182+Q183`. Section 5 lists `accepted Q182` and `accepted
+   Q183` as marks and gives P4 both. One line can carry one mark, and P4 is the only Q182 path, so the
+   count list has `accepted Q182+Q183` in place of `accepted Q182`.
+2. The test seam replaces `getent`. Under `--root`, the script reads `DIR/etc/passwd` and `DIR/etc/group`
+   with awk. Without it, the same helper calls `getent`. The groups of a user are its primary gid, then
+   each group whose member list names it, which is what `id -G` prints. So there is no fake `id`, and
+   the script never calls `id` for another user.
+3. P10 reads the port floor from `/proc/sys/net/ipv4/ip_unprivileged_port_start` rather than calling
+   `sysctl`, so the seam covers it the way hostcheck's item 7 is covered. There is no fake `sysctl`.
+4. There is no fake `bwrap`, `claude`, `node` or `hostcheck.sh` on PATH. The script runs each by the
+   absolute path the args file or the install names, so the test puts stubs at those paths under
+   `--root`, and the fake `sudo` runs the stack's user's commands from the tree.
+5. The args file must say `--profile factory` and name `--business`. Both are new refusals beyond
+   `stack-upgrade.sh`'s rules. A library file, or one for another business, would make F4 and F7
+   check the wrong thing. After `--`, `--port` and `--tester-port` must be numeric. The args file is the
+   only source of the ports.
+6. F8, F9 and F11 read file metadata as root: `stat`, `-L` and `find -maxdepth 1 -name '*.json'`. None
+   opens the credential. F9 parses `managed-settings.json` with the pinned node, run by root: that node
+   and that file are both root's own, installed by ops-01.
+7. F7 reads `launch.by` from `$HOME/.config/mosaic-dev/businesses/<id>.json` as the stack's user. That
+   path is `businessFilePath(id)` under the default config, which is what the unit uses. It doesn't load
+   the copy's `business.mjs` as `stack-release.sh`'s `plugins launchby` does. The user runs the whole
+   check and prints one line, and root accepts only `ok <instance> run <run>` (sage-1653: root doesn't
+   parse the user's output beyond a fixed pattern).
+8. F5 names a process claude when its argv0's basename or its `comm` starts with `claude`. The window
+   confirms this against a real role session. If the bwrap'd claude shows another name, F5 fails closed
+   and the fix is this match, not the label check.
+9. F3 and F5 run together. `talk` goes out in the background under `timeout 330`, and the `/proc` scan
+   repeats every half second until it finds a labelled pair or `talk` exits. F3's line prints first, then
+   F4, then F5, so the output keeps id order. F3 passes on exit 0 with the `sent` line and a reply line,
+   both counted on stdout only (`cli.mjs:395` and the `formatMessage` write); talk's error goes to stderr.
+12. `--claude` must match `^/[A-Za-z0-9/._+@-]+$`. The `@` is for `node_modules/@anthropic-ai/...`;
+    `stack-upgrade.sh` doesn't check `--claude` at all.
+10. F1 requires all four uids in `/proc/<MainPID>/status` (real, effective, saved, filesystem) to be the
+    user's.
+11. Evidence text the stack's user controls (talk's last line, the precheck's last line, F6's and F10's
+    `--version`) is cut to printable ASCII, one line, 200 bytes.
+
+## Tests
+
+`packages/cli/tests/case1-accept.test.mjs`, 22 tests. Every case builds a scratch host with every F check
+passing and every P check closed or accepted, then changes one thing:
+- all pass: exit 0, ids in order, each P mark, the count lines match the check lines, and the stand-in
+  credential's value appears nowhere;
+- each F check failing alone exits 1 with only its line failing;
+- F3 on exit 0 with only the `sent` line, and its evidence taking talk's stderr;
+- F1 on a failed unit and on `User=root`; F2 on healthz failing and on another pid holding the port;
+- F5 on `unpriv_bwrap (enforce)`, `bwrap//&unpriv_bwrap (complain)`, a trailing space on either label,
+  no bwrap of the user's, and passing on `comm` alone;
+- F6 on a stub that prints nothing and on a path outside `claude-<pin>`;
+- F7 on two live PM launches, a live one for another business, and no `launch.by`;
+- F8 on 0640, on another owner and on a symlink, never printing the credential;
+- F9 on a group-writable mode, another owner and a number for the flag;
+- F11 on one `*.json` under `discord/`, and passing on an empty directory;
+- each P check's unnamed mark, with the line count each fault makes: P6 one line per member, P9 one per
+  missing item; P2, P5, P10 and P11 in more than one way;
+- every P check unnamed at once still exits 0;
+- nine bad args files refuse with exit 2 before any command runs, each with its own refusal text;
+- usage errors, and a user's run without `--root`, exit 2;
+- every in-instance call goes through `sudo -u mosaic -H env PATH=<node dir>:/usr/local/bin:/usr/bin:/bin`,
+  read from the fake `sudo`'s argv, and root's other `sudo` calls are exactly `-l -U mosaic`,
+  `-l -U localadmin` and the jarvis bwrap probe;
+- the host check records `--check` and never `--enforce`.
+
+## Mutants
+
+Section 5's twelve, each one exact replacement in `scripts/case1-accept.sh`, run by
+`/mnt/storage/scratch/darkwing-195-out/mutants.py` in Sage's slot (sage-1865). All twelve were killed.
+After each one the script's bytes were restored, and the final sha256 matched (`d434f15ff638...`). The
+killers below are the tests that failed in each mutant's saved log.
+
+| # | Mutant | Killed by |
+|---|---|---|
+| 1 | F1 passes on a MainPID owned by root | each F alone |
+| 2 | F2 accepts a listener on 0.0.0.0 | each F alone |
+| 3 | F3 passes without a reply | each F alone; F3 exit 0 with no reply line |
+| 4 | F5 matches a substring | F5 labels (the trailing space) |
+| 5 | F6 skips the `--version` check | each F alone; F6 stub and path |
+| 6 | F8 skips the owner check | F8 0640, owner and symlink |
+| 7 | F11 ignores `discord/` | each F alone; F11 `*.json` |
+| 8 | P1 closes on any output | P unnamed; every P unnamed |
+| 9 | P5 maps to `closed` with jarvis in docker | P unnamed; every P unnamed; P2 and P5 names docker |
+| 10 | P9 drops the jarvis item | P unnamed; P9 per item |
+| 11 | P11 accepts any `Before=` | P unnamed; every P unnamed |
+| 12 | a P check's `unnamed` sets the exit to 1 | P unnamed; every P unnamed; P10 and P11; P2 and P5; P9 per item |
+
+Mutant 1 survived the F1 variants test (a failed unit, `User=root`), because those faults fail F1 on the
+unit's state and `User=`, not on the uid line. Each F alone covers the uid line.
+
+## Pre-slot read review
+
+Since every test run is slot work, a read-only subagent traced each case through the script before the
+first slot run, executing nothing. It found four defects, all fixed in this commit:
+- The `--claude` regex had no `@`, so every run refused the args file, the real .53 one included.
+- The fake `stat` logged the args-file call, so the bad-args test's "no command ran" check would fail.
+- The P5 and P6 faults each rewrote `etc/group` from the constant, so applying both lost P5's change.
+- F3 counted stderr into its line count, so a mutant dropping the exit check survived. F3 now counts
+  stdout only, and a `sent`-only case covers the line count.
+
+## Run environment
+
+The build commit ddf7dce6c sits on base 4ced5e63d (origin/refactor when it was pushed). It was first built
+on c515273db as 4a51d392c. Row 238 then changed `docs/TOOLS.md`, so I cherry-picked the three commits onto
+4ced5e63d as `darkwing/row195-b`. `git range-diff` shows all three identical. node v26.8.1 on dragon-lin,
+every run behind my busy check and Sage's, chained with `&&`.
+
+- Step 1, sage-1829 (07:41:54Z to 07:42:05Z), TMPDIR `/tmp/dw195`:
+  `node --test packages/cli/tests/case1-accept.test.mjs`, 22 pass, 0 fail, 11.0 s.
+- Step 2, sage-1865 (08:34:27Z to 08:36:21Z), TMPDIR `/mnt/storage/scratch/tmp/r195`: the twelve mutants
+  above, all killed.
+- Step 3, the gate (08:36:21Z to 08:47:06Z), same TMPDIR, `COMPOSE_PROJECT_NAME=darkwing-r195`:
+
+| Suite | Result |
+|---|---|
+| packages/cli (`node --test tests/*.test.mjs`) | 662 pass, 0 fail, 0 skipped |
+| test-auth.sh | 15 passed, 0 failed |
+| test-conductor.sh | 17 passed, 0 failed |
+| test-config.sh | 31 passed, 0 failed |
+| test-discord.sh | 78 passed, 0 failed |
+| test-extension-package.sh | 18 passed, 0 failed |
+| test-foundation.sh | 44 passed, 0 failed |
+| test-land-work.sh | 86 passed, 0 failed |
+| test-queue.sh | 156 node pass, 0 fail; 28 passed, 0 failed |
+| test-release.sh | 14 passed, 0 failed |
+| test-task.sh | 98 passed, 0 failed |
+
+Summed: 818 node tests passed with 0 failed, and 429 selftests passed with 0 failed. The compose network
+was removed afterwards, and the sweep found no process left in the worktree, the output directory or the
+TMPDIR. This file's results are a doc-only commit on top of the build, so nothing that ran has changed.
+
+## Correction to deviation 6 (follow-up, 2026-10-21)
+
+Deviation 6 says the node F9 runs is root's own. At 37171f65b the script didn't check that. F9 ran
+`--node` as root before F10's path check, so the header's "root itself only reads" was false
+(Duckworth's N1, `agents/duckworth/work/row195/REVIEW-m1.md` at 6afcee2a5). A host installed as designed
+was safe, because `case2-unit.sh` refused a non-root-owned `--node`. Row 245 carries the fix and its
+tests: `agents/darkwing/work/queue-245/BUILD.md`.
@@ -0,0 +1,388 @@
+# Row 195 design: the Case 1 install on 10.1.1.53 (r7)
+
+Darkwing, 2026-10-21. Brief: `docs/plans/2026-10-20_hub-own-uid.md`, blob 45be7f09afc1, section "Brief: the
+Case 1 install on 10.1.1.53 (row 195)". Gitea #1693. Reviewer Duckworth, gate owner Sage. Branch
+`darkwing/row195-r7` on c515273db. r6 (b7239bb66 on `darkwing/row195`, approved duckworth-0055) is the base,
+carried unchanged as 7398b7dd7. The r6 text is in that commit and in b7239bb66.
+
+## Changes from r6
+
+Q187 (mos-1108) made install and upgrade product commands, and mos-1118 split r6 into the installer rows
+(`docs/plans/2026-10-20_installer-rows.md`). That brief says row 195 "shrinks to the factory profile's
+values and the Case 1 acceptance". So r7 is mostly a cut. What r6 designed now ships elsewhere:
+
+| r6 piece | Now | State |
+|---|---|---|
+| `stack-release.sh --units external`: `confirm`, `revert`, `gate`, `rollback --to`, external `adopt` and `status`; `stack-copy.sh check --units external` and bundle copies | row 232, I1 | landed |
+| `case1-repin.sh` (A1-A5, A2f, R1-R4) | `scripts/stack-upgrade.sh`, row 233, I3 | landed |
+| the host steps 2a, 2a', 2a'' and the window's root steps | `docs/guides/host-run-sheet.md` sections 1-10, row 233 | landed |
+| `case1-hostcheck.sh`, `case1-pins.sh`, `mosaic-hostcheck.service` (the drift stop, r6 B2) | row 240, I4 | landed c515273db |
+| the unit render, `--profile factory`, `--pm`, `--claude`, the factory serve flags, the precheck | row 230, C2-13a, I2 | landed |
+| the install as `mosaic`: bootstrap, business file, copy | row 226, C2-13b, I2, `scripts/case2-install.sh` | assigned to Gosalyn, briefed, not started |
+| `docs/guides/case1-install.md` | the host run sheet, plus section 6 of this file | |
+
+Other changes:
+
+- Claude moves under `/opt` (sage-1522, run sheet section 3). `--claude` is
+  `/opt/mosaic-stack/claude-<pin>/node_modules/@anthropic-ai/claude-code/bin/claude.exe`, root's, and root
+  installs and upgrades it. r6's `/srv/mosaic/.local/bin/claude` is gone. F6 reads the new path.
+- The args file is `/etc/mosaic-stack/dev.args` (run sheet section 7), not `case1-unit.args`. It holds
+  `--copy` too, and `stack-upgrade.sh` rewrites only that line, after confirm passes.
+- Both units are `WantedBy=multi-user.target` and start at boot (Q189, mos-1122). r6's "the Console has no
+  `[Install]`, root starts it by hand after a reboot" no longer holds.
+- The business id is stated, with the DEFERRED 240 N1 reasoning (sage-1809, sage-1813). Section 7.
+- The window can't run until row 226 lands. Sage added 226 to row 195's after list at rev 2718
+  (sage-1813). Section 6 lists what row 195 needs from 226's install.
+- The acceptance runs as root through ops-01, not as `localadmin`. `aa-status`, `sudo -l -U`,
+  `systemd-run --uid` and the hostcheck all need root. It gains four functional checks for items the run
+  sheet marks "precheck line missing" (F8-F11) and one host line (P11). Section 5.
+- The Discord row in section 2 changed. The precheck's "no Discord binding" line is C2-13b's and is
+  library-only, so for the factory it's F11 in the acceptance.
+
+What row 195 still builds: `scripts/case1-accept.sh` and its test (section 5). The rest of this file is
+inputs, the window order and the record the reviewer checks.
+
+## 0. What I checked on the host
+
+Read only, as `localadmin` over ssh, 2026-10-20 between 20:40Z and 21:51Z. Nothing in r7 touched .53
+(sage-1809). The window's first step re-reads these, since they can drift in a day: unattended-upgrades
+runs daily.
+
+| Item | 10.1.1.53 on 2026-10-20 | Needed |
+|---|---|---|
+| OS | Ubuntu 24.04.5, kernel 6.8.0-124, x86_64, 12 cores, 94 GiB, 217 GiB free on `/` | fits |
+| `mosaic` user, group, `/srv/mosaic` | absent | run sheet section 1 |
+| node | `/usr/local/bin/node` v22.22.2, root-owned | 24 or later, under `/opt` (run sheet section 2) |
+| claude | not on localadmin's PATH | under `/opt` (run sheet section 3) |
+| bwrap | absent; apt candidate `bubblewrap 0.9.0-1ubuntu0.3` | run sheet section 4 |
+| user namespaces | `kernel.apparmor_restrict_unprivileged_userns = 1`, apparmor 4.0.1, no bwrap profile loaded | run sheet section 4 |
+| profiles that name bwrap | none (`grep -rlw bwrap /etc/apparmor.d` exits 1) | hostcheck item 3 |
+| `fs.protected_hardlinks` | 1 | hostcheck item 6 |
+| `net.ipv4.ip_unprivileged_port_start` | 1024 | run sheet section 5 |
+| listeners below 1024 | 22 (sshd) and 53 (the resolver); 732 is free | the Console's port |
+| ports 7330-7333 | free | 7333 is the tester port |
+| `localadmin` | NOPASSWD sudo (#423 step 1, mos-1066, mos-1077) | ops-01's root path |
+| `jarvis` | groups sudo, docker, lxd, adm | #423 step 4 removes them (P5) |
+| unattended-upgrades | on, with the security pocket, which carries bubblewrap | the drift stop (row 240) |
+| journald | `SplitMode=uid` | the PM check reads `launches list`, not the journal (row 232) |
+
+## 1. The factory profile's values
+
+Instance `dev`, row 190's default (mos-1118 choice 4). `~` is `mosaic`'s home.
+
+| Input | Value | Who gives it |
+|---|---|---|
+| user | `mosaic`, primary group `mosaic` with no other member | fixed |
+| home | `/srv/mosaic`, 0700 | fixed |
+| config dir | `/srv/mosaic/.config/mosaic-dev` | row 190 |
+| data root | `/srv/mosaic/.mosaic-dev`, marker `{"instanceVersion":1,"name":"dev"}` | row 190 |
+| business | `mosaic-stack`, file `<configDir>/businesses/mosaic-stack.json` | fixed (section 7) |
+| profile | `factory` for `case2-install.sh`, `case2-unit.sh` and `case2-precheck.sh` | fixed |
+| roles | the factory set from `roles/`, with a chief that has a harness var | the go names the set (section 2) |
+| human id | Jason's, not `tester` (`broker.mjs:321`) | the go |
+| model credential | `<configDir>/secrets/claude-session.env`, `mosaic` 0600, one line `CLAUDE_CODE_OAUTH_TOKEN=...` | Jason places it (section 3) |
+| token slot path | none | section 2 |
+| node | `/opt/mosaic-stack/node-<v>/bin/node`, `<v>` 24 or later | the go names `<v>` and its sha256 |
+| claude | `/opt/mosaic-stack/claude-<pin>/node_modules/@anthropic-ai/claude-code/bin/claude.exe`, `<pin>` 2.1.304 unless the go names a newer one | the go |
+| PM | on (`--pm`) | fixed |
+| Console | `--port 732` on 127.0.0.1, with the unit's `CAP_NET_BIND_SERVICE` | fixed |
+| tester | `--tester-port 7333` on 127.0.0.1 (P10) | fixed |
+| board | none | fixed |
+| release | a git bundle of `refs/heads/refactor` and the 40-hex commit (run sheet section 6) | the go names both and the bundle's sha256 |
+
+The args file. `/etc/mosaic-stack/dev.args`, `root:root` 0644, one argument per line (run sheet section 7):
+
+```
+--profile
+factory
+--user
+mosaic
+--home
+/srv/mosaic
+--business
+mosaic-stack
+--copy
+<40-hex commit>
+--node
+/opt/mosaic-stack/node-<v>/bin/node
+--claude
+/opt/mosaic-stack/claude-<pin>/node_modules/@anthropic-ai/claude-code/bin/claude.exe
+--pm
+--
+--port
+732
+--business
+mosaic-stack
+--tester-port
+7333
+```
+
+`case2-unit.sh` takes exactly these before `--` (`scripts/case2-unit.sh:54`), and `stack-upgrade.sh`
+refuses `args-unreadable` on anything else (`scripts/stack-upgrade.sh:126-148`). The factory profile
+refuses the preview trio, `--send` and the proof pair (`case2-unit.sh:169`). .53 has no proxy, and Jason
+reaches the Console with `ssh -L` (sage-1451 Q3). Changing a serve flag is a re-install with its own go,
+not an upgrade.
+
+Why the port is 732 (r6, mos-1101 item 5). Role sessions share the host's network namespace
+(`packages/seat/src/sandbox.mjs:67`), so while the Console is down a session could bind a port above the
+floor and answer in its place. Below 1024 only the Console unit can bind, through its capability. The
+tester port can't go below 1024 (`packages/webui/src/cli.mjs:33`), so P10 records it.
+
+PATH for `mosaic`'s steps. `sudo -u mosaic -H` resets PATH to sudo's `secure_path`, which finds
+`/usr/local/bin/node`, v22. So every `mosaic` step runs as
+`sudo -u mosaic -H env PATH=/opt/mosaic-stack/node-<v>/bin:/usr/local/bin:/usr/bin:/bin ...`, the list
+`case2-unit.sh` renders as the units' PATH. `stack-upgrade.sh` builds it from the args file's `--node`.
+
+## 2. Where Case 1 differs from Case 2
+
+| Case 2 (library) | Case 1 (factory) | Reason |
+|---|---|---|
+| business file with the library mapping | `mosaic-stack` with no `library` key. The precheck refuses a library project under `factory` (`profile-library-business`, `case2-precheck.sh:127-128`) | the factory has no books repo |
+| `bean`, `chet`, persona vars and files, specialists | the factory roles from `roles/`, with a chief that has a harness var | the go names the set. I haven't read Jason's live business file and won't. The acceptance needs only the chief (F3); a chief with no harness var answers `no-route`. The human adds roles later with `instances.set`, no new row |
+| token slot `library-gitea` | none | the factory's per-agent git identity is row 199's credential store (Megavolt, #1697). Until it lands, git work stays on dragon-lin (Q182) |
+| `bus.tester` off | on; the precheck refuses it off under `factory` (`case2-precheck.sh:135`) | the acceptance and the Q173 test system need the tester |
+| persona modes and digests, `library.sync`, `library.status` | skipped | no persona files, no library (C2-13b brief, `factory` profile) |
+| `ZAI_API_KEY` in `claude-session.env` | not checked; the file holds `CLAUDE_CODE_OAUTH_TOKEN` | no instance has provider `zai` (run sheet section 9) |
+| no Discord binding (C2-13b, library only) | none either. F11 checks that `<dataRoot>/discord/` holds no binding | the factory's connector stays on dragon-lin. Two connectors on one bot token would split its events |
+| the claude marker prompt | runs, since the chief's harness is claude-code | |
+| serve flags: preview trio, `--send`, proof pair | `--port 732`, `--business mosaic-stack`, `--tester-port 7333` | no proxy on .53 |
+| bus: no `--pm`, no `MOSAIC_CLAUDE_BIN` | `--pm`, and `Environment=MOSAIC_CLAUDE_BIN=<--claude>` | the PM dispatches the factory's work; without the path the bus finds no claude on the unit's PATH |
+| Console proof file (run sheet section 9, .54) | none | no proof pair |
+
+All of these are inputs to the landed scripts. Row 230 implemented the four factory items r6 asked for
+(serve flags, `--pm`, `--claude`, row 190's tokens), and nothing in them hardcodes a Case 1 value.
+
+## 3. Model access
+
+Q185: Case 1 uses the account the factory uses today, the Claude subscription behind dragon-lin's
+`claude-session.env`. No script copies that file and none reads its value. In the window, Jason, or the
+person he names under the Q173 secrets rule, makes a credential for .53 from that account and writes it
+to `/srv/mosaic/.config/mosaic-dev/secrets/claude-session.env` as `mosaic`, mode 0600 (run sheet
+section 9). Nobody prints it. The check is `stat -c '%U %a %F' PATH` only (F8).
+
+The bus unit reads it through `EnvironmentFile=-` (`case2-unit.sh:243`). The leading `-` means a missing
+file doesn't stop the bus, so the chief's first launch would fail instead. The window places the file
+before the units start (section 6, W9), and the precheck's claude marker prompt then proves it works
+without printing it.
+
+Quota: the factory on dragon-lin and on .53 share one subscription. Q185's "use existing" accepts that.
+The pi harness stays off on .53 until P19 #383 settles (mos-0865). The business file names claude only.
+
+## 4. Upgrade, rollback and backup on .53
+
+All three are `scripts/stack-upgrade.sh` (row 233), run as root by ops-01 from `/root/mosaic-stack` at the
+reviewed commit. Usage, exits and the step log are in `docs/TOOLS.md`, "Root's upgrade driver", and run
+sheet section 6.
+
+| Action | Command | Who | Go |
+|---|---|---|---|
+| upgrade | `stack-upgrade.sh upgrade --instance dev --bundle /srv/mosaic/incoming/<sha>.bundle --sha <sha>` after run sheet section 6's per-upgrade lines | ops-01 | Mos per run; `--migrate` also needs Jason present (decision 96) |
+| rollback | `stack-upgrade.sh rollback --instance dev --to <copy> [--restore <ACT> [--events N]]` | ops-01 | Mos per run. Mos or Sage picks `<copy>` from `stack-release.sh status mosaic-stack --units external`, read as `mosaic`. The plan refuses unless it is the previous distinct copy |
+| backup of the store | A3's `backup_store` into `<dataRoot>/backups/stack/<ACT>`, inside every upgrade | the driver | the upgrade's |
+| rehearsal | `stack-release.sh rehearse` against the log's newest backup, before anything stops, on `--rehearse-port`, default 7339, which section 0 found free | the driver | the upgrade's |
+| backup of the VM | a PBS backup of VM 1008 before the install window and before any `--migrate` | ops-01 | the window's go (Q182, Q183: agents keep PBS) |
+
+Three .53 specifics:
+
+1. The first upgrade after install needs `--no-rehearsal` in its go. The install's adopt takes no backup,
+   so the log records none, the rehearsal exits 3 (`no-backup`), and the driver goes on only with the
+   flag (`stack-upgrade.sh:323-324`). Every later upgrade refuses the flag (`rehearsal-required`).
+2. Exit 5 (`args-failed`): the new stack is live and confirmed, but `dev.args` still names the old copy.
+   ops-01 moves the file the result line names into place with `mv -f`, and nothing else (run sheet
+   section 6).
+3. Exit 2 leaves both units stopped and the activation open. ops-01 sends Mos the exit and the last
+   lines of `/var/log/mosaic-stack/upgrade-dev.log`, and Jason or Mos settles it with `confirm` or `revert`
+   as on dragon-lin. A unit that doesn't stop within `--timeout` ends here on purpose (A2f's
+   `stale-start`, duckworth-0055 N1, now in run sheet section 6).
+
+The store backup doesn't hold the config dir or the credential. PBS backups of VM 1008 hold the whole disk,
+the credential included (P4). A restore swaps only the store and leaves `claude-session.env` in place.
+
+Re-install, for a serve flag or role change, is not an upgrade. It needs its own go and runs: stop the
+Console, then the bus; rewrite `dev.args` with the same `--copy`; `case2-unit.sh` with it; both units start
+again from the render. Row 230 N1 (webby-0046) holds here: a re-render with the units running leaves each on
+its old copy, so ops-01 stops both first. `stack-upgrade.sh` already stops both before it renders.
+
+## 5. Acceptance: `scripts/case1-accept.sh`
+
+New in this row. ops-01 runs it as root on .53, from `/root/mosaic-stack`:
+
+```
+case1-accept.sh --business mosaic-stack --args /etc/mosaic-stack/dev.args --claude-pin <pin> --node-pin <v>
+```
+
+It reads the user, home, node, claude and ports from the args file and refuses (exit 2) when that file
+fails `stack-upgrade.sh`'s rules. Every check inside the instance runs as
+`sudo -u mosaic -H env PATH=<node dir>:/usr/local/bin:/usr/bin:/bin`. It changes nothing on the host
+except what F3's message writes to the store. It prints one line per check, `<id> <path> <mark>
+<evidence>`, then a count of each mark. Marks: `closed`, `accepted Q182`, `accepted Q183`, `accepted
+mos-1096`, `accepted mos-1101`, and `unnamed`, which means "not named in Q182, Q183 or a Mos ruling".
+It exits 1 when any F check fails and 0 otherwise. A P check never changes the exit. Each `unnamed`
+line goes to Mos, who takes it to Jason (R8 N1). Duckworth reads the whole output.
+
+It prints no value from `claude-session.env` and never opens it.
+
+Functional checks. Any failure fails the row:
+
+| Id | Check | How |
+|---|---|---|
+| F1 | the units run as `mosaic` | for `[email protected]` and `mosaic-webui.service`: active, `User=mosaic`, and the uid in `/proc/<MainPID>/status` is `mosaic`'s |
+| F2 | the Console answers on 127.0.0.1:732 only | `curl -fsS http://127.0.0.1:732/healthz` succeeds, and `ss -Hltnp` shows 732 bound to 127.0.0.1 only, by the Console's MainPID. Jason reaches it with `ssh -L 7332:127.0.0.1:732 [email protected]`. A LAN listener waits for Q175 SSO (sage-1451 Q3) |
+| F3 | one tester message gets a reply | as `mosaic`: `mosaic talk chief <marker> --business mosaic-stack --tester --wait 300`. A stored reply to the marked message passes. The inbox shows decisions only, so it isn't used |
+| F4 | the precheck passes | `case2-precheck.sh --business mosaic-stack --profile factory` as `mosaic` exits 0 |
+| F5 | a role session runs under bwrap with the profile | while F3's reply is pending: a `/usr/bin/bwrap` process owned by `mosaic` has a claude child. Its `/proc/<pid>/attr/current` equals `bwrap (enforce)` and the child's equals `bwrap//&unpriv_bwrap (enforce)`, exact strings after the trailing newline is cut |
+| F6 | claude is the pin | the args file's `--claude` path sits under `/opt/mosaic-stack/claude-<pin>/`, and its `--version` as `mosaic` prints `<pin> (Claude Code)` |
+| F7 | the PM run is live | `launches list --json` as `mosaic` has exactly one live entry for the PM's instance (`launch.by`), the check `confirm` runs |
+| F8 | the credential's file | `stat -c '%U %a %F'` on `claude-session.env` reads `mosaic 600 regular file`, and it isn't a symlink. Run sheet section 9 marks this "precheck line missing" |
+| F9 | the autoupdater is off | `/etc/claude-code/managed-settings.json` is `root:root` 0644 and its `env.DISABLE_AUTOUPDATER` is `"1"`. Run sheet section 3 marks this "precheck line missing" |
+| F10 | node is the pin | the args file's `--node` is `/opt/mosaic-stack/node-<v>/bin/node` with `<v>` the `--node-pin`, and its `--version` prints `<v>`. Run sheet section 2 marks this "precheck line missing" |
+| F11 | no Discord binding | `/srv/mosaic/.mosaic-dev/discord/` is absent or holds no `*.json` (section 2) |
+
+Host paths. These report and never fail the row:
+
+| Id | Path | Mark | Evidence |
+|---|---|---|---|
+| P1 | `mosaic` has sudo | closed only when `sudo -l -U mosaic` prints "is not allowed to run sudo"; any other output is unnamed | the `sudo -l` result |
+| P2 | `mosaic` has supplementary groups or a key | closed when `id -G mosaic` is one entry and `~mosaic/.ssh/authorized_keys` is absent or empty | `id`, file state |
+| P3 | `localadmin` NOPASSWD sudo, reached with the dragon-lin key | accepted Q183 | `sudo -l -U localadmin` |
+| P4 | root on pve over VM 1008, and PBS backups that hold `/srv/mosaic` with the credential | accepted Q182 and Q183 | a fixed line; the script can't see pve |
+| P5 | `jarvis`, which runs Hermes, reaches `/srv/mosaic` through sudo, docker or lxd | closed when `jarvis` is in none of the three; unnamed otherwise. #423 step 4 removes all four groups before the install (mos-1091 4c) | `id jarvis` |
+| P6 | other members of sudo, docker, lxd | closed when sudo holds only `localadmin` and docker and lxd are empty; each other member is its own unnamed line | `getent group` lines |
+| P7 | a file under `/etc/sudoers.d` naming `mosaic` | closed when none | file names |
+| P8 | the Console or tester reachable from the LAN | closed when 732 and 7333 are bound to 127.0.0.1 only, each by the Console's MainPID, and nothing listens on 7331 | listener table |
+| P9 | a user namespace through `/usr/bin/bwrap` | accepted mos-1096 only while all eight hold, unnamed otherwise: hostcheck items 1 to 6, read from `/usr/local/lib/mosaic-stack/hostcheck.sh --check`'s own `ok N` lines (item 7 is P10's floor); `sudo -u jarvis /usr/bin/bwrap --version` fails with "Permission denied"; `getent group mosaic` lists no member and no other account has its gid. F5 adds the label of a real role session | the hostcheck lines and each item |
+| P10 | a session binds the tester port 7333 while the Console is down | accepted mos-1101 while the port floor is above 732 and 7333 is held by the Console's MainPID | the floor, the owner pid |
+| P11 | the boot check runs before the bus | closed when `mosaic-hostcheck.service` is enabled and `systemctl show -p Before` on it names `mosaic-bus@<business>.service` for the args file's business; unnamed otherwise (section 7) | the `Before=` value |
+
+P9 reads hostcheck's output, which root's own script prints, by matching `^ok [1-6] ` lines. It runs `--check` only,
+never `--enforce`, so the acceptance can't close bwrap.
+
+Tests, in `packages/cli/tests/case1-accept.test.mjs`. The script takes a test seam, `--root DIR`, for
+`/proc`, `/etc`, `/srv/mosaic` and `getent`, and refuses it when run as root, as the hostcheck does. Fake
+`systemctl`, `curl`, `ss`, `sudo`, `bwrap`, `sysctl`, `stat`, `claude`, `node` and `hostcheck.sh` on PATH.
+Nothing reaches .53 or dragon-lin's live state, and no test reads a real credential. Cases:
+- every check passing exits 0, with the counts matching the lines;
+- each F check failing alone exits 1 with its line;
+- F5 fails on `unpriv_bwrap (enforce)`, `bwrap//&unpriv_bwrap (complain)` and a trailing space;
+- F6 fails on a stub `claude.exe` that prints nothing and on a path outside `claude-<pin>`;
+- F8 fails on mode 0640, on another owner and on a symlink, and the stand-in credential's value never
+  appears in the output;
+- F11 fails on one `*.json` under `discord/`;
+- each P check in each of its marks: P1 with output that grants nothing but lacks the refusal text
+  (unnamed), P9 unnamed once for each item missing, P10 unnamed with the floor at 700 and with 7333 held
+  by another pid, P11 unnamed with `Before=` naming another business;
+- every P check `unnamed` still exits 0;
+- a bad args file refuses with exit 2 before any check;
+- every in-instance call goes through `sudo -u mosaic -H env PATH=<node dir>:...`, read from the fake
+  `sudo`'s recorded argv;
+- the hostcheck fake records `--check` and never `--enforce`.
+
+Mutants, each killed by a named case:
+1. F1 passes on a MainPID owned by root.
+2. F2 accepts a listener on 0.0.0.0.
+3. F3 passes without a reply.
+4. F5 matches a substring.
+5. F6 skips the `--version` check.
+6. F8 skips the owner check.
+7. F11 ignores `discord/`.
+8. P1 closes on any output.
+9. P5 maps to `closed` with `jarvis` in docker.
+10. P9 drops the jarvis item.
+11. P11 accepts any `Before=`.
+12. A P check's `unnamed` sets the exit to 1.
+
+## 6. The .53 window
+
+Nothing in this row touches .53 (sage-1809). Every root step below is ops-01's, over
+`ssh [email protected]` with `sudo`, and waits on a Jason decision (mos-1086). The window needs:
+- row 226 landed;
+- Jason's or Mos's go naming the commit, the bundle's sha256, the node and claude pins, the role set and
+  Jason's human id;
+- a backup first;
+- a STATE report after.
+
+| # | Step | Runs as | Source |
+|---|---|---|---|
+| W0 | re-read section 0's items; stop on any change and report it | `localadmin`, read only | section 0 |
+| W1 | PBS backup of VM 1008 | ops-01 on pve | section 4 |
+| W2 | the stack's user and home | root | run sheet 1 |
+| W3 | node under `/opt` | root | run sheet 2 |
+| W4 | claude under `/opt`, managed settings | root | run sheet 3 |
+| W5 | bubblewrap, the profile, the statoverride, the no-new-privs test, the drift stop; `hostcheck.sh --check` exits 0 with item 7 at 1023 | root | run sheet 4 |
+| W6 | the port floor (read) | root | run sheet 5 |
+| W7 | the bundle, root's checkout at `<sha>`, `mosaic`'s clone | root, then `sudo -u mosaic -H` | run sheet 6 |
+| W8 | `case2-install.sh --profile factory` with section 1's inputs: bootstrap, the business file, roles, human id, the copy | `sudo -u mosaic -H env PATH=...` | row 226 |
+| W9 | place `claude-session.env` | Jason, or who he names | run sheet 9, section 3 |
+| W10 | write `dev.args` (section 1); `case2-unit.sh` from it, which enables both units and starts the bus, then the Console | root | run sheet 7, 10 |
+| W11 | `case2-precheck.sh --business mosaic-stack --profile factory` exits 0; `hostcheck.sh --check` exits 0 with item 7 at 732 | `mosaic`; root | row 230, 240 |
+| W12 | `stack-release.sh adopt mosaic-stack --units external`, unless row 226's install does it | `sudo -u mosaic -H` | row 232 |
+| W13 | `case1-accept.sh` (section 5); the output to Duckworth, then Mos confirms | root | this row |
+| W14 | STATE report to Mos | ops-01 | brief |
+
+Install rollback, any step before W13 passes. Stop and disable both units, remove their files and
+`dev.args`, then the run sheet's rollbacks for sections 4, 3 and 2 in that order. Removing the user and
+home (`userdel -r mosaic`) needs its own Mos go, since it deletes the home. W1's backup covers the rest.
+
+What row 195 needs from row 226. Row 226 is assigned to Gosalyn, briefed and not started, so I'm listing what the window
+needs from its design, not designing it:
+
+1. `--profile factory` writes the business file with `bus.tester` on and no `library` key, and the roles
+   the go names.
+2. It writes no token slot and no persona files (its brief says so).
+3. It runs before the unit render, since the copy must exist for `case2-unit.sh --copy`, and it starts no
+   unit.
+4. Who writes `dev.args`. The C2-13b brief says the install doesn't write unit files, and the run sheet
+   says "I2's install writes it". `mosaic` can't write `/etc/mosaic-stack`. So either root's part of I2
+   writes it, or ops-01 writes it from section 1 at W10. Either works for row 195. The file's content is
+   fixed above.
+5. Whether it runs `adopt`. If it doesn't, W12 does.
+
+I sent these to Gosalyn on 2026-10-21 (gosalyn-0085 acknowledged), and the run sheet takes whichever answer 226 gives.
+
+## 7. The business id
+
+.53's business id is `mosaic-stack` (sage-1813). It appears in:
+- the args file, twice;
+- the bus unit `[email protected]`;
+- the business file name;
+- `case1-accept.sh --business`.
+
+The landed boot unit `packages/cli/systemd/mosaic-hostcheck.service` has
+`[email protected]`. So at boot the drift stop runs before .53's bus, and DEFERRED 240
+N1 (da3051ccc: `After=mosaic-hostcheck.service` in `mosaic-bus.service.in`) doesn't bind this row.
+
+If a go ever names another id for .53, the window stops before W8, and the N1 fix lands first as its own
+reviewed row. P11 is the check on the host. It reads `unnamed` when the boot unit's `Before=` doesn't
+name the installed bus.
+
+DEFERRED 240 N2 (the apt hook goes in before the first `--check`) is a run sheet order note. This row
+doesn't edit the run sheet, so it stays deferred.
+
+## 8. Rulings this design rests on
+
+- sage-1451: Q1 system units; Q3 the Console on 127.0.0.1 with `ssh -L`; Q4 a rebase goes to a new branch
+  name (#426(a), mos-1086).
+- mos-1091, mos-1096, mos-1098, mos-1101: the bwrap path, its profile and P9; the port squat and P10; .53
+  runs the PM. Their r6 sections stand, and rows 232, 233, 240 and 230 implemented them.
+- mos-1108 (Q187) and mos-1118: the installer rows and the scope cut. mos-1122 (Q189): both units start at
+  boot.
+- sage-1522: claude under `/opt`, root-owned.
+- sage-1809: no step on .53, root steps named and left to ops-01, the business id stated.
+- sage-1813: 226 in the after list (rev 2718); the id is `mosaic-stack` and 240 N1 doesn't apply.
+- Q185: the factory's model account. Q173: credentials placed by Jason or his named person.
+
+## 9. Manifest (planned)
+
+- `scripts/case1-accept.sh` (new), mode 100755.
+- `packages/cli/tests/case1-accept.test.mjs` (new). Section 5's cases and mutants.
+- `docs/TOOLS.md`: a `case1-accept.sh` entry with usage, marks and exits, beside the hostcheck entry.
+- `agents/darkwing/work/queue-195/BUILD.md` (new): run environment, the mutant results, deviations.
+- No change to `case2-*.sh`, `stack-upgrade.sh`, `stack-release.sh`, `case1-hostcheck.sh` or the run
+  sheet. Two follow-ups stay out of this row:
+  - row 230 r2 N1. The "still on copy" line reads the id from the unit file. On .53 neither the install
+    nor `stack-upgrade.sh` reaches that line, since both start from stopped units.
+  - DEFERRED 240 N2.
+- No change to `~/.mosaic-dev`, `~/.config/mosaic-dev`, dragon-lin's units or `~/.mosaic`.
+
+Gate: Duckworth approves this design, then the manifest; the cli suite and every `scripts/test-*.sh`
+green on Sage's gate; section 5's twelve mutants killed in a slot Sage grants.
@@ -0,0 +1,287 @@
+# Row 232 (I1): stack-release external units and bundle copies
+
+Brief: `docs/plans/2026-10-20_installer-rows.md` section I1, blob `f35e7e57daee` (commit ad6f0be7a). Gitea
+#1734, Vikunja P19 #432. Owner Darkwing, reviewer Filbert, gate owner Sage. Design input: row 195 DESIGN r6,
+`agents/darkwing/work/queue-195/DESIGN.md` at b7239bb66 (approved in duckworth-0055). Where the brief and
+r6 differ, the brief wins. sage-1561 ruled where the stack user's `stack-release.sh` runs: from its own
+clone of the release bundle, so `check_target`, the plan's commit list and status drift are unchanged and
+nothing adds `safe.directory`.
+
+## Files
+
+Base: cb5fdb064 (row 199's landing, on top of row 200's 9e1085816). Branch `darkwing/row232-r1`. The first
+build, 0af0c73c6 on `darkwing/row232`, sat on 00d4cc1f6 (row 190); row 200 landed first, so this one is
+rebased onto it (see D9 and D10).
+
+- `scripts/stack-release.sh`: `--units user|external`, the `sc` and `jctl` backend, `confirm`, `revert`,
+  `gate --since`, `rollback --to`, `--plan --expect-from`, the external gate (start floor, PM check from
+  `launches list`), `external-pm`, and the `awaiting units:` status line.
+- `scripts/stack-copy.sh`: `check --units external`, `copy --bundle FILE SHA`, `wrapper ID --create`.
+- `packages/cli/tests/stack-release-external.test.mjs` (new, 25 tests).
+- `packages/cli/tests/stack-release-fixture.mjs` (new): the helpers `stack-release.test.mjs` defined, moved
+  so both files share them. See deviation D1.
+- `packages/cli/tests/stack-release.test.mjs`: the helpers leave and one import line comes in. The 74 tests
+  have the same names and the same bodies as on the base.
+- `packages/cli/tests/stack-copy.test.mjs`: three new `row 232:` tests and a wider `node:fs` import.
+- `docs/TOOLS.md`: the stack-copy usage block and three paragraphs, the stack-release usage block, and a new
+  subsection "Root-owned units (`--units external`, row 232)".
+- `packages/cli/README.md`: one paragraph.
+- This file.
+
+The worktree's `node_modules` symlink is not part of the candidate.
+
+## User mode is unchanged
+
+Every `systemctl` call goes through `sc` and every `journalctl` call through `jctl`. Under `user` they
+are `systemctl --user "$@"` and `journalctl --user "$@"`. Under `external`, `sc` allows only `show`,
+`is-active` and `list-units`, and `jctl` returns 1, so an external run can't start, stop, install or read
+the journal even through a path the tests miss.
+
+Two tests hold the brief's "every command line and every byte of output":
+
+- `user mode: every systemctl call carries --user, and activate, rollback and check make the base's
+  calls`. A fixture repo gets the base's two scripts from `git show cb5fdb064:`. The same activate,
+  rollback and `stack-copy.sh check` run from both trees, and the recorded argv (with the fixture root and
+  port replaced by placeholders) must match line for line. Every call carries `--user`.
+- `user mode: a default activate --plan prints the base's bytes`, for four plans.
+
+The base output is produced live from the base blobs, not stored as a fixture file. See deviation D3.
+
+## r6 section 7, test by test
+
+All in `stack-release-external.test.mjs` unless named.
+
+| r6 :742-812 item | Test |
+|---|---|
+| `units-running` (N4), store, log and TAKEN left | `units-running (N4) refuses while a unit is active...`; also checks that `failed` counts as down and that the Console is checked first |
+| activate leaves the pointer, writes `AWAITING-UNITS` and a backup | `activate stages: ...`, which also checks the set's file list, `UNITS.sha256`, no `--user`, no journal call and `status` |
+| `open-activation` with zero, two, the wrong copy, one not open | `confirm and revert refuse open-activation ...` |
+| `confirm` polls: 3 s fails at `--timeout 1`, passes at `--timeout 10` | `confirm polls: bus status good after 3 s fails ...` and `confirm polls to a pass ...` |
+| `stale-start` floor with `started` at .900 | `stale-start: @1792540799 fails ...` and `stale-start is a gate code ...` |
+| `confirm` pass writes pointer, ok, removes marker; timeout writes `FAILED` and exits 1 | the two polling tests |
+| `activation-failed` when `FAILED` exists | `confirm polls: ... FAILED then refuses activation-failed` |
+| lines carry the started op, from, to, activation and backup | `sameAsStarted` in every confirm test, and sequence 7 |
+| `gate` (N2) with and without `--since` | `gate (N2, A2f): ...` and the usage test |
+| `--plan --expect-from` (N5), activate and `rollback --to` | sequence 7 |
+| A3 order: capture-failed, marker-failed, wrapper failure after migrate | `A3 order: ...` and sequence 2 |
+| refusals log no activation; `interrupted` unchanged | `open-activation` test and sequence 5 |
+| PM check: one, none, two, early, not live, other business, other instance; no journal call | `the external PM check reads launches list ...` (modes '', coder, none, twolive, early, dead, other) and `journalCalls` in every external test |
+| `external-pm` | `pm-on and activate --pm-after-harness refuse external-pm` |
+| `revert` restores TAKEN only after a migration | `revert puts the wrapper back and leaves the store ...` and sequences 2 and 8 |
+| `confirm --rollback` per cause, `unrecorded`, `rollback-failed`, mismatch | sequences 1, 2, 3, 5 and 8, and `confirm --rollback refuses rollback-mismatch, and logs rollback-failed ...` |
+| sequences 1-8 | `sequence 1:` to `sequence 8:`, each ending with the `closed` check (one started and one result line, empty `interrupted`, no marker or `FAILED`, a following `--plan` that doesn't refuse `interrupted-run`) |
+| `rollback --to` refuses not-previous; `rollback --restore` finds an external backup | sequence 7, and `confirm --rollback after a --restore swap ...` |
+| `gate` writes nothing | the `gate (N2, A2f)` test and sequence 4 compare the log, the pointer and the state tree |
+| `confirm`, `revert`, `gate`, `--to` refuse without `--units external` | `confirm, revert, gate, --to and --expect-from need --units external ...` |
+| default path: every call carries `--user`; default `--plan` bytes | the two user-mode tests above |
+
+The brief's additions, in `stack-copy.test.mjs`:
+
+- `row 232: copy --bundle copies a SHA the bundle's refactor reaches, byte-identical to copy SHA, and
+  refuses the rest`: a short SHA, a missing file, a symlink, a bundle that fails `git bundle verify`, a
+  bundle with no `refs/heads/refactor`, a SHA not in the bundle, and a SHA the bundle carries on another
+  branch that refactor doesn't reach. The bundle copy's tree matches `copy SHA`'s byte for byte, and the
+  `release:` and `bundle sha256:` lines are checked.
+- `row 232: wrapper --create writes the first wrapper only, the same bytes wrapper ID writes, and refuses
+  over any file`, a symlink included. Without `--create` a missing wrapper still refuses.
+- `row 232: check --units external reads the system units, the default reads the user units`.
+
+## Mutants
+
+`mutants.sh` in my scratch (not committed, it edits the worktree), 17 mutants: r6's re-pin list (:817-838)
+minus the three `case1-repin.sh` ones, plus the brief's two. Each one applies exact replacements after a
+checked backup, runs `bash -n`, runs its named killers, restores the file and checks its sha256. Two
+controls run first with no change: the whole external file, and stack-copy's `row 232:` tests.
+
+| Mutant | Killers |
+|---|---|
+| m01 `confirm` writes the pointer on a gate failure | `confirm polls: bus status` |
+| m02 `gate_once` in place of `gate` | `confirm polls to a pass`, `stale-start is a gate code` |
+| m03 PM check counts any instance | `external PM check` |
+| m04 PM check drops the `startedAt` bound | `external PM check` |
+| m05 `confirm` takes the newest `AWAITING-UNITS` | `open-activation` |
+| m06 `rollback --to` skips the comparison | `sequence 7:` |
+| m07 the default path drops `--user` from one call (`is-active`) | `user mode: every systemctl` |
+| m08 the timeout writes r4's interim `rollback pending` line | `confirm polls: bus status`, `sequence 1:`, `sequence 5:` |
+| m09 `AWAITING-UNITS` last, after the wrapper | `sequence 2:` |
+| m10 a refusal names the open activation | `sequence 5:`, `open-activation` |
+| m11 `stale-start` is a refusal | `stale-start is a gate code` |
+| m12 `revert` restores without `MIGRATING` | `revert puts the wrapper back` |
+| m13 `confirm` logs op `confirm` | `sequence 7:`, `confirm polls to a pass` |
+| m14 `MIGRATING` after the migration | `sequence 8:` |
+| m15 `gate` takes its floor from the log without `--since` | `gate (N2` |
+| m16 `copy --bundle` skips the reachability check | stack-copy `row 232:` |
+| m17 `wrapper --create` overwrites | stack-copy `row 232:` |
+
+## Deviations and choices
+
+D1. The shared helpers moved to a new file, `packages/cli/tests/stack-release-fixture.mjs`. The brief's
+files list names `stack-release.test.mjs` "where a shared helper moves" but not a destination. Importing
+from the other test file would run its 74 tests twice, so the helpers need a module of their own.
+
+D2. The fixture's T17 check (what a run may never remove) now exempts a rollback set's `AWAITING-UNITS` and
+`FAILED`. `confirm` removes both when it closes the activation (r6 A5 and R4). User mode writes neither, so
+user-mode runs check exactly what they did.
+
+D3. The user-mode argv and `--plan` tests read the base's scripts with `git show cb5fdb064:` rather than
+storing their output as a fixture file. A later row that changes user-mode output on purpose moves the
+`BASE` constant in the test to its own base, or the test fails. I chose this over a stored fixture because
+a stored copy can drift from the base without anyone noticing.
+
+D4. `marker-failed` is reached by making `state/stack-rollback` unwritable. r6 says "an existing `$RS`", but
+`next_activation` never picks a taken name, so no test can make the run meet an existing `$RS`. The
+exclusive `mkdir` is still what refuses.
+
+D5. The stale-start polling case turns the enter time to `@1792540800`, not r6's `@1792540805`, with the
+started line at 1792540800.900. That also checks that the floor is the whole second, so .900 doesn't push it
+to 1792540801.
+
+D6. No fake `sudo` or `case2-unit.sh`. r6's sequences ran under them because r6 had `case1-repin.sh` drive
+the steps, and that script is I3's. Here the test plays root: it stops and starts the fake system units and
+installs with the existing `bus-service.sh` and `webui-service.sh` stand-ins, between the real
+`stack-release.sh` calls, on one log.
+
+D7. The fake marker in the `open-activation` test is named `20000101T000000Z-<C1 prefix>` so it sorts
+before the real one. A marker that sorted after it would leave m05 (newest marker) alive.
+
+D8. m10 sets `ACT` inside `open_activation`, where r6's wording ("ACT set before the checks") lands in this
+code. `ACT` is set only after every check in `confirm`.
+
+D9. Row 200's `--sso` is a usage error under `--units external`, with the proof flags, `--no-proof` and
+`--no-send`. It is a Console flag, and root's Console unit carries the Console flags; the script under
+external renders no Console line and never calls `console_for_target`, so `sso_checks` doesn't run there
+either. The usage text, the TOOLS.md bullet and the external usage test name it.
+
+D10. Row 200's `config_checks` runs under `--units external` too, after `plugin_checks`, in both the
+`--plan` and run paths of `activate` and `rollback --to`. It checks the target's loader against the stack
+user's `config.json`, which the bus on a VM still reads, so a `console` key the target refuses would break
+root's bus start the same way. The cost is one more refusal (`config-console-key`) an external run can
+print; I took it over a bus that fails after root's start. The rebase changed no user-mode line: the
+conflicts were the `SSO=0` globals line, the `plan` body (row 200's `SSO_PLAN` line sits in the user
+branch) and the two `--plan` lines that gained `config_checks`. In the tests, row 200's fixture lines
+(the loaders, `sso-config.mjs` and the `--sso` cli.mjs line for C1 and C) moved into
+`stack-release-fixture.mjs` with the rest of the copy setup, and the `ALGS` import stays in
+`stack-release.test.mjs`, which T57 uses.
+
+## duckworth-0055's notes on r6 (brief line 169)
+
+Duckworth's r6 approval (REVIEW-r5.md at 23f5520b5) carried two notes.
+
+- N1, A2's stop timeout under `gate --since`. A unit that never stopped keeps its old `ActiveEnterTimestamp`,
+  so `gate --since` fails it with `stale-start`, and the run ends at exit 2 with root stopping the units.
+  That is intended: a unit that won't stop is a fair reason to stop. In I1 this is the gate code and its
+  polling (`stale-start: @1792540799 fails ...`, `gate (N2, A2f)`, m11). The run sheet's A2f line and the
+  re-pin test that points "exits 1 with OLD's gate passing" at an A3 exit 3 belong to I3, which owns
+  `scripts/stack-upgrade.sh` and `docs/guides/host-run-sheet.md`. I'll name both in the I3 build.
+- N2, the claude path under `/opt/mosaic-stack` (gosalyn-0058, sage-1522). I1 doesn't touch it. Under
+  `--units external` the script checks no claude pin of its own (`no-claude-pin` applies only to user
+  mode), because root's unit carries it. The `--claude` value, the managed-settings reasoning, F6 and the
+  run sheet's claude step go to I2 and I3.
+
+## Run environment
+
+Worktree `/mnt/storage/scratch/darkwing-r232`, `TMPDIR=/mnt/storage/scratch/tmp/r232`, node from PATH.
+One external file run takes about 94 s.
+
+## Results
+
+Singles on the rebased candidate, before the gate:
+
+| File | Tests | Pass | Fail |
+|---|---|---|---|
+| `packages/cli/tests/stack-release-external.test.mjs` | 25 | 25 | 0 |
+| `packages/cli/tests/stack-copy.test.mjs` | 16 | 16 | 0 |
+| `packages/cli/tests/stack-release.test.mjs` (row 200's T57 included) | 192 | 192 | 0 |
+| `packages/cli/tests/stack-instances.test.mjs` | 23 | 23 | 0 |
+| `packages/webui/tests/pinned-copy.test.mjs` | 10 | 10 | 0 |
+| `packages/cli/tests/channel-recovery.test.mjs` (imports `channel-fixture.mjs`, which names the scripts) | 1 | 1 | 0 |
+| `packages/cli/tests/host.test.mjs` (reads `packages/cli/README.md`) | 42 | 42 | 0 |
+
+These are every test file that reads `stack-release.sh` or `stack-copy.sh` (a grep of `packages/*/tests` and
+`scripts/`). None of them pins a sha256 of a changed file. `packages/cli/tests/host.test.mjs` reads
+`packages/cli/README.md` for a unit file name; this row only adds a paragraph there. The grep and the runs
+were repeated on the rebased tree on 2026-10-21; the reader set is the same. A dry run of `mutants.sh`
+matches each of the 17 replacements once on the rebased scripts.
+
+### Gate, 2026-10-21, Sage's slot (sage-1618)
+
+Candidate a0ffabc3f on `darkwing/row232-r1`, run by `~/darkwing-scratch/r232/gate.sh`: the cli suite, then
+every `scripts/test-*.sh`, one after another, stopping at the first failure. busy.sh passed at 01:07:49Z
+after Launchpad's single `stack-release.test.mjs` run ended. The gate stopped at the first one, so the
+chain waited for that PID to exit and checked again. The EXIT trap removed the compose network; no
+container was left.
+
+| Step | Time (UTC) | Result |
+|---|---|---|
+| `packages/cli`, `node --test tests/*.test.mjs` | 01:07:50 to 01:17:53 | 561 pass, 0 fail, 0 skipped |
+| `scripts/test-auth.sh` | 01:17:53 to 01:17:54 | 15 passed, 0 failed |
+| `scripts/test-conductor.sh` | 01:17:54 to 01:18:00 | 17 passed, 0 failed |
+| `scripts/test-config.sh` | 01:18:00 to 01:18:02 | 31 passed, 0 failed |
+| `scripts/test-discord.sh` | 01:18:02 to 01:18:12 | 78 passed, 0 failed |
+| `scripts/test-extension-package.sh` | 01:18:12 to 01:18:13 | 18 passed, 0 failed |
+| `scripts/test-foundation.sh` | 01:18:13 to 01:19:01 | 44 passed, 0 failed |
+| `scripts/test-land-work.sh` | 01:19:01 to 01:19:14 | 86 passed, 0 failed |
+| `scripts/test-queue.sh` | 01:19:14 to 01:19:37 | 156 node tests pass, queue suite 28 passed, 0 failed |
+| `scripts/test-release.sh` | 01:19:37 to 01:19:51 | 14 passed, 0 failed |
+| `scripts/test-task.sh` | 01:19:51 to 01:20:44 | 98 passed, 0 failed |
+
+### Mutants, 2026-10-21, same slot
+
+`~/darkwing-scratch/r232/mutants.sh`, right after the gate. Both controls (the external file whole, and
+stack-copy's `^row 232: ` tests) exited 0 on the unmutated tree. Each mutant was applied after a checked
+backup and a syntax check, ran its killers from the table above, and was put back with its sha256
+checked. The script stops on any restore mismatch, and it ran to its end.
+
+| Mutant | Killer exit | Result |
+|---|---|---|
+| m01 pointer on gate failure | 1 | killed |
+| m02 gate once | 1 | killed |
+| m03 PM from any instance | 1 | killed |
+| m04 no startedAt check | 1 | killed |
+| m05 newest marker | 1 | killed |
+| m06 --to not compared | 1 | killed |
+| m07 one call without --user | 1 | killed |
+| m08 interim pending line | 1 | killed |
+| m09 marker written last | 1 | killed |
+| m10 refusal names the open activation | 1 | killed |
+| m11 stale-start refuses | 1 | killed |
+| m12 revert always restores | 1 | killed |
+| m13 confirm op | 1 | killed |
+| m14 MIGRATING after migrate | 1 | killed |
+| m15 gate floor from the log | 1 | killed |
+| m16 bundle reachability unchecked | 1 | killed |
+| m17 --create overwrites | 1 | killed |
+
+17 of 17 killed, 01:22:16 to 01:24:32Z. I read the logs for m01 and m09, two of the quick kills: each failed on
+its named test's assertion (m09 on `AWAITING-UNITS` in sequence 2), not on a load error.
+
+## Round 2: rebase onto 8fede5fc6 (sage-1673)
+
+Rebase only. Before the landing gate, a check of BASE..HEAD on the manifest paths found that row 230
+(c8bc5cf4c) had changed one of them after the round 1 base, cb5fdb064. Sage ruled a re-round with a
+scoped review, the same shape as row 210 round 3.
+
+Branch `darkwing/row232-r2`: the two round 1 commits, a0ffabc3f and 84f1a91e6, cherry-picked onto
+8fede5fc6 with no conflict, then this section. No code or test changed.
+
+- `git merge-tree --write-tree origin/refactor darkwing/row232-r1` (refactor at 8fede5fc6) gives tree
+  837bde79236c with no conflict. The cherry-picked tip before this section has the same tree.
+- `packages/cli/README.md` is a clean 3-way merge. Row 230's hunk is at lines 710-717 (the session credential
+  paragraph); this row's is a new paragraph at 773. With `git patch-id --stable`, the README diff from r1 to
+  r2 is 02b679e2, the same as row 230's README diff `cb5fdb064..8fede5fc6`. This row's README diff is
+  c395ecd2 on both bases (`cb5fdb064..r1` and `8fede5fc6..r2`).
+- The seven code, test and doc paths other than the README hash the same as in manifest 7a3b4ea1, which
+  Filbert approved in round 1: `docs/TOOLS.md`, `packages/cli/tests/stack-copy.test.mjs`,
+  `packages/cli/tests/stack-release-external.test.mjs`, `packages/cli/tests/stack-release-fixture.mjs`,
+  `packages/cli/tests/stack-release.test.mjs`, `scripts/stack-copy.sh`, `scripts/stack-release.sh`.
+  This file also matched until this section was appended. Its other lines are unchanged.
+- The one test that reads the README, `host.test.mjs:855`, looks for the unit's `EnvironmentFile=` line.
+  That line is unchanged context in row 230's hunk.
+- No row 230 test reads `stack-release.sh` or `stack-copy.sh`, and no test of this row reads a row 230 file.
+
+Nothing was run for this round. The landing gate runs on the r2 tip on Sage's slot.
+
+Follow-up, doc-only (sage-1673): `scripts/case2-unit.sh:108` and `scripts/case2-precheck.sh:157` cite
+`scripts/stack-copy.sh:8` and `:22` for `COPIES` and `copy_root`. With this row those lines are `:10` and
+`:26`. Only comments are affected and no test reads them. Row 233 doesn't touch those scripts, so the fix
+goes on the #1732 carry list.
@@ -0,0 +1,249 @@
+# Row 233 (I3): root's upgrade driver and the host run sheet
+
+Brief: `docs/plans/2026-10-20_installer-rows.md` section I3, blob `e61291bcf1c6` (commit a0e3d7cfd), re-pinned
+by Sage (sage-1685, rev 2631) from `f35e7e57daee` (ad6f0be7a). The later blob only appends I4; the I3 text
+is the same. Gitea #1735, Vikunja P19
+#432. Owner Darkwing, reviewer Filbert, gate owner Sage. Design input: row 195 DESIGN r6,
+`agents/darkwing/work/queue-195/DESIGN.md` at b7239bb66, sections 2, 4 and 7. Where the brief and r6
+differ, the brief wins. Sage's rulings during the build: sage-1650 and sage-1652 (`--backup last`, the
+`--no-rehearsal` mapping, `--rehearse-port`, hostcheck), and sage-1653 (`from_log newest`, the two external
+plan refusals, the `BACKUP_STORE` line).
+
+## Files
+
+Base: e65a3ab4d, row 232's landing, on `darkwing/row233-r1`. The build started on ea1e85c7b
+(`darkwing/row233`, row 232's candidate e6ca230d2 and its BUILD.md) before row 232 landed. The three row 232
+files this row changes are identical on the two bases, so the uncommitted diff moved across unchanged.
+
+- `scripts/stack-upgrade.sh` (new): `upgrade` and `rollback`, root's side of r6 A1-A5, A2f and R1-R4.
+- `packages/cli/tests/stack-upgrade.test.mjs` (new, 20 tests).
+- `docs/guides/host-run-sheet.md` (new).
+- `docs/TOOLS.md`: a new subsection "Root's upgrade driver (`scripts/stack-upgrade.sh`, row 233)", plus the
+  row 232 lines below.
+- Row 232 files, changed on Sage's rulings (the brief's files list doesn't name them):
+  - `scripts/stack-release.sh`:
+    - `rehearse --backup last` takes the newest backup the log records (`from_log newest`) and prints
+      `PASS backup-last`. With none it fails `no-backup`, exits 3 and makes no rehearsal directory.
+      A newest backup that isn't an activation id aborts `backup-unreadable`, exit 1.
+    - The rehearsal prints `BACKUP_STORE <activation id> schema <version>` before its migration step.
+    - `--plan` under `--units external` refuses `open-activation` when any rollback set holds
+      `AWAITING-UNITS`, and `migrate-required` for a migrating target without `--migrate`. Root reads
+      only the plan's exit, so these two have to be refusals there. User mode prints the same bytes.
+  - `packages/cli/tests/stack-release.test.mjs`: three new `row 233:` tests for `--backup last`.
+  - `docs/TOOLS.md`: `--backup ACTIVATION|PATH|last` in the rehearse usage, a paragraph on `last`, and a
+    paragraph on the two external plan refusals.
+- This file.
+
+## The brief, item by item
+
+| Brief item | Where |
+|---|---|
+| Root runs from a root-owned checkout, never a copy | `head-mismatch` (A1); TOOLS.md; run sheet section 6 |
+| I2's render with `/etc/mosaic-stack/<instance>.args`, `--copy` the one changed value | `read_args`, `args_with`; the args test |
+| The args file changes only after a confirmed run | `prepare_args` before A2, `mv` after A5; sequences 1 and 7, m6 |
+| `copy --bundle` as the stack's user before A1 | the `fetch`, `ff`, `copy` steps; sequence 1's sudo keys |
+| A rehearsal before A2, a failed one refuses with nothing stopped | `rehearse`; three rehearsal tests, m4 |
+| The root lock, held to the end, rollback included | `flock -n 9`; the lock test and sequence 3's probe, m1, m2 |
+| A1 refuses `open-activation` | stack-release.sh's external plan; the AWAITING-UNITS test, m3 |
+| `migrate-required` without `--migrate` | stack-release.sh's external plan; its test, m5 |
+| The step log, 0640, one line per step | `logl`, `step`; every test checks lines against `STEP` |
+| Exit codes 0-3 | `finish`, `refuse`; exit 4 is usage |
+| duckworth-0055's notes | the next section |
+| Root parses no stack user output beyond exits | the step log test; the one exception is sage-1653's `BACKUP_STORE` |
+| The host run sheet | `docs/guides/host-run-sheet.md` |
+
+## duckworth-0055's notes on r6 (brief line 169)
+
+- N1, A2's stop timeout under `gate --since`. Row 232's BUILD.md left two pieces to I3. The run sheet's
+  A2f line is in section 6 ("When a run doesn't exit 0", exit 2). The test is `N1: a bus that outlives
+  A2's timeout keeps its old start`: a bus that ignores `stop` keeps its old `ActiveEnterTimestamp`,
+  `wait-down` logs `rc=1 ... state: active`, A2f restarts and gates, the gate fails `stale-start`, and the
+  driver stops both units and exits 2. Sequence 4 is the other half: an A3 exit 3 goes to A2f and exits
+  1 with the old copy's gate passing.
+- N2, the claude path under `/opt/mosaic-stack`. Run sheet section 3 installs it there as root with
+  managed settings. The args file's `--claude` carries it, and `case2-unit.sh` already refuses a binary
+  that isn't root's or sits under the home. The driver passes the args file through and adds no claude
+  check of its own. F6 is I2's.
+
+## Sage's rulings during the build
+
+- sage-1650 and sage-1652. Root always runs the rehearsal and maps its exit:
+  - 0 goes on, or refuses `rehearsal-required` with `--no-rehearsal`.
+  - 3 refuses `no-backup`, or with `--no-rehearsal` logs `rehearsal-skipped` and goes on.
+  - Anything else refuses `rehearsal-failed`.
+
+  `--rehearse-port N`, default 7339. Hostcheck: a missing file or a nonzero `--check` refuses
+  `profile-drift`.
+- sage-1653. `from_log newest`, and the external plan refusals `open-activation` and `migrate-required`.
+  Residual: the `BACKUP_STORE` id and schema land in root's step log, but nothing ties that backup to the
+  one the activation's own backup step takes later. A stopped backup before the upgrade would close that
+  gap; it's a later row, not this one.
+
+## Tests
+
+`stack-upgrade.test.mjs` runs the driver as the test's user against a scratch root, with the test seams
+`STACK_UPGRADE_*`. The stand-ins are a fake `sudo` (logs its argv, checks the driver's form, then runs the
+real command as the test's user, r6's B1 pattern), a fake `case2-unit.sh` render that installs and starts
+the fixture units, a fake `systemctl` for root's system units, and a shell `hostcheck.sh`. The stack's
+user's steps run the real `stack-release.sh` and `stack-copy.sh` from a clone made from a real bundle. The
+units, copies and store are `stack-release-fixture.mjs`'s.
+
+| Test | Covers |
+|---|---|
+| sequence 1 | confirm fails healthz, rollback with `--cause A5`, exit 1; every sudo call in the driver's form |
+| sequence 2 | `activate --migrate` fails at the wrapper, store restored, `--cause A3`, exit 1 |
+| sequence 3 | render fails, `--cause A4`; a probe run during `render-old` refuses `upgrade-running` |
+| sequence 4 | stage exits 3, A2f restarts and gates the old units, exit 1 |
+| N1 | a unit that won't stop: A2f's gate fails `stale-start`, exit 2, units stopped |
+| sequence 5 | confirm of the wrong copy refused, `--cause A5`, exit 1 |
+| sequence 6 | revert fails, exit 2; the next run refuses `interrupted-run` at its plan |
+| sequence 7 | two upgrades and a `rollback --to` with `--restore`; the args file after each confirm; `to-not-previous` |
+| sequence 8 | a migration that writes and fails, store back byte for byte, exit 1 |
+| lock | a second run while the lock is held: one log line, no call |
+| open-activation | any `AWAITING-UNITS` refuses at A1, nothing stopped |
+| migrate-required | refused without `--migrate`, no rehearsal, nothing stopped |
+| rehearsal-failed | the rehearsal's argv, exit 3, nothing stopped |
+| `BACKUP_STORE` | the line after a match; four malformed lines log `BACKUP_STORE none` |
+| no-backup | the real rehearsal with no backup refuses; `--no-rehearsal` logs the skip and goes on |
+| backup-last | the real rehearsal names the newest backup; `--no-rehearsal` with one refuses `rehearsal-required` |
+| args file | group write, other write, two `--copy`, an unknown flag, a symlink, `args-differ` |
+| hostcheck | nonzero `--check` and a missing file refuse `profile-drift` before the plan |
+| head-mismatch | checkout not at `--sha`; a commit the clone can't fast-forward to refuses `fetch-failed` |
+| usage | twelve bad argvs exit 4 with no log and no lock |
+
+The step log check (`STEP`) runs in every test that reads the log: each line must be a step line or the
+result line, and none may hold the stack user's output (`stack-release:`, `PASS `, `FAIL `, `REHEARSAL`,
+the fake rehearsal's text).
+
+## Mutants
+
+`~/darkwing-scratch/r233/mutants.sh`, not committed because it edits the worktree. It has the brief's six
+mutants and two for sage-1650's mapping. The method is row 232's: a checked backup, exact replacements, a
+syntax check, the named killers, then the file put back with its sha256 checked. One control runs first:
+the whole `stack-upgrade.test.mjs` with no change. `DRY=1` matched each replacement once on the candidate
+(2026-10-21).
+
+| Mutant | File | Killers |
+|---|---|---|
+| m1 drop the flock | stack-upgrade.sh | `a second run while the lock is held`, `sequence 3:` |
+| m2 release the lock when the rollback starts | stack-upgrade.sh | `sequence 3:` |
+| m3 skip A1's open-activation check | stack-release.sh | `A1 refuses open-activation` |
+| m4 skip the rehearsal | stack-upgrade.sh | `the rehearsal runs after the plan`, `sequence 1:` |
+| m5 accept a migrating target without `--migrate` | stack-release.sh | `migrate-required` |
+| m6 write the args file before confirm | stack-upgrade.sh | `sequence 7:`, `sequence 1:` |
+| m7 `--no-rehearsal` accepted with a backup | stack-upgrade.sh | `refuses rehearsal-required` |
+| m8 drop the `rehearsal-skipped` line | stack-upgrade.sh | `a real rehearsal with no backup` |
+
+## Deviations
+
+D1. The brief has A1 refuse `open-activation` for an open `AWAITING-UNITS` or a non-empty `interrupted`
+set. The interrupted case refuses with row 232's existing code, `interrupted-run`; only `AWAITING-UNITS`
+gives `open-activation`. Both reach root as `plan-refused`, exit 3 (sequence 6, the open-activation test).
+
+D2. Root copies one line of the stack user's output into its log, `BACKUP_STORE`, on sage-1653. It
+matches a fixed pattern first, takes the last match, logs `BACKUP_STORE none` otherwise, and decides
+nothing on it.
+
+D3. The stack user's steps carry no `--instance`. The driver takes `--instance dev` only, row 190's default
+instance, which the stack user's commands select with no flag. A named instance's units are a later row.
+
+D4. Most tests fake the rehearsal in the fake `sudo`: the fixture's stub copies can't pass a real one. Two
+tests run the real rehearsal (`faults/real-rehearse`): no-backup and backup-last. `stack-release.test.mjs`
+covers `--backup last` itself.
+
+D5. Any nonzero `--plan` exit refuses `plan-refused`, exit 3, whatever the code. The stack user's output
+above it names the refusal; root doesn't parse it.
+
+D6. `rollback --restore ACT` is accepted without `--events`, as `stack-release.sh rollback` accepts it.
+The brief's usage pairs them. `--events` without `--restore` is a usage error.
+
+D7. The refusal of any `STACK_UPGRADE_*` seam when run as root has no test, because the tests don't run
+as root. It is three lines at the top of the script.
+
+D8. The fake `sudo` keeps the test's environment, where real `sudo` resets it. The driver passes
+everything the stack user needs through `env PATH=...` and `-H`, and the fake checks that form.
+
+D9. Exit 3 means nothing stopped, not nothing changed. A refusal after `fetch` leaves the stack user's
+clone fast-forwarded and the new copy made. Both are the user's own state, and the next run reuses them.
+TOOLS.md and the run sheet say so.
+
+D10. The brief's usage has neither `--no-rehearsal` nor `--rehearse-port`. Both come from sage-1650 and
+sage-1652.
+
+## Decisions
+
+- `rollback` has no HEAD check. Its target is an older copy than root's checkout, which already exists.
+  It fetches, copies and rehearses nothing (sequence 7).
+- The new args file is written next to the old one (`.dev.args.XXXXXX`, same mode) before A2, so a full
+  `/etc` refuses before anything stops. It moves into place after A5. A2f and the rollback remove it; a failed move keeps it and names it.
+- Every stack user step gets `--copies` explicitly, so the copies directory comes from the args file's
+  `--home`, never from the user's environment.
+- The stack's user does the fetch, the fast-forward and the copy, so root never runs git on a tree that
+  user can write.
+- A4 is the render, and `case2-unit.sh` starts the bus, then the Console. The forward path has no
+  `systemctl start` of its own; only A2f does.
+
+## Run environment
+
+Worktree `/mnt/storage/scratch/darkwing-r233`, `TMPDIR=/mnt/storage/scratch/tmp/r233`, node from PATH. One
+whole `stack-upgrade.test.mjs` run takes about 56 s.
+
+## Results
+
+### Singles, run 1, 2026-10-21, Sage's slot (sage-1689)
+
+`~/darkwing-scratch/r233/singles.sh` on `darkwing/row233-r1` (base e65a3ab4d, uncommitted tree), 03:48:20Z
+to 03:59:00Z. These are the test files that read a changed script. `stack-instances.test.mjs` reads
+`stack-release.sh`, so it joined the three named in the plan.
+
+| File | Result |
+|---|---|
+| `stack-upgrade.test.mjs` | 20 pass, 0 fail |
+| `stack-release.test.mjs` | 194 pass, 1 fail |
+| `stack-release-external.test.mjs` | 25 pass, 0 fail |
+| `stack-instances.test.mjs` | 23 pass, 0 fail |
+
+The failure was my test, not the script. "row 233: --backup last takes the newest backup..." compares
+`untouched(e)` before and after the run, and `untouched` includes `existsSync(e.log)`. The test took its
+before snapshot ahead of `rlog()`, which writes the log, so that flag went from false to true. Every hash in
+the snapshot matched. The fix takes the snapshot after `rlog()`. No other row 233 test calls `untouched`.
+
+### Singles, run 2
+
+`~/darkwing-scratch/r233/rerun.sh` on aacfa2d7a, Sage's slot (sage-1695), 04:13:05Z to 04:21:28Z:
+`stack-release.test.mjs` whole, 195 pass, 0 fail, 0 skipped. The fixed test passed. The other three files
+did not change after run 1. The gate and the mutants run next, in Sage's slot.
+
+### Gate and mutants, 2026-10-21, Sage's slot (sage-1704)
+
+`~/darkwing-scratch/r233/gate.sh` then `mutants.sh`, chained behind `busy.sh`, on d99166ade (code
+aacfa2d7a; d99166ade changes only this file). Counts are an awk sum over `gate-r1.out`.
+
+| Part | Time (UTC) | Result |
+|---|---|---|
+| cli suite (`node --test tests/*.test.mjs`) | 04:29:01-04:37:27 | 616 pass, 0 fail, 0 skipped |
+| the 10 `scripts/test-*.sh` | 04:37:27-04:39:38 | selftests 429 passed, 0 failed; `test-queue`'s node part 156 pass, 0 fail |
+| gate total | | 1201 pass, 0 fail, 11 suites, `GATE_PASSED` |
+| c0 control | 04:39:38-04:40:35 | exit 0 |
+| m1-m8 | 04:40:35-04:41:25 | 8 of 8 killed, every one exit 1 |
+
+Every restore passed its sha256 check, and `git diff` was clean at d99166ade afterwards. The EXIT trap
+removed the `darkwing-r233_default` network.
+
+N1, found in the process sweep after the run: a `sleep 60` was left with its cwd in `packages/cli`.
+`stack-upgrade.test.mjs:312` spawns `flock LOCK sleep 60`, and its `t.after` SIGKILLs only the flock, so
+flock's child outlives the test by up to 60 s. It exited on its own. Row 232's T20
+(`stack-release.test.mjs:370`) spawns its holder `detached` and kills the group with `process.kill(-pid)`.
+The fix is the same two lines. That test is one of m1's killers.
+
+Sage ruled it a fix now (sage-1707), and 08db6ac3f makes it, test only. After the gate's d99166ade
+the only change outside this file is that test:
+
+```
+$ git diff --stat d99166ade 08db6ac3f
+ packages/cli/tests/stack-upgrade.test.mjs | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+```
+
+The gate stands on Sage's ruling. The rerun is the whole `stack-upgrade.test.mjs` singly plus m1, in
+Sage's slot, with a sweep for a leftover `sleep` afterwards.
@@ -0,0 +1,173 @@
+# Row 240 (I4): root's host check, its pins and the boot unit
+
+Brief: `docs/plans/2026-10-20_installer-rows.md` section I4, blob `4a5a65020f00` (commit b00d7d94d, rev 2665,
+the pin row 240 carries; the I3 carry items came in with it). Sage split it out of I3 (sage-1650). Gitea #1746, Vikunja P19 #432. Owner Darkwing, reviewer Filbert, gate owner Sage.
+Design: row 195 DESIGN r6 B2, `agents/darkwing/work/queue-195/DESIGN.md` at b7239bb66, :262-303 (the script,
+the three callers) and :839-860 (files, test cases, mutants). Where the brief and r6 differ, the brief wins.
+
+## Files
+
+Drafted on `darkwing/row240-r1` from d99166ade (row 233's candidate) while row 233's gate ran, then applied
+as one patch onto row 233's landing, 57f59e0c3, on `darkwing/row240-r2` (sage-1753). It applied cleanly; between
+the two bases the only change on this row's paths is 233's N1 test fix in `stack-upgrade.test.mjs`. Row 234
+then landed as c771a36f4 on 57f59e0c3. Sage preferred that the gate run with it in the tree (sage-1773), so both
+commits were picked onto c771a36f4 as `darkwing/row240-r3`. That was a clean pick: the 42 paths changed from
+57f59e0c3 to c771a36f4 share none with this row's 9.
+
+- `scripts/case1-pins.sh` (new, 0644): `PIN_PROFILES_VERSION`, `PIN_PROFILE_SHA256`, `PIN_BUBBLEWRAP_VERSION`,
+  r6 section 0's values.
+- `scripts/case1-hostcheck.sh` (new, 0755): the seven items and `--check`, `--enforce`, `--upstream`.
+- `packages/cli/systemd/mosaic-hostcheck.service` (new): the boot oneshot.
+- `packages/cli/tests/case1-hostcheck.test.mjs` (new, 16 tests). The cli suite's `tests/*.test.mjs` glob picks
+  it up.
+- `docs/guides/host-run-sheet.md` section 4: the install lines that replace "Install them from row 240's run
+  sheet lines once it lands", plus rollback, drift recovery and `--upstream` before a re-pin window. Sections
+  3, 6, 8 and 10 for the I3 carry items below.
+- `scripts/stack-upgrade.sh` and `packages/cli/tests/stack-upgrade.test.mjs`: I3 N1 below.
+- `docs/TOOLS.md`: a new subsection "Root's host check (`scripts/case1-hostcheck.sh`, row 240)" after the
+  upgrade driver's.
+
+Brief line 257 said I3's `stack-upgrade.sh` doesn't change. Sage's ruling sage-1727 widened the row to it for
+N1 alone. Its default `STACK_UPGRADE_HOSTCHECK=/usr/local/lib/mosaic-stack/hostcheck.sh` is where the run
+sheet installs this script.
+
+## Carried from I3
+
+Filbert's row 233 approve (Gitea 29922) left five notes. Sage ruled N1, N4 and N5 into this row and N2 and N3
+to DEFERRED.md (sage-1727).
+
+| Note | Change |
+|---|---|
+| N1: `stack-upgrade.sh` exits 1 `args-failed` when the args move after A5 fails, but exit 1 means the old copy runs | The move's failure exits 5 `args-failed`. The header, TOOLS.md's step 5 and exit line, and run sheet section 6's exit list name exit 5 and what root does: move the new file the result line names into place. Test `row 240: I3 N1: a failed args move after A5 exits 5 ...` makes `/etc/mosaic-stack` read-only at confirm and checks exit 5, the step names, `args rc=1`, the result line, both units on the new copy, the old args file's bytes and the new file beside it. The step log regex takes `exit=5`. Mutant M8. |
+| N4: section 3's `npm install` has no npm on root's PATH, and the `--claude` path is unnamed while `node_modules/.bin/claude` is a symlink `case2-unit.sh:140` refuses | The install line runs with section 2's pinned node first on PATH (the postinstall runs `node` too). The `--claude` path is `node_modules/@anthropic-ai/claude-code/bin/claude.exe`, and a `--version` line catches the postinstall's 500-byte stub. |
+| N5: sections 8 and 10 lack precheck lines | Each gets "Precheck line: none" and its missing line. |
+
+Exit 5 is new rather than 2 because 2 means both units are stopped, and here both run. Exit 4 stays usage.
+
+The `claude.exe` path comes from the 2.1.304 package itself: `npm view` gives `bin.claude` as `bin/claude.exe`,
+and its `install.cjs` hardlinks the platform binary over that placeholder, or copies it across devices, then
+sets 0755. I downloaded the tarball into `/mnt/storage/scratch/tmp/r240/cc304` and read it; nothing ran. The
+run sheet says a newer pin needs the same check.
+
+## The brief, item by item
+
+| Brief line | Where |
+|---|---|
+| 247 `case1-pins.sh` holds the three pins | `scripts/case1-pins.sh`; the pins test checks the values against r6's |
+| 248-249 seven items, `--check` exits 0 or 1 | `items()` and the final dispatch; the check tests |
+| 250-251 `--enforce`: `apparmor_parser -R`, `root:root 0700`, `DRIFT`, a log line, exit 0 | `enforce()` and `stop_bwrap()`; the four enforce tests |
+| 252 `--upstream` compares the current deb to the pin | `upstream()`; the upstream test |
+| 253 the boot oneshot | `mosaic-hostcheck.service`; the boot unit test |
+| 254-255 fakes for every host tool, r6's seven case groups, seven mutants | the test file; Tests and Mutants below |
+| 257 the I3 run sheet item points here | run sheet section 4 |
+
+## Tests
+
+Fakes on PATH, each logging its argv to `$HC/calls.log`: `aa-status`, `dpkg`, `dpkg-statoverride`,
+`apparmor_parser`, `systemd-run`, `stat`, `chown`, `chmod`, `apt-get`, `dpkg-deb`. `host(t)` builds a scratch
+root (`/etc`, `/proc/sys`, `/usr/bin/bwrap`, `/var/log`) and a lib dir with a copy of the script and fixture
+pins that hold the fixture profile's sha256. Every run passes `--root`.
+
+r6's case groups (:843-856) against the tests:
+
+| r6 case | Tests |
+|---|---|
+| `--check` exits 0 with all seven, 1 with each failing alone, its line naming it | `check: exits 0 ...`, `check: exits 1 with each item failing alone ...`, plus one test per item for the item's edge cases |
+| item 3: a second file naming `bwrap` as a word, `/{usr/,}bin/bwrap` included; passes with the profile alone | `check: item 3 ...` |
+| item 4: `unpriv_bwrap (enforce)` or a trailing space fails; the argv carries `-p NoNewPrivileges=yes` and the 2a' properties | `check: item 4 ...` checks the whole argv |
+| item 7: the floor at 732 fails | `check: item 6 ...; item 7 ...` (733 passes as the control) |
+| `--enforce` exits 0 on a pass and every failure; unload, close, `DRIFT`, one log line; `DRIFT` present with every item passing still closes | `enforce: a pass ...`, `enforce: each failure ...`, `enforce: with DRIFT present ...` |
+| `--enforce` never calls `dpkg-statoverride` with `--update`, `--add` or `--remove` | `enforce: no unload ...; never writes the statoverride` (every call is `--list /usr/bin/bwrap`) |
+| a bubblewrap version other than the pin is a line, not a failure | `check: a bubblewrap version other than the install pin ...` |
+| `--upstream` against a differing deb prints the difference, exits 0 | `upstream: ...` (also: a match, a deb with no profile, a failed download) |
+| the unit: `Type=oneshot`, `After=apparmor.service`, `[email protected]`, runs `--enforce` | `boot unit: ...` |
+
+The last test also checks that the repo script reads `scripts/case1-pins.sh` beside it, that bad usage exits
+2, and that a non-root run without `--root` refuses.
+
+Singles are the two files that run a changed script: `case1-hostcheck.test.mjs` and `stack-upgrade.test.mjs`.
+Sage asked (sage-1759) whether `stack-release.test.mjs` or `stack-release-external.test.mjs`, which share
+`stack-release-fixture.mjs`, run `stack-upgrade.sh` or `case1-pins.sh`. They don't. `grep -cF` for
+`stack-upgrade`, `case1-pins`, `case1-hostcheck` and `hostcheck` gives 0 in all three files; the control
+`stack-release.sh` gives 2 in the fixture and 8 in `stack-release.test.mjs`. `scripts/stack-release.sh` names
+`stack-upgrade.sh` once, in a comment (:2061). The gate's cli suite runs both files anyway.
+
+## Mutants
+
+r6's seven (:858-860) and one for I3 N1, scripted in `~/darkwing-scratch/r240/mutants.sh` with r233's method: a checked backup,
+an exact replacement that must match once, `bash -n`, the named killer by `--test-name-pattern`, the restore
+and a sha256 check. A dry run matched all eight once each. Results below.
+
+| Mutant | Change | Killer |
+|---|---|---|
+| M1 | `--enforce` exits 1 after the stop | `enforce: each failure exits 0 ...` |
+| M2 | `[ ! -e "$DRIFT" ] \|\| had=1` becomes `true \|\| had=1` | `enforce: with DRIFT present ...` |
+| M3 | item 1's `dpkg -S` becomes `owner=""; rc=1` | `check: item 1 fails when a package owns ...` |
+| M4 | item 3's `grep -rlw bwrap` becomes `grep -rlF /usr/bin/bwrap` | `check: item 3 ...` |
+| M5 | item 4's `[ "$label" = "$LABEL" ]` becomes a substring match | `check: item 4 ...` |
+| M6 | item 4 drops `-p NoNewPrivileges=yes` | `check: item 4 ...` (argv) |
+| M7 | item 7's `-gt` becomes `-ge` | `check: item 6 ...; item 7 fails with the floor at 732 ...` |
+| M8 | `stack-upgrade.sh`'s `finish 5 args-failed` becomes `finish 1 args-failed` (I3 N1) | `row 240: I3 N1: a failed args move ...` |
+
+## Deviations
+
+- Repo name `scripts/case1-hostcheck.sh` (r6), installed as `/usr/local/lib/mosaic-stack/hostcheck.sh`, the
+  name in brief line 239 and I3's `stack-upgrade.sh` default. r6's apt hook line says `case1-hostcheck.sh`;
+  the run sheet's hook uses the installed name.
+- `stat` is a fake too. r6 lists seven fakes; a test can't make a root-owned file, so item 5's `stat` reads a
+  fixture.
+- Item 7 with no Console unit installed reads the port as 1023 and says so ("1023, because no Console unit
+  is installed"). Until I2 installs the unit the floor must be above 1023. A unit with no `--port` fails.
+- Item 4 runs under `timeout 60`. A hung `systemd-run` would otherwise hang the apt hook and the boot unit.
+
+## Decisions
+
+- Fail closed where r6 is silent:
+  - pins with no 64-hex sha fail item 1;
+  - `dpkg -S` exit 1 (no owner) passes, exit 0 fails with the owner, any other exit fails with the code;
+  - a failed `aa-status` fails item 2 and counts as loaded, so `--enforce` tries the unload.
+- `--root DIR` is the test seam (r6 :840). Root refuses it; a non-root user needs it. Both exit 2. Root runs
+  with `PATH=/usr/sbin:/usr/bin:/sbin:/bin`.
+- `DRIFT` is append-only (`<stamp> <failed line>`), and `--enforce` never removes it. The log line is written
+  only when the stop runs: `<stamp> enforce stop items=<ids or none> drift-before=<0|1> unload=<rc=N|no-file|skipped> chown=N chmod=N`.
+- `--upstream` exits 1 when the download or the unpack fails, since it then compared nothing. A deb without
+  the profile file is a difference (exit 0), per r6 :302-303.
+- The bubblewrap note reads the version from `dpkg -s bubblewrap`.
+- The run sheet's recovery steps (`chown root:mosaic`, `chmod 0750`, `apparmor_parser -r`, then `--check`
+  before root removes `DRIFT`) are mine. r6 says only that root removes `DRIFT` in a reviewed step.
+
+## Run environment
+
+Worktree `/mnt/storage/scratch/darkwing-r240b`, branch `darkwing/row240-r3` on c771a36f4, with `node_modules`
+linked to the canonical checkout's. Node v26.8.1, kernel 7.2.2-1-cachyos, 16 CPUs, TMPDIR
+`/mnt/storage/scratch/tmp/r240`, compose project `darkwing-r240b`. Sage's slot (sage-1773, 06:16Z). Each run is
+one chain behind `busy.sh`, launched from `/`: `~/darkwing-scratch/r240/run-all.sh` checks the HEAD pin and a
+clean tree, runs the singles, then the mutants (8 killed, none surviving, the tree clean after), then the gate
+(the cli suite and every `scripts/test-*.sh`), each stopping the chain on failure, then sweeps `/proc` cwd links
+for anything left in the r240 trees.
+
+## Results
+
+Run r1, 06:17:10Z on 47ec9fe2f, failed at the singles. `case1-hostcheck.test.mjs` passed 16/0/0, and
+`stack-upgrade.test.mjs` went 20 pass, 1 fail. The failure was the N1 test's own `t.after` hook, which ran
+`chmodSync(e.etc, 0o755)` after the fixture's cleanup had already removed the scratch root, so it threw ENOENT.
+Every assertion in the test body had passed, exit 5 included. The fixture's cleanup runs `chmod -R u+w` on the
+root before `rmSync`, so the 0555 dir never needed the hook. b45852daa drops it and changes nothing else. The
+mutants and the gate didn't run. The sweep found nothing left. Sage counted r1 as this slot's one failure
+(sage-1788).
+
+Run r2, 06:20:41Z to 06:33:28Z on b45852daa, passed. The counts come from awk over the .out files
+(`~/darkwing-scratch/r233/sum.sh`):
+
+| Step | Result |
+|---|---|
+| `case1-hostcheck.test.mjs` | 16/0/0 |
+| `stack-upgrade.test.mjs` | 21/0/0 |
+| c0 control | exit 0 |
+| M1-M8 | 8/8 killed, none survived, every restore's sha256 matched, tree clean after |
+| `packages/cli` suite | 639/0/0 |
+| `scripts/test-*.sh` | auth 15, conductor 17, config 31, discord 78, extension-package 18, foundation 44, land-work 86, queue 156 node + 28 selftest, release 14, task 98; 585 pass, 0 fail |
+| Gate total | 11 suites, 1224 pass, 0 fail |
+| Sweep | nothing left in the r240 trees; the compose network was removed |
+
+This commit adds only these BUILD.md lines. No test reads BUILD.md.
@@ -0,0 +1,91 @@
+# Row 245 build: Duckworth's N1-N3 on `scripts/case1-accept.sh` (row 195 follow-up)
+
+Duckworth approved row 195's manifest round 1 (duckworth-0088, `agents/duckworth/work/row195/REVIEW-m1.md`
+at 6afcee2a5) with three notes that don't block. Row 195's code landed as b65014647, and the notes are in
+`docs/plans/DEFERRED.md` (d6cff0cdd). Row 245 carries them: brief `docs/plans/2026-10-20_hub-own-uid.md` §
+"Row 195 follow-up" at 62ddc96cc, owner Darkwing, reviewer Duckworth, gate owner Sage (sage-1923).
+
+The branch is `darkwing/row245`, on 62ddc96cc. Its first commit is a cherry-pick of `darkwing/row195-n1`
+1e3c4767c, which was written on 37171f65b and never run. The script, test and TOOLS.md blobs are the same
+as in 1e3c4767c, and none of those paths changed between 37171f65b and 62ddc96cc.
+
+## What changes
+
+N1. F9 ran `$ROOT$NODE` as root (`case1-accept.sh:298` at 37171f65b) before F10 checked that `--node` is
+the pinned path. Duckworth offered two fixes: F9's parse through `AS_USER`, or F10's path check first. I
+took the path check, plus one more:
+- F9 now runs node only when `--node` equals `/opt/mosaic-stack/node-<--node-pin>/bin/node`.
+- Then `not_root_only` walks from that file up to `/`. Each entry must be the running user's (root's on the
+  host) with no group or other write, the rule `case2-unit.sh` `root_only` applied when it rendered the
+  units. A symlink fails it, because its mode is 777. The first entry that breaks the rule goes in the
+  evidence.
+
+I didn't run the parse through `AS_USER`. That would hand a check about a root file to the stack's user,
+and a process running as `mosaic` shares that node's uid. Whether it could change what node prints then
+turns on the host's ptrace setting, and the root-only check doesn't depend on that. Sage agreed in
+sage-1877. Rechecking ownership costs one loop and doesn't depend on
+how the host was installed.
+
+N2. The header (:9-15) and the `docs/TOOLS.md` entry now list what root runs: `systemctl show` and
+`is-enabled` (F1, P11), `curl` on the loopback healthz (F2), `sudo -l` (P1, P3), `sudo -u jarvis bwrap
+--version` and `hostcheck.sh --check` (P9), and node for F9 under the rule above.
+
+N3. F6 matched `--claude` by prefix, so `/opt/mosaic-stack/claude-<pin>/../claude-2.0.9/...` passed the
+path check. F6 now fails on any `..` segment, before it runs `--version`. F10 compares for equality, so
+it needed no change.
+
+Row 195's BUILD.md gets a correction entry for deviation 6. Row 195's DESIGN.md is unchanged. Its "either
+works" wording at `DESIGN.md:336-338` is superseded by gosalyn-0087 (root writes `dev.args` at W10), and
+it stays in place: an approved design isn't edited (sage-1877).
+
+## Tests
+
+`packages/cli/tests/case1-accept.test.mjs`:
+- The node stub touches `node-as-root` in the state directory when something runs it outside the fake
+  `sudo` (which sets HOME to the stack's home). `host()` sets the node file's directories and the scratch
+  root to 0755, so the umask can't fail F9.
+- "every check passing" also asserts that root ran the pinned node.
+- New: "F9 won't run --node as root off the pin path or with a writable directory above it". Another node
+  path fails F9 and F10, with no root run. A group-writable `bin/` and a symlinked node each fail F9
+  alone, with the bad path in the evidence and no root run.
+- The F6 test gains a `..` case: a path under `claude-<pin>/` by prefix that names 2.0.9's binary, which
+  prints the pin. F6 alone fails, with "has a .. segment".
+
+That makes 23 tests. All 23 pass on Sage's slot (results below).
+
+## Mutants
+
+The twelve from row 195 still apply, unchanged. These four are new, each one exact replacement:
+
+| # | Mutant | Expected killer |
+|---|---|---|
+| 13 | F9 runs any `--node` (the pin check becomes `true`) | F9 won't run (another node) |
+| 14 | F9 skips the ownership walk (`bad=""`) | F9 won't run (writable `bin/`, symlink) |
+| 15 | `not_root_only` checks only the file, not the directories above it | F9 won't run (writable `bin/`) |
+| 16 | F6 accepts a `..` segment | F6 stub, path and `..` |
+
+The brief's gate asks for a mutant for each of N1 and N3. Mutants 13-15 are N1's, and 16 is N3's.
+
+## Slot plan
+
+Same shape as row 195's steps, on this row's tip: the single test file, then the sixteen mutants, then
+the gate (the cli suite and every `scripts/test-*.sh`), each behind the busy checks and chained with
+`&&`. The scripts are in `/mnt/storage/scratch/darkwing-245-out/`.
+
+## Slot results (grant sage-1961, 2026-10-21)
+
+All three steps ran on 0590a29fc with node v26.8.1, launched from `/`. Both busy checks were CLEAR
+before each step.
+
+- Singles, 11:27:46-11:27:59Z: `case1-accept.test.mjs` passed 23, failed 0.
+- Mutants, 11:28:10-11:31:20Z: all 16 killed, each with exit 1. The runner restored the script, and
+  its sha256 875bb5b7 matches the committed blob. Rows 1-12 died as in row 195. 13, 14 and 15 died on
+  "F9 won't run --node as root off the pin path or with a writable directory above it". 16 died on
+  "F6 fails on a stub that prints nothing, on a path outside claude-<pin> and on a .. segment".
+- Gate, 11:31:20-11:42:51Z: the cli suite passed 664, failed 0, skipped 0. Every `scripts/test-*.sh`
+  exited 0: auth 15, conductor 17, config 31, discord 78, extension-package 18, foundation 44,
+  land-work 86, queue 28 (its node part 156/0), release 14, task 98. That's 429 selftests, none failed.
+- Afterwards no process had its cwd in the worktree, the out dir or TMPDIR, and the
+  `darkwing-r245_default` network was gone.
+
+Logs: `/mnt/storage/scratch/darkwing-245-out/` (`step1.log`, `mut.out`, `mut/m1-16.log`, `gate.out`).
@@ -0,0 +1,7 @@
+# Duckworth
+
+Reviewer seat, Claude Opus 5.5, started by Mos (mos-0977, thread ffceafec). Reviews federation designs and MVP T1 row 193.
+
+No launcher in this directory. The seat runs as a T3 thread and works in its own worktree. It has no
+credentials of its own; until the credentials row settles per-agent identity, it pushes only its own `duckworth/*` branches
+through the repository credential helper (mos-0981), never `refactor`, `main` or another seat's branch.
@@ -0,0 +1,8 @@
+# Gander
+
+Builder seat, Codex gpt-6.1-sol, started by Sage under mos-0977 item 5 (more Codex Sol rows) for the human
+boundary row (P19 333, #1694, mos-0989).
+
+No launcher in this directory. The seat runs as a T3 thread and works in its own worktree. It has no
+credentials of its own; until the credentials row settles per-agent identity, it pushes only its own `gander/*`
+branches through the repository credential helper (mos-0981), never `refactor`, `main` or another seat's branch.
@@ -0,0 +1,711 @@
+{
+  "base": "c3d88840c",
+  "stage": "pre-implementation; not the passing final static check",
+  "occurrences": [
+    {
+      "file": "scripts/case2-unit.sh",
+      "line": 25,
+      "text": "# optional --tester-port N (1024..65535, never --port). Only factory takes"
+    },
+    {
+      "file": "scripts/case2-unit.sh",
+      "line": 163,
+      "text": "            --tester-port) [ \"$PROFILE\" = factory ] || die \"the library profile refuses --tester-port: the tester listener takes writes from loopback with no sign-in\" ;;"
+    },
+    {
+      "file": "scripts/case2-unit.sh",
+      "line": 193,
+      "text": "            --tester-port) tester_port=\"$value\""
+    },
+    {
+      "file": "scripts/case2-unit.sh",
+      "line": 194,
+      "text": "                [[ \"$value\" =~ ^[1-9][0-9]{3,4}$ ]] && [ \"$value\" -ge 1024 ] && [ \"$value\" -le 65535 ] || die \"--tester-port must be 1024..65535: $value\" ;;"
+    },
+    {
+      "file": "scripts/case2-unit.sh",
+      "line": 204,
+      "text": "    [ -z \"$tester_port\" ] || [ \"$tester_port\" -ne \"$port\" ] || die \"--tester-port must differ from --port\""
+    },
+    {
+      "file": "scripts/instance.sh",
+      "line": 114,
+      "text": "# this instance's, whose ExecStart takes PORT as --port or --tester-port."
+    },
+    {
+      "file": "scripts/instance.sh",
+      "line": 132,
+      "text": "                --tester-port) [[ \"$tok\" =~ ^[0-9]{1,5}$ ]] && ports+=(\"$((10#$tok))\") ;;"
+    },
+    {
+      "file": "scripts/case1-accept.sh",
+      "line": 65,
+      "text": "        case \"$a\" in --port) PORT=\"$v\"; i=$((i + 1)) ;; --tester-port) TESTER_PORT=\"$v\"; i=$((i + 1)) ;; esac"
+    },
+    {
+      "file": "scripts/case1-accept.sh",
+      "line": 88,
+      "text": "    refuse \"$ARGS_FILE lacks a numeric --port or --tester-port after --\""
+    },
+    {
+      "file": "scripts/webui-service.sh",
+      "line": 43,
+      "text": "# Console), --tester-socket (private Unix tester), or legacy --tester-port N"
+    },
+    {
+      "file": "scripts/webui-service.sh",
+      "line": 74,
+      "text": "# --tester-port that another installed Console unit in the unit directory"
+    },
+    {
+      "file": "scripts/webui-service.sh",
+      "line": 96,
+      "text": "  FLAGS: [--port N] [--business ID] [--board URL] [--sso [--send] | --public-host NAME --auth-header HEADER --allow-user ID [--send]] [--tester-socket | --tester-port N (legacy copies)] [--proof-header NAME --proof-file PATH]"
+    },
+    {
+      "file": "scripts/webui-service.sh",
+      "line": 97,
+      "text": "  --tester-port: legacy copies only; 1024..65535, different from --port and never 7332; loopback tester listener."
+    },
+    {
+      "file": "scripts/webui-service.sh",
+      "line": 137,
+      "text": "            --tester-port) [ $# -ge 2 ] || usage; TESTER_PORT=\"$2\"; TESTER_SET=1; SERVE_SET=1; shift 2 ;;"
+    },
+    {
+      "file": "scripts/webui-service.sh",
+      "line": 182,
+      "text": "    echo \"webui-service: --tester-port must be 1024..65535, different from --port and never 7332: $TESTER_PORT\" >&2"
+    },
+    {
+      "file": "scripts/webui-service.sh",
+      "line": 266,
+      "text": "    [ \"$TESTER_SET\" = 0 ] || flags=\"$flags --tester-port $TESTER_PORT\""
+    },
+    {
+      "file": "scripts/webui-service.sh",
+      "line": 462,
+      "text": "    if grep -Eq '^ExecStart=.*( --allow-user [^ ][^ ]*( --proof-header [^ ]+ --proof-file /[^ ]+)?| --sso) --send( --tester-port [0-9]+| --tester-socket)?$' \"$target\"; then"
+    },
+    {
+      "file": "scripts/webui-service.sh",
+      "line": 467,
+      "text": "    if grep -Eq '^ExecStart=.* --sso( --send)?( --tester-port [0-9]+)?$' \"$target\"; then"
+    },
+    {
+      "file": "scripts/webui-service.sh",
+      "line": 471,
+      "text": "    tester_port=\"$(sed -n 's/^ExecStart=.* --tester-port \\([0-9][0-9]*\\)$/\\1/p' \"$target\")\""
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 47,
+      "text": "       stack-release.sh activate ID BUSINESS [--pm | --pm-after-harness] [--migrate] [--tester-socket | --tester-port N (legacy copies)]"
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 63,
+      "text": "activate and rollback --plan take --expect-from OLD. --pm, --pm-after-harness, --tester-port, the"
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 126,
+      "text": "            --tester-port) [ \"$OP\" = activate ] && [ $# -ge 2 ] && [ -n \"$2\" ] || usage; TESTER_PORT=\"$2\"; shift 2 ;;"
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 797,
+      "text": "    elif grep -q -- '--tester-port' \"$cli\"; then supported=1; fi"
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 800,
+      "text": "            --tester-port) i=$((i + 1)); inherited=\"${BASE_CONSOLE[i]:-}\" ;;"
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 814,
+      "text": "            [ -z \"$inherited\" ] || DROP_TESTER=\"--tester-port $inherited (replaced by private Unix socket)\""
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 830,
+      "text": "            check_refuse tester-port-invalid \"--tester-port $TESTER_PORT is not a whole port from 1024 to 65535 other than 7332$other\""
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 832,
+      "text": "        [ \"$supported\" = 1 ] || check_refuse tester-port-target \"$TO's Console does not support --tester-port\""
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 833,
+      "text": "        RUN_CONSOLE=(\"${without_tester[@]}\" --tester-port \"$TESTER_PORT\")"
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 837,
+      "text": "        RUN_CONSOLE=(\"${without_tester[@]}\") DROP_TESTER=\"--tester-port $inherited\""
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 878,
+      "text": "    # --send and --tester-port follow the pointer, so a --no-send or a tester port set after that"
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 885,
+      "text": "            --tester-port) i=$((i + 1)) ;;"
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 893,
+      "text": "            --tester-port) i=$((i + 1)); BASE_CONSOLE+=(--tester-port \"${P_CONSOLE[i]:-}\") ;;"
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 897,
+      "text": "    SSO_PLAN=\"sso: dropped; $TO's Console does not support --sso, so the rollback takes the Console flags from $set/$f, with --send and --tester-port as the pointer has them\""
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 903,
+      "text": "# --tester-port. Sets SSO_DROP (the plan's dropped preview flags), PROOF_PLAN and PROOF_STEP."
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 919,
+      "text": "        case \"${kept[i]}\" in --send | --tester-port | --tester-socket) break ;; esac"
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 1076,
+      "text": "            case \"${without_proof[i]}\" in --send | --tester-port | --tester-socket) break ;; esac"
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 1134,
+      "text": "# Row 190: the target Console's --port (7332 when absent) and --tester-port against every other"
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 1142,
+      "text": "            --tester-port) ports+=(\"${RUN_CONSOLE[i + 1]:-}\") ;;"
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 2106,
+      "text": "    for ((i = 0; i < ${#P_CONSOLE[@]}; i++)); do [ \"${P_CONSOLE[i]}\" != --tester-port ] || reserved+=(\"${P_CONSOLE[i + 1]:-}\"); done"
+    },
+    {
+      "file": "packages/cli/tests/case2-unit.test.mjs",
+      "line": 80,
+      "text": "const factoryFlags = () => [\"--port\", \"443\", \"--business\", \"acme\", \"--tester-port\", \"7333\"];"
+    },
+    {
+      "file": "packages/cli/tests/case2-unit.test.mjs",
+      "line": 328,
+      "text": "    [\"--tester-port\", \"7333\", /the library profile refuses --tester-port/],"
+    },
+    {
+      "file": "packages/cli/tests/case2-unit.test.mjs",
+      "line": 364,
+      "text": "  refuses(unit(h, { profile: \"factory\", flags: [\"--port\", \"443\", \"--business\", \"acme\", \"--tester-port\", \"443\"] }), /--tester-port must be 1024\\.\\.65535|--tester-port must differ from --port/);"
+    },
+    {
+      "file": "packages/cli/tests/case2-unit.test.mjs",
+      "line": 365,
+      "text": "  refuses(unit(h, { profile: \"factory\", flags: [\"--port\", \"443\", \"--business\", \"acme\", \"--tester-port\", \"1443\", \"--port\", \"1443\"] }), /given twice/);"
+    },
+    {
+      "file": "packages/cli/tests/case2-unit.test.mjs",
+      "line": 378,
+      "text": "  refuses(unit(h, { profile: \"factory\", flags: [\"--port\", \"443\", \"--business\", \"acme\", \"--tester-port\", \"443\"] }), /--tester-port must be 1024\\.\\.65535/);"
+    },
+    {
+      "file": "packages/cli/tests/case2-unit.test.mjs",
+      "line": 380,
+      "text": "  assert.match(read(UNIT), /--tester-port must differ from --port/);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release-fixture.mjs",
+      "line": 306,
+      "text": " for(const [f,text,mode] of [['scripts/mosaic',script(mosaicStub),0o755],['packages/webui/src/cli.mjs',[B,C1,C].includes(id)?`// fixture Console, never run\\n// serve accepts '--tester-port'\\n// serve accepts '--proof-header' (row 178)\\n${[C1,C].includes(id)?\"// serve accepts '--sso' (row 192)\\n\":''}`:'// fixture Console before tester listener, never run\\n',0o644],['packages/bus/src/store.mjs',store,0o644],['packages/bus/src/migrate-schema.mjs',`(${migrateStub})();\\n`,0o644],['packages/plugins/src/kinds.mjs',[C1,C].includes(id)?KINDS_NEW:KINDS_OLD,0o644],...ssoFiles(id).map(([f,text])=>[f,text,0o644])]){"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 681,
+      "text": "const testerFlags=(e,port='7333')=>['--port',e.port,'--business','acme','--tester-port',port];"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 687,
+      "text": " let r=await run(e,'activate',C1,'acme','--tester-port','7333');assert.equal(r.code,0,r.out+r.err);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 688,
+      "text": " assert.deepEqual(pointer(e).console,testerFlags(e));assert.match(consoleText(e),/--tester-port 7333(?:\\n|$)/);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 690,
+      "text": " r=await run(e,'activate',B,'acme','--tester-port','7334');assert.equal(r.code,0,r.out+r.err);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 692,
+      "text": " assert.match(consoleText(e),/--tester-port 7334(?:\\n|$)/);assert.doesNotMatch(consoleText(e),/--tester-port 7333/);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 693,
+      "text": " assert.equal((consoleText(e).match(/--tester-port/g)||[]).length,1);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 694,
+      "text": " r=await run(e,'activate',C1,'acme','--plan');assert.equal(r.code,0,r.out+r.err);assert.match(r.out,/Console: .*--tester-port 7334/);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 697,
+      "text": " assert.deepEqual(pointer(e).console,testerFlags(e,'7334'));assert.match(consoleText(e),/--tester-port 7334(?:\\n|$)/);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 702,
+      "text": " let r=await run(e,'activate',B,'acme','--tester-port','7333');assert.equal(r.code,0,r.out+r.err);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 705,
+      "text": " assert.match(r.out,/drop[^\\n]*--tester-port 7333/i);assert.doesNotMatch(r.out.split('\\n').find((l)=>l.startsWith('Console: ')),/--tester-port/);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 708,
+      "text": " assert.deepEqual(pointer(e).console,['--port',e.port,'--business','acme']);assert.doesNotMatch(consoleText(e),/--tester-port/);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 709,
+      "text": " assert.match(stepText(e),/drop[^\\n]*--tester-port 7333/i);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 714,
+      "text": " const r=await run(e,'activate',A,'acme','--tester-port','7333');assert.equal(r.code,3,r.out+r.err);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 718,
+      "text": " assert.match(readFileSync(join(repo,'packages/webui/src/cli.mjs'),'utf8'),/--tester-port/);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 724,
+      "text": "  const r=await run(e,'activate',C1,'acme','--tester-port',value);assert.equal(r.code,4,`${value}: ${r.out}${r.err}`);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 731,
+      "text": " let r=await run(e,'activate',C1,'acme','--tester-port','7333');assert.equal(r.code,0,r.out+r.err);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 732,
+      "text": " r=await run(e,'activate',A,'acme','--plan');assert.equal(r.code,0,r.out+r.err);assert.match(r.out,/drop[^\\n]*--tester-port 7333/i);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 736,
+      "text": " edit(join(e.units,CON),'--tester-port 7333','--tester-port 7334');const n=calls(e).length;"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 738,
+      "text": " edit(join(e.units,CON),'--tester-port 7334','--tester-port 7333');"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 740,
+      "text": " assert.deepEqual(pointer(e).console,['--port',e.port,'--business','acme']);assert.doesNotMatch(consoleText(e),/--tester-port/);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 741,
+      "text": " assert.match(stepText(e),/drop[^\\n]*--tester-port 7333/i);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 746,
+      "text": " let r=await run(e,'activate',C1,'acme','--pm-after-harness','--tester-port','7333');assert.equal(r.code,0,r.out+r.err);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 749,
+      "text": " assert.deepEqual(pointer(e).console,testerFlags(e));assert.match(consoleText(e),/--tester-port 7333(?:\\n|$)/);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 821,
+      "text": "  const rule=(port,main)=>`--tester-port ${port} is not a whole port from 1024 to 65535 other than 7332${main?` and the Console's --port ${main}`:''}`;"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 827,
+      "text": "   const r=await run(e,'activate',C1,'acme','--pm-after-harness','--plan','--tester-port',port);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 830,
+      "text": "   const u=await run(e,'activate',C1,'acme','--pm-after-harness','--tester-port',port);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 839,
+      "text": "  const n=calls(e).length,u=await run(e,'activate',C1,'acme','--tester-port','80');"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 843,
+      "text": " await t.test('a target Console without --tester-port',async(t)=>{"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 846,
+      "text": "  const r=await run(e,'activate',A,'acme','--tester-port','7333','--plan');"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 848,
+      "text": "  assert.deepEqual(r.out.split('\\n').filter((l)=>l.startsWith('refuses ')),[`refuses tester-port-target: ${A}'s Console does not support --tester-port`,`refuses unknown-kind-for-target: the business file names plug-in kind(s) harness, which ${A} does not know`]);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 850,
+      "text": "  await refused(e,['activate',A,'acme','--tester-port','7333'],'tester-port-target',`${A}'s Console does not support --tester-port`);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1056,
+      "text": " const r=await run(e,'activate',C1,'acme','--tester-port','7333');assert.equal(r.code,0,r.out+r.err);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1057,
+      "text": " assert.deepEqual(pointer(e).console,[...expected,'--tester-port','7333']);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1058,
+      "text": " assert.ok(consoleText(e).includes([...expected,'--tester-port','7333'].join(' ')));"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1129,
+      "text": " await t.test('tests 1 and 9: the pair goes after the preview flags, before --send and the kept --tester-port, as the unit renders it; a new pair replaces it',async(t)=>{"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1132,
+      "text": "  let r=await prun(e,'activate',C1,'acme','--tester-port','7333');assert.equal(r.code,0,r.out+r.err);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1135,
+      "text": "  assert.ok(out.find((l)=>l.startsWith('Console: ')).endsWith(` ${PREVIEW.join(' ')} ${pair(f).join(' ')} --send --tester-port 7333`));"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1137,
+      "text": "  assert.deepEqual(pointer(e).console,[...pre,...pair(f),'--send','--tester-port','7333']);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1138,
+      "text": "  assert.ok(conExec(e).endsWith(` --checkout ${repo} ${[...pre,...pair(f),'--send','--tester-port','7333'].join(' ')}`),conExec(e));"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1141,
+      "text": "  assert.deepEqual(pointer(e).console,[...pre,...pair(g,'X-Proof-Two'),'--send','--tester-port','7333']);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1162,
+      "text": "  await refused(e,['activate',B,'acme','--tester-port','7333'],'already-active',`${B} is the pointer's copy`);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1351,
+      "text": "  const e=await mk(t),base=await seedPreview(e,undefined,['--send','--tester-port','7333']),want=noSend(base);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1352,
+      "text": "  assert.deepEqual(want.slice(-2),['--tester-port','7333']);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1367,
+      "text": "  await refused(e,['activate',B,'acme','--tester-port','7333'],'already-active',`${B} is the pointer's copy`);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1468,
+      "text": "const ROLLBACK_PLAN=(set)=>`sso: dropped; ${B}'s Console does not support --sso, so the rollback takes the Console flags from ${set}/${SHOW}, with --send and --tester-port as the pointer has them`;"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1480,
+      "text": "  let r=await prun(e,'activate',B,'acme','--tester-port','7333',...pair(f));assert.equal(r.code,0,r.out+r.err);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1481,
+      "text": "  assert.deepEqual(pointer(e).console,[...pre,...pair(f),'--send','--tester-port','7333']);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1483,
+      "text": "  const want=['--port',e.port,'--business','acme','--sso','--send','--tester-port','7333'];"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1486,
+      "text": "   `sso: on; drops ${DROPS}; carries --port ${e.port} --business acme --send --tester-port 7333`]);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1563,
+      "text": "  const out=await planOnly(e,3,'activate',C,'acme','--sso','--tester-port','80');"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1564,
+      "text": "  assert.deepEqual(out.filter((l)=>l.startsWith('refuses ')),[`refuses tester-port-invalid: --tester-port 80 is not a whole port from 1024 to 65535 other than 7332 and the Console's --port ${e.port}`,`refuses sso-slot: ${bad('is inside the repository or the copies')}`]);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1584,
+      "text": "  const e=await mk(t),base=await seedPreview(e,undefined,['--send','--tester-port','7333']);await ssoConfig(e);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1594,
+      "text": "  const want=[...noSend(base.slice(0,-2)),'--tester-port','7333'];"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1682,
+      "text": "  assert.deepEqual(ssoLines(await planOnly(a,0,'rollback','acme')),[`sso: dropped; ${B}'s Console does not support --sso, so the rollback takes the Console flags from ${set}/${show}, with --send and --tester-port as the pointer has them`]);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1811,
+      "text": " writeFileSync(e.pointer,JSON.stringify({copy,business:'acme',pm:true,claude:e.claude,console:['--port',e.port,'--business','acme','--tester-port',TESTER],schema:store,activation:'manual',at:'2026-10-20T00:00:00Z'})+'\\n');"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 2198,
+      "text": "   ['beta\\'s tester port on alpha\\'s port',b,['--port',free,'--tester-port',a.port],1,`webui-service: refusing port-claimed: ${held}; nothing was changed\\n`],"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 2202,
+      "text": "   ['beta\\'s tester port on 7333',b,['--port',free,'--tester-port','7333'],4,'webui-service: port-reserved: 7333 is reserved for the default instance (7330 7332 7333)\\n'],"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 2217,
+      "text": "  await refused('--tester-port','--tester-port',a.port);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 2280,
+      "text": " let r=await run(e,'activate',B,'acme','--tester-port','7333');assert.equal(r.code,0,r.out+r.err);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 2290,
+      "text": " r=await run(e,'activate',C1,'acme','--tester-socket','--plan');assert.equal(r.code,0,r.out+r.err);assert.match(r.out,/--tester-socket/);assert.match(r.out,/drop.*--tester-port 7333/);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 2292,
+      "text": " assert.deepEqual(pointer(e).console,[...base,...pair(proof),'--tester-socket']);assert.match(consoleText(e),/--tester-socket/);assert.doesNotMatch(consoleText(e),/--tester-port/);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 2319,
+      "text": " assert.doesNotMatch(conExec(e),/ --send(?: |$)|--tester-port|--public-host|--proof-header/);"
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 2388,
+      "text": "  assert.equal(context.argv.includes('--tester-socket'),marked);assert.equal(context.argv.includes('--tester-port'),false);"
+    },
+    {
+      "file": "packages/cli/tests/case1-accept.test.mjs",
+      "line": 28,
+      "text": "  \"--node\", NODE, \"--claude\", CLAUDE, \"--pm\", \"--\", \"--port\", \"732\", \"--business\", \"mosaic-stack\", \"--tester-port\", \"7333\"];"
+    },
+    {
+      "file": "packages/cli/tests/case1-accept.test.mjs",
+      "line": 477,
+      "text": "    \"no tester port\": [(h) => put(h.args, ARGS.slice(0, -2).join(\"\\n\") + \"\\n\", 0o644), /lacks a numeric --port or --tester-port after --$/],"
+    },
+    {
+      "file": "packages/cli/tests/case1-hostcheck.test.mjs",
+      "line": 68,
+      "text": "    \"[Service]\\nExecStart=/opt/mosaic-stack/node/bin/node /srv/mosaic/copies/x/packages/webui/src/cli.mjs serve --port 732 --business mosaic-stack --tester-port 7333\\n\");"
+    },
+    {
+      "file": "packages/cli/tests/case1-hostcheck.test.mjs",
+      "line": 215,
+      "text": "  put(join(h.root, \"etc\", \"systemd\", \"system\", \"mosaic-webui.service\"), \"[Service]\\nExecStart=/x serve --business mosaic-stack --tester-port 7333\\n\");"
+    },
+    {
+      "file": "packages/cli/tests/stack-release-external.test.mjs",
+      "line": 75,
+      "text": " for(const a of [['activate',C1,'acme','--pm'],['activate',C1,'acme','--tester-port','7444'],['activate',C1,'acme','--no-proof'],['activate',C1,'acme','--no-send'],['activate',C1,'acme','--sso'],['activate',C1,'acme','--proof-header','X','--proof-file','/p'],['rollback','acme'],['gate',B,'acme'],['activate',C1,'acme','--expect-from',B],['confirm',C1,'acme','--rollback',B],['confirm',C1,'acme','--cause','A5']]){"
+    },
+    {
+      "file": "packages/webui/README.md",
+      "line": 128,
+      "text": "need `--port`, and 7330, 7332 or 7333 as `--port` or `--tester-port` exits 4"
+    },
+    {
+      "file": "packages/webui/README.md",
+      "line": 130,
+      "text": "`--tester-port` that another installed Console unit in the unit directory"
+    },
+    {
+      "file": "packages/webui/README.md",
+      "line": 144,
+      "text": "`serve --sso [--send] [--tester-port N]` makes the Console an OpenID Connect"
+    },
+    {
+      "file": "packages/webui/README.md",
+      "line": 176,
+      "text": "- With `--tester-port`, the tester listener refuses any request carrying an"
+    },
+    {
+      "file": "packages/webui/README.md",
+      "line": 1001,
+      "text": "There is no tester TCP listener. `--tester-port` is retired for this copy."
+    },
+    {
+      "file": "packages/webui/tests/tester-cli.test.mjs",
+      "line": 25,
+      "text": "  for (const flags of [['--tester-port', '7332'], ['--port', '7444', '--tester-port', '7444'], ['--tester-port', '7444', '--port', '7444'], ...['1023', '65536', '1.5', '-1', 'nope'].map(p => ['--tester-port', p])]) {"
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 125,
+      "text": "    const r = await run(dir, ['render', '--tester-port', port, ...PREVIEW, '--send']);"
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 127,
+      "text": "    assert.match(execStart(r.stdout), new RegExp(` --tester-port ${port}( |$)`));"
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 129,
+      "text": "    assert.ok(execStart(r.stdout).endsWith(` ${PREVIEW_FLAGS} --send --tester-port ${port}`));"
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 136,
+      "text": "    const r = await run(dir, ['render', '--port', main, '--tester-port', '7332']);"
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 150,
+      "text": "    ['--tester-port', ''], ['--tester-port', '1023'], ['--tester-port', '65536'],"
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 151,
+      "text": "    ['--tester-port', '-1'], ['--tester-port', '3.5'], ['--tester-port', '1e4'],"
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 152,
+      "text": "    ['--tester-port', 'abc'], ['--tester-port', '7333 '], ['--tester-port', '7333\\n'],"
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 153,
+      "text": "    ['--port', '7444', '--tester-port', '7444'],"
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 154,
+      "text": "    ['--tester-port', '7444', '--port', '7444'],"
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 164,
+      "text": "  assert.equal((await run(dir, ['render', '--tester-port'])).status, 4);"
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 172,
+      "text": "  const six = await run(dir, ['render', '--tester-port', '007333']);"
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 175,
+      "text": "  assert.equal(six.stderr, 'webui-service: --tester-port must be 1024..65535, different from --port and never 7332: 007333\\n');"
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 176,
+      "text": "  const five = await run(dir, ['render', '--tester-port', '07333']);"
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 178,
+      "text": "  assert.ok(execStart(five.stdout).endsWith(' --tester-port 07333'), execStart(five.stdout));"
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 186,
+      "text": "  const installed = await run(dir, ['install', ...INSTALL, '--dir', unitDir, '--no-reload', '--port', String(port), '--tester-port', '1024', ...PREVIEW, '--send'], bin);"
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 188,
+      "text": "  assert.match(installed.stdout, /^serve: .* --tester-port 1024( |$)/m);"
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 189,
+      "text": "  assert.match(execStart(readFileSync(join(unitDir, 'mosaic-webui.service'), 'utf8')), / --tester-port 1024( |$)/);"
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 199,
+      "text": "    const refused = await run(dir, [verb, '--dir', unitDir, '--tester-port', '7333'], bin);"
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 799,
+      "text": "  const r = await run(dir, ['install', ...INSTALL, '--dir', unitDir, '--no-reload', '--port', String(port), ...PREVIEW, '--send', '--tester-port', '1024', '--proof-header', 'x-console-proof', '--proof-file', file], bin);"
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 813,
+      "text": " const both=await run(dir,['render','--tester-socket','--tester-port','7333']);"
+    },
+    {
+      "file": "packages/webui/src/cli.mjs",
+      "line": 30,
+      "text": "    if (flag === '--tester-port') throw new Error('--tester-port retired; activate explicitly with --tester-socket');"
+    }
+  ]
+}
@@ -0,0 +1,197 @@
+# Row253 build record
+
+2026-10-21 design stage. Read brief Static check and Gate before starting. Busy check was CLEAR; claimant gander-253-start recorded rev2995. Branch gander/row253 starts from origin/refactor c3d88840c, after196 landed7247d80c7. Plain linked node_modules retained.
+
+Only DESIGN.md and this record/inventory are written. No product code, tests, host config, units or slot files changed. BASE-PORT-INVENTORY.json records the initial source hits; it is not a passing final static check. The final check must classify every remaining hit after implementation.
+
+Design r1 proposes configured dataRoot resolution as the target user, socket metadata plus an isolated system-Python SO_PEERCRED observation, unchanged hardening, P8 migration and honest unnamed P10 same-uid evidence. Duckworth approval is required before implementation. No test slot requested until the final static check passes; every single/pattern run also needs the slot under sage-2142.
+
+## Implementation before slot
+
+Duckworth-0100 approved design r1 with C1-C5. Code and new tests were written after that approval. Tests are written but unrun: sage-2142 requires a slot even for patterns, and the row253 brief requests static preparation before the slot request. Syntax checks and static source inspection only have run. No behavioral passing claim is made.
+
+C1: component containment, dot/dotdot/double/trailing slash rejection and a no-follow component walk. T4 includes middle symlink and sibling-prefix homes, plus protected/private roots. C2: conservative ASCII path alphabet without whitespace; LC_ALL=C makes pathname length a byte count. C3: bash accepts only the canonical two-key string/boolean JSON. Root never imports the copy. C4: GNU timeout owns a process group; output is capped and the wrapper kills remaining group members and waits for its direct child on success, failure or signal. Tests cover a TERM-ignoring reader and a child that closes stdout before its parent returns. C5: both headers name the new unprivileged config query.
+
+N1: deferred the optional broader MainPID TCP inventory. P8 retains the approved main listener plus 7331/7333 check. N2: removed accepted mos-1101 from MARKS and P_PASS.P10; healthy and failed observations both stay unnamed, per sage-2173. N3: sudo resolves through PATH, matching case1's existing fake seam. N4: F11 retains the default DATA_ROOT Discord check; generalizing it to configured dataRoot is a separate F11 follow-up.
+
+The README had three obsolete current-usage passages. They now show the socket marker; the remaining mention explicitly says TCP is retired. No deliberate legacy source or test changed. Acceptance still runs F9's existing builtin-only settings parser as root under its existing pinned-path checks; the new query and fixed-system-Python observation run only as the stack user with env -i. P10 separately checks its parent, final socket, process uids, stable MainPID and metadata snapshots. Its probe sends no application bytes. Hostile same-uid changes before or after that snapshot remain the stated residual.
+
+Static checks: bash -n on both scripts, node --check on both test files, git diff --check, Python AST parsing on the record drivers, all 33 variant shell syntax checks and unique-target validation. All passed. These are not behavioral tests. Five source/test/doc blobs are frozen in CANDIDATE-SHAS.json for the requested slot. UNIQUENESS.json records original and changed hashes for every definition. No suites or checks have run. Driver names, wrapper argv and controller.log avoid the busy detector's patterns; actual commands are loaded from structured JSON only after the busy guard succeeds. Every run uses bash pipefail and tee.
+
+## Every remaining retired-port hit
+
+Static source audit, not a test run. Each remaining hit and its reason follows.
+
+- `packages/cli/tests/case1-accept.test.mjs:594`: New negative saved-argument fixture asserting the migration refusal. Text: `"retired TCP": [(h) => put(h.args, [...ARGS.slice(0,-1),'--tester-port','7333'].join('\n')+'\n',0o644), /case1-accept.sh retires tester TCP; use --tester-socket$/],`
+- `packages/cli/tests/case1-hostcheck.test.mjs:68`: Deliberate legacy hostcheck fixture; brief step 5 leaves it unchanged. Text: `"[Service]\nExecStart=/opt/mosaic-stack/node/bin/node /srv/mosaic/copies/x/packages/webui/src/cli.mjs serve --port 732 --business mosaic-stack --tester-port 7333\n");`
+- `packages/cli/tests/case1-hostcheck.test.mjs:215`: Deliberate legacy hostcheck fixture; brief step 5 leaves it unchanged. Text: `put(join(h.root, "etc", "systemd", "system", "mosaic-webui.service"), "[Service]\nExecStart=/x serve --business mosaic-stack --tester-port 7333\n");`
+- `packages/cli/tests/case2-unit.test.mjs:445`: New negative factory/library fixtures asserting the migration refusal. Text: `["--tester-port", "7333", /case2-unit.sh retires tester TCP; use --tester-socket/],`
+- `packages/cli/tests/case2-unit.test.mjs:496`: New negative factory/library fixtures asserting the migration refusal. Text: `refuses(unit(h, { profile: "factory", flags: ['--port','443','--business','acme','--tester-port','7333'] }), /case2-unit.sh retires tester TCP; use --tester-socket/);`
+- `packages/cli/tests/stack-release-external.test.mjs:75`: Legacy stack-release external refusal fixture, excluded by brief step 5. Text: `for(const a of [['activate',C1,'acme','--pm'],['activate',C1,'acme','--tester-port','7444'],['activate',C1,'acme','--no-proof'],['activate',C1,'acme','--no-send'],['activate',C1,'acme','--sso'],['activate',C1,'acme','--proof-header','X','--proof-file','/p'],['rollback','acme'],['gate',B,'acme'],['activate',C1,'acme','--expect-from',B],['confirm',C1,'acme','--rollback',B],['confirm',C1,'acme','--cause','A5']]){`
+- `packages/cli/tests/stack-release-fixture.mjs:306`: Retained pre-196 copy fixture for legacy activation and rollback. Text: `for(const [f,text,mode] of [['scripts/mosaic',script(mosaicStub),0o755],['packages/webui/src/cli.mjs',[B,C1,C].includes(id)?`// fixture Console, never run\n// serve accepts '--tester-port'\n// serve accepts '--proof-header' (row 178)\n${[C1,C].includes(id)?"// serve accepts '--sso' (row 192)\n":''}`:'// fixture Console before tester listener, never run\n',0o644],['packages/bus/src/store.mjs',store,0o644],['packages/bus/src/migrate-schema.mjs',`(${migrateStub})();\n`,0o644],['packages/plugins/src/kinds.mjs',[C1,C].includes(id)?KINDS_NEW:KINDS_OLD,0o644],...ssoFiles(id).map(([f,text])=>[f,text,0o644])]){`
+- `packages/cli/tests/stack-release.test.mjs:681`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `const testerFlags=(e,port='7333')=>['--port',e.port,'--business','acme','--tester-port',port];`
+- `packages/cli/tests/stack-release.test.mjs:687`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `let r=await run(e,'activate',C1,'acme','--tester-port','7333');assert.equal(r.code,0,r.out+r.err);`
+- `packages/cli/tests/stack-release.test.mjs:688`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.deepEqual(pointer(e).console,testerFlags(e));assert.match(consoleText(e),/--tester-port 7333(?:\n|$)/);`
+- `packages/cli/tests/stack-release.test.mjs:690`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `r=await run(e,'activate',B,'acme','--tester-port','7334');assert.equal(r.code,0,r.out+r.err);`
+- `packages/cli/tests/stack-release.test.mjs:692`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.match(consoleText(e),/--tester-port 7334(?:\n|$)/);assert.doesNotMatch(consoleText(e),/--tester-port 7333/);`
+- `packages/cli/tests/stack-release.test.mjs:693`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.equal((consoleText(e).match(/--tester-port/g)||[]).length,1);`
+- `packages/cli/tests/stack-release.test.mjs:694`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `r=await run(e,'activate',C1,'acme','--plan');assert.equal(r.code,0,r.out+r.err);assert.match(r.out,/Console: .*--tester-port 7334/);`
+- `packages/cli/tests/stack-release.test.mjs:697`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.deepEqual(pointer(e).console,testerFlags(e,'7334'));assert.match(consoleText(e),/--tester-port 7334(?:\n|$)/);`
+- `packages/cli/tests/stack-release.test.mjs:702`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `let r=await run(e,'activate',B,'acme','--tester-port','7333');assert.equal(r.code,0,r.out+r.err);`
+- `packages/cli/tests/stack-release.test.mjs:705`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.match(r.out,/drop[^\n]*--tester-port 7333/i);assert.doesNotMatch(r.out.split('\n').find((l)=>l.startsWith('Console: ')),/--tester-port/);`
+- `packages/cli/tests/stack-release.test.mjs:708`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.deepEqual(pointer(e).console,['--port',e.port,'--business','acme']);assert.doesNotMatch(consoleText(e),/--tester-port/);`
+- `packages/cli/tests/stack-release.test.mjs:709`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.match(stepText(e),/drop[^\n]*--tester-port 7333/i);`
+- `packages/cli/tests/stack-release.test.mjs:714`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `const r=await run(e,'activate',A,'acme','--tester-port','7333');assert.equal(r.code,3,r.out+r.err);`
+- `packages/cli/tests/stack-release.test.mjs:718`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.match(readFileSync(join(repo,'packages/webui/src/cli.mjs'),'utf8'),/--tester-port/);`
+- `packages/cli/tests/stack-release.test.mjs:724`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `const r=await run(e,'activate',C1,'acme','--tester-port',value);assert.equal(r.code,4,`${value}: ${r.out}${r.err}`);`
+- `packages/cli/tests/stack-release.test.mjs:731`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `let r=await run(e,'activate',C1,'acme','--tester-port','7333');assert.equal(r.code,0,r.out+r.err);`
+- `packages/cli/tests/stack-release.test.mjs:732`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `r=await run(e,'activate',A,'acme','--plan');assert.equal(r.code,0,r.out+r.err);assert.match(r.out,/drop[^\n]*--tester-port 7333/i);`
+- `packages/cli/tests/stack-release.test.mjs:736`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `edit(join(e.units,CON),'--tester-port 7333','--tester-port 7334');const n=calls(e).length;`
+- `packages/cli/tests/stack-release.test.mjs:738`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `edit(join(e.units,CON),'--tester-port 7334','--tester-port 7333');`
+- `packages/cli/tests/stack-release.test.mjs:740`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.deepEqual(pointer(e).console,['--port',e.port,'--business','acme']);assert.doesNotMatch(consoleText(e),/--tester-port/);`
+- `packages/cli/tests/stack-release.test.mjs:741`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.match(stepText(e),/drop[^\n]*--tester-port 7333/i);`
+- `packages/cli/tests/stack-release.test.mjs:746`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `let r=await run(e,'activate',C1,'acme','--pm-after-harness','--tester-port','7333');assert.equal(r.code,0,r.out+r.err);`
+- `packages/cli/tests/stack-release.test.mjs:749`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.deepEqual(pointer(e).console,testerFlags(e));assert.match(consoleText(e),/--tester-port 7333(?:\n|$)/);`
+- `packages/cli/tests/stack-release.test.mjs:821`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `const rule=(port,main)=>`--tester-port ${port} is not a whole port from 1024 to 65535 other than 7332${main?` and the Console's --port ${main}`:''}`;`
+- `packages/cli/tests/stack-release.test.mjs:827`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `const r=await run(e,'activate',C1,'acme','--pm-after-harness','--plan','--tester-port',port);`
+- `packages/cli/tests/stack-release.test.mjs:830`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `const u=await run(e,'activate',C1,'acme','--pm-after-harness','--tester-port',port);`
+- `packages/cli/tests/stack-release.test.mjs:839`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `const n=calls(e).length,u=await run(e,'activate',C1,'acme','--tester-port','80');`
+- `packages/cli/tests/stack-release.test.mjs:843`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `await t.test('a target Console without --tester-port',async(t)=>{`
+- `packages/cli/tests/stack-release.test.mjs:846`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `const r=await run(e,'activate',A,'acme','--tester-port','7333','--plan');`
+- `packages/cli/tests/stack-release.test.mjs:848`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.deepEqual(r.out.split('\n').filter((l)=>l.startsWith('refuses ')),[`refuses tester-port-target: ${A}'s Console does not support --tester-port`,`refuses unknown-kind-for-target: the business file names plug-in kind(s) harness, which ${A} does not know`]);`
+- `packages/cli/tests/stack-release.test.mjs:850`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `await refused(e,['activate',A,'acme','--tester-port','7333'],'tester-port-target',`${A}'s Console does not support --tester-port`);`
+- `packages/cli/tests/stack-release.test.mjs:1056`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `const r=await run(e,'activate',C1,'acme','--tester-port','7333');assert.equal(r.code,0,r.out+r.err);`
+- `packages/cli/tests/stack-release.test.mjs:1057`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.deepEqual(pointer(e).console,[...expected,'--tester-port','7333']);`
+- `packages/cli/tests/stack-release.test.mjs:1058`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.ok(consoleText(e).includes([...expected,'--tester-port','7333'].join(' ')));`
+- `packages/cli/tests/stack-release.test.mjs:1129`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `await t.test('tests 1 and 9: the pair goes after the preview flags, before --send and the kept --tester-port, as the unit renders it; a new pair replaces it',async(t)=>{`
+- `packages/cli/tests/stack-release.test.mjs:1132`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `let r=await prun(e,'activate',C1,'acme','--tester-port','7333');assert.equal(r.code,0,r.out+r.err);`
+- `packages/cli/tests/stack-release.test.mjs:1135`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.ok(out.find((l)=>l.startsWith('Console: ')).endsWith(` ${PREVIEW.join(' ')} ${pair(f).join(' ')} --send --tester-port 7333`));`
+- `packages/cli/tests/stack-release.test.mjs:1137`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.deepEqual(pointer(e).console,[...pre,...pair(f),'--send','--tester-port','7333']);`
+- `packages/cli/tests/stack-release.test.mjs:1138`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.ok(conExec(e).endsWith(` --checkout ${repo} ${[...pre,...pair(f),'--send','--tester-port','7333'].join(' ')}`),conExec(e));`
+- `packages/cli/tests/stack-release.test.mjs:1141`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.deepEqual(pointer(e).console,[...pre,...pair(g,'X-Proof-Two'),'--send','--tester-port','7333']);`
+- `packages/cli/tests/stack-release.test.mjs:1162`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `await refused(e,['activate',B,'acme','--tester-port','7333'],'already-active',`${B} is the pointer's copy`);`
+- `packages/cli/tests/stack-release.test.mjs:1351`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `const e=await mk(t),base=await seedPreview(e,undefined,['--send','--tester-port','7333']),want=noSend(base);`
+- `packages/cli/tests/stack-release.test.mjs:1352`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.deepEqual(want.slice(-2),['--tester-port','7333']);`
+- `packages/cli/tests/stack-release.test.mjs:1367`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `await refused(e,['activate',B,'acme','--tester-port','7333'],'already-active',`${B} is the pointer's copy`);`
+- `packages/cli/tests/stack-release.test.mjs:1468`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `const ROLLBACK_PLAN=(set)=>`sso: dropped; ${B}'s Console does not support --sso, so the rollback takes the Console flags from ${set}/${SHOW}, with --send and --tester-port as the pointer has them`;`
+- `packages/cli/tests/stack-release.test.mjs:1480`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `let r=await prun(e,'activate',B,'acme','--tester-port','7333',...pair(f));assert.equal(r.code,0,r.out+r.err);`
+- `packages/cli/tests/stack-release.test.mjs:1481`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.deepEqual(pointer(e).console,[...pre,...pair(f),'--send','--tester-port','7333']);`
+- `packages/cli/tests/stack-release.test.mjs:1483`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `const want=['--port',e.port,'--business','acme','--sso','--send','--tester-port','7333'];`
+- `packages/cli/tests/stack-release.test.mjs:1486`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: ``sso: on; drops ${DROPS}; carries --port ${e.port} --business acme --send --tester-port 7333`]);`
+- `packages/cli/tests/stack-release.test.mjs:1563`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `const out=await planOnly(e,3,'activate',C,'acme','--sso','--tester-port','80');`
+- `packages/cli/tests/stack-release.test.mjs:1564`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.deepEqual(out.filter((l)=>l.startsWith('refuses ')),[`refuses tester-port-invalid: --tester-port 80 is not a whole port from 1024 to 65535 other than 7332 and the Console's --port ${e.port}`,`refuses sso-slot: ${bad('is inside the repository or the copies')}`]);`
+- `packages/cli/tests/stack-release.test.mjs:1584`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `const e=await mk(t),base=await seedPreview(e,undefined,['--send','--tester-port','7333']);await ssoConfig(e);`
+- `packages/cli/tests/stack-release.test.mjs:1594`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `const want=[...noSend(base.slice(0,-2)),'--tester-port','7333'];`
+- `packages/cli/tests/stack-release.test.mjs:1682`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.deepEqual(ssoLines(await planOnly(a,0,'rollback','acme')),[`sso: dropped; ${B}'s Console does not support --sso, so the rollback takes the Console flags from ${set}/${show}, with --send and --tester-port as the pointer has them`]);`
+- `packages/cli/tests/stack-release.test.mjs:1811`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `writeFileSync(e.pointer,JSON.stringify({copy,business:'acme',pm:true,claude:e.claude,console:['--port',e.port,'--business','acme','--tester-port',TESTER],schema:store,activation:'manual',at:'2026-10-20T00:00:00Z'})+'\n');`
+- `packages/cli/tests/stack-release.test.mjs:2198`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `['beta\'s tester port on alpha\'s port',b,['--port',free,'--tester-port',a.port],1,`webui-service: refusing port-claimed: ${held}; nothing was changed\n`],`
+- `packages/cli/tests/stack-release.test.mjs:2202`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `['beta\'s tester port on 7333',b,['--port',free,'--tester-port','7333'],4,'webui-service: port-reserved: 7333 is reserved for the default instance (7330 7332 7333)\n'],`
+- `packages/cli/tests/stack-release.test.mjs:2217`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `await refused('--tester-port','--tester-port',a.port);`
+- `packages/cli/tests/stack-release.test.mjs:2280`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `let r=await run(e,'activate',B,'acme','--tester-port','7333');assert.equal(r.code,0,r.out+r.err);`
+- `packages/cli/tests/stack-release.test.mjs:2290`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `r=await run(e,'activate',C1,'acme','--tester-socket','--plan');assert.equal(r.code,0,r.out+r.err);assert.match(r.out,/--tester-socket/);assert.match(r.out,/drop.*--tester-port 7333/);`
+- `packages/cli/tests/stack-release.test.mjs:2292`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.deepEqual(pointer(e).console,[...base,...pair(proof),'--tester-socket']);assert.match(consoleText(e),/--tester-socket/);assert.doesNotMatch(consoleText(e),/--tester-port/);`
+- `packages/cli/tests/stack-release.test.mjs:2319`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.doesNotMatch(conExec(e),/ --send(?: |$)|--tester-port|--public-host|--proof-header/);`
+- `packages/cli/tests/stack-release.test.mjs:2388`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.equal(context.argv.includes('--tester-socket'),marked);assert.equal(context.argv.includes('--tester-port'),false);`
+- `packages/webui/README.md:1001`: Current retirement notice explicitly states no tester TCP listener. Text: `There is no tester TCP listener. `--tester-port` is retired for this copy.`
+- `packages/webui/src/cli.mjs:30`: Current CLI explicit retirement refusal, not an activation path. Text: `if (flag === '--tester-port') throw new Error('--tester-port retired; activate explicitly with --tester-socket');`
+- `packages/webui/tests/service.test.mjs:125`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `const r = await run(dir, ['render', '--tester-port', port, ...PREVIEW, '--send']);`
+- `packages/webui/tests/service.test.mjs:127`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `assert.match(execStart(r.stdout), new RegExp(` --tester-port ${port}( |$)`));`
+- `packages/webui/tests/service.test.mjs:129`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `assert.ok(execStart(r.stdout).endsWith(` ${PREVIEW_FLAGS} --send --tester-port ${port}`));`
+- `packages/webui/tests/service.test.mjs:136`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `const r = await run(dir, ['render', '--port', main, '--tester-port', '7332']);`
+- `packages/webui/tests/service.test.mjs:150`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `['--tester-port', ''], ['--tester-port', '1023'], ['--tester-port', '65536'],`
+- `packages/webui/tests/service.test.mjs:151`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `['--tester-port', '-1'], ['--tester-port', '3.5'], ['--tester-port', '1e4'],`
+- `packages/webui/tests/service.test.mjs:152`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `['--tester-port', 'abc'], ['--tester-port', '7333 '], ['--tester-port', '7333\n'],`
+- `packages/webui/tests/service.test.mjs:153`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `['--port', '7444', '--tester-port', '7444'],`
+- `packages/webui/tests/service.test.mjs:154`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `['--tester-port', '7444', '--port', '7444'],`
+- `packages/webui/tests/service.test.mjs:164`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `assert.equal((await run(dir, ['render', '--tester-port'])).status, 4);`
+- `packages/webui/tests/service.test.mjs:172`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `const six = await run(dir, ['render', '--tester-port', '007333']);`
+- `packages/webui/tests/service.test.mjs:175`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `assert.equal(six.stderr, 'webui-service: --tester-port must be 1024..65535, different from --port and never 7332: 007333\n');`
+- `packages/webui/tests/service.test.mjs:176`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `const five = await run(dir, ['render', '--tester-port', '07333']);`
+- `packages/webui/tests/service.test.mjs:178`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `assert.ok(execStart(five.stdout).endsWith(' --tester-port 07333'), execStart(five.stdout));`
+- `packages/webui/tests/service.test.mjs:186`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `const installed = await run(dir, ['install', ...INSTALL, '--dir', unitDir, '--no-reload', '--port', String(port), '--tester-port', '1024', ...PREVIEW, '--send'], bin);`
+- `packages/webui/tests/service.test.mjs:188`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `assert.match(installed.stdout, /^serve: .* --tester-port 1024( |$)/m);`
+- `packages/webui/tests/service.test.mjs:189`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `assert.match(execStart(readFileSync(join(unitDir, 'mosaic-webui.service'), 'utf8')), / --tester-port 1024( |$)/);`
+- `packages/webui/tests/service.test.mjs:199`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `const refused = await run(dir, [verb, '--dir', unitDir, '--tester-port', '7333'], bin);`
+- `packages/webui/tests/service.test.mjs:799`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `const r = await run(dir, ['install', ...INSTALL, '--dir', unitDir, '--no-reload', '--port', String(port), ...PREVIEW, '--send', '--tester-port', '1024', '--proof-header', 'x-console-proof', '--proof-file', file], bin);`
+- `packages/webui/tests/service.test.mjs:813`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `const both=await run(dir,['render','--tester-socket','--tester-port','7333']);`
+- `packages/webui/tests/tester-cli.test.mjs:25`: Explicit current-CLI negative calls; brief step 5. Text: `for (const flags of [['--tester-port', '7332'], ['--port', '7444', '--tester-port', '7444'], ['--tester-port', '7444', '--port', '7444'], ...['1023', '65536', '1.5', '-1', 'nope'].map(p => ['--tester-port', p])]) {`
+- `scripts/case1-accept.sh:71`: New explicit migration refusal for saved old arguments. Text: `--tester-port) refuse "case1-accept.sh retires tester TCP; use --tester-socket" ;;`
+- `scripts/case2-unit.sh:215`: New explicit migration refusal before rendering units. Text: `--tester-port) die "case2-unit.sh retires tester TCP; use --tester-socket" ;;`
+- `scripts/instance.sh:114`: Legacy installed-unit port inventory/parser retained by brief step 5. Text: `# this instance's, whose ExecStart takes PORT as --port or --tester-port.`
+- `scripts/instance.sh:132`: Legacy installed-unit port inventory/parser retained by brief step 5. Text: `--tester-port) [[ "$tok" =~ ^[0-9]{1,5}$ ]] && ports+=("$((10#$tok))") ;;`
+- `scripts/stack-release.sh:47`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `stack-release.sh activate ID BUSINESS [--pm | --pm-after-harness] [--migrate] [--tester-socket | --tester-port N (legacy copies)]`
+- `scripts/stack-release.sh:63`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `activate and rollback --plan take --expect-from OLD. --pm, --pm-after-harness, --tester-port, the`
+- `scripts/stack-release.sh:126`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `--tester-port) [ "$OP" = activate ] && [ $# -ge 2 ] && [ -n "$2" ] || usage; TESTER_PORT="$2"; shift 2 ;;`
+- `scripts/stack-release.sh:797`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `elif grep -q -- '--tester-port' "$cli"; then supported=1; fi`
+- `scripts/stack-release.sh:800`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `--tester-port) i=$((i + 1)); inherited="${BASE_CONSOLE[i]:-}" ;;`
+- `scripts/stack-release.sh:814`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `[ -z "$inherited" ] || DROP_TESTER="--tester-port $inherited (replaced by private Unix socket)"`
+- `scripts/stack-release.sh:830`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `check_refuse tester-port-invalid "--tester-port $TESTER_PORT is not a whole port from 1024 to 65535 other than 7332$other"`
+- `scripts/stack-release.sh:832`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `[ "$supported" = 1 ] || check_refuse tester-port-target "$TO's Console does not support --tester-port"`
+- `scripts/stack-release.sh:833`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `RUN_CONSOLE=("${without_tester[@]}" --tester-port "$TESTER_PORT")`
+- `scripts/stack-release.sh:837`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `RUN_CONSOLE=("${without_tester[@]}") DROP_TESTER="--tester-port $inherited"`
+- `scripts/stack-release.sh:878`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `# --send and --tester-port follow the pointer, so a --no-send or a tester port set after that`
+- `scripts/stack-release.sh:885`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `--tester-port) i=$((i + 1)) ;;`
+- `scripts/stack-release.sh:893`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `--tester-port) i=$((i + 1)); BASE_CONSOLE+=(--tester-port "${P_CONSOLE[i]:-}") ;;`
+- `scripts/stack-release.sh:897`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `SSO_PLAN="sso: dropped; $TO's Console does not support --sso, so the rollback takes the Console flags from $set/$f, with --send and --tester-port as the pointer has them"`
+- `scripts/stack-release.sh:903`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `# --tester-port. Sets SSO_DROP (the plan's dropped preview flags), PROOF_PLAN and PROOF_STEP.`
+- `scripts/stack-release.sh:919`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `case "${kept[i]}" in --send | --tester-port | --tester-socket) break ;; esac`
+- `scripts/stack-release.sh:1076`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `case "${without_proof[i]}" in --send | --tester-port | --tester-socket) break ;; esac`
+- `scripts/stack-release.sh:1134`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `# Row 190: the target Console's --port (7332 when absent) and --tester-port against every other`
+- `scripts/stack-release.sh:1142`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `--tester-port) ports+=("${RUN_CONSOLE[i + 1]:-}") ;;`
+- `scripts/stack-release.sh:2106`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `for ((i = 0; i < ${#P_CONSOLE[@]}; i++)); do [ "${P_CONSOLE[i]}" != --tester-port ] || reserved+=("${P_CONSOLE[i + 1]:-}"); done`
+- `scripts/webui-service.sh:43`: Legacy unit renderer/parser and port inventory retained by brief step 5. Text: `# Console), --tester-socket (private Unix tester), or legacy --tester-port N`
+- `scripts/webui-service.sh:74`: Legacy unit renderer/parser and port inventory retained by brief step 5. Text: `# --tester-port that another installed Console unit in the unit directory`
+- `scripts/webui-service.sh:96`: Legacy unit renderer/parser and port inventory retained by brief step 5. Text: `FLAGS: [--port N] [--business ID] [--board URL] [--sso [--send] | --public-host NAME --auth-header HEADER --allow-user ID [--send]] [--tester-socket | --tester-port N (legacy copies)] [--proof-header NAME --proof-file PATH]`
+- `scripts/webui-service.sh:97`: Legacy unit renderer/parser and port inventory retained by brief step 5. Text: `--tester-port: legacy copies only; 1024..65535, different from --port and never 7332; loopback tester listener.`
+- `scripts/webui-service.sh:137`: Legacy unit renderer/parser and port inventory retained by brief step 5. Text: `--tester-port) [ $# -ge 2 ] || usage; TESTER_PORT="$2"; TESTER_SET=1; SERVE_SET=1; shift 2 ;;`
+- `scripts/webui-service.sh:182`: Legacy unit renderer/parser and port inventory retained by brief step 5. Text: `echo "webui-service: --tester-port must be 1024..65535, different from --port and never 7332: $TESTER_PORT" >&2`
+- `scripts/webui-service.sh:266`: Legacy unit renderer/parser and port inventory retained by brief step 5. Text: `[ "$TESTER_SET" = 0 ] || flags="$flags --tester-port $TESTER_PORT"`
+- `scripts/webui-service.sh:462`: Legacy unit renderer/parser and port inventory retained by brief step 5. Text: `if grep -Eq '^ExecStart=.*( --allow-user [^ ][^ ]*( --proof-header [^ ]+ --proof-file /[^ ]+)?| --sso) --send( --tester-port [0-9]+| --tester-socket)?$' "$target"; then`
+- `scripts/webui-service.sh:467`: Legacy unit renderer/parser and port inventory retained by brief step 5. Text: `if grep -Eq '^ExecStart=.* --sso( --send)?( --tester-port [0-9]+)?$' "$target"; then`
+- `scripts/webui-service.sh:471`: Legacy unit renderer/parser and port inventory retained by brief step 5. Text: `tester_port="$(sed -n 's/^ExecStart=.* --tester-port \([0-9][0-9]*\)$/\1/p' "$target")"`
+
+Sage-2191 accepted the requested scope and queued it behind the re-pin, 194, 202 and 254 windows. No CLEAR yet. TMPDIR will be created with `mktemp -d /mnt/storage/scratch/tmp/gXXXXXX`. STATIC.json records final syntax/diff results; no behavioral tests have run. No product commit or push has been made before the applicable suites pass.
+
+Grant sage-2279 run1: both intended RED cases observed. First installer GREEN file 35/1 in 17.231 s: EEXIST in the pre-existing outside-secrets test because the shared hub now creates dataRoot. Changed only that mkdir to recursive; its refusal assertion stays unchanged. No product bytes changed. Recorded old/new test SHA in run1/fixture-fix.json. Harness now explicitly selects TAP for machine counts and supports GREEN-only resume. This is the first unexpected failure; a second ends the window.
+
+Grant sage-2279 run1 ended on unexpected failure 2, reported to Sage and Mos as gander-0073, slot returned 2026-10-22T00:34:10Z. Acceptance whole 27/1 in 41.962 s: the broad new od fake intercepted F3 random-token generation as well as the ELF header read. Narrowed only that fake to -An -tx1 -N4; all other calls exec /usr/bin/od. The 12-hex assertion stays unchanged. Product blobs have not changed during the window. No tests run after the stop, and no checks/full suites/shell files started. run1/SUMMARY.json sums all raw logs; sweep count 0. Need a new CLEAR before any rerun.
+
+Sage-2287 approves both test-only fixture fixes and requests their commit with unchanged assertions. Commit contains the two prepared row253 test files and packet, including both old/new test SHA pairs and raw run1 results. Product scripts, README and root BUILD-LOG remain uncommitted. PORT-AUDIT.md/json refresh current line numbers after the od fake grew two lines. The earlier audit above describes the pre-fix candidate. Next CLEAR scope: both whole touched files, M1-M33, cli and webui whole and ten shell scripts. Intended RED carries under unchanged product bytes; no further test has run.
+
+## C4 static gap and addendum
+
+Grant sage-2297: installer whole36/0 in16.449s, acceptance whole28/0 in37.550s, M1-M33 killed33/33 (bases11.808s, changed runs41.202s), CLI whole755/0 in597.084s. Webui was deliberately interrupted after4.736s for a static C4 gap; it is not a failed test under sage-2307 item5 and has no completed total. Ten shells never started. Slot returned with sweep0 as gander-0076. run2/SUMMARY.json is script-summed from the preserved results and raw logs.
+
+The current outer GNU timeout kills its own group, but sudo(8) Process model documents a pty monitor creating a different terminal session. Signal handling says SIGKILL cannot be relayed. The exec fake does not cover that path. No host experiment ran. Duckworth-0109/0110 at2c49dd80c confirms the static gap. DESIGN.md remains unchanged; DESIGN-C4.md proposes the after-uid supervisor and independent outer bound, states the stalled-supervisor residual, compares runtime options and records the old talk watchdog as a proposed bounded follow-up.
+
+Sage-2307/2312 authorizes writing the fake and addendum without tests. The shared case-sudo-fixture.mjs is now imported by both host-script tests. It preserves exec mode and offers a parent/setsid/catchable-signal hop mode with PID/SID records. A new installer counterexample blocks a TERM/HUP-resistant copy under both modes and checks session/PID cleanup; its explicit fixture cleanup only kills recorded fixture PIDs. This draft fake has not run, and no syntax execution is claimed for it. The two script product blobs remain exactly the granted bytes; test bytes now differ for the draft counterexample and shared seam. No repair is implemented.
+
+The next action is Duckworth's static ruling on DESIGN-C4.md and the fake commit, not a test run. If product changes, the completed gate results are historical only and the whole gate reruns on Sage's next CLEAR. C4 now means killed at the inner bound and root never waits past the outer bound; a stopped/killed supervisor and setsid escape remain the same-uid residual. No root cross-session killer is proposed.
+
+For the static pass, c4/*.sh.txt are non-executable snapshots of the exact granted product source. FROZEN-PRODUCT.json pins their equality to the uncommitted source blobs. They are review records, not an implemented repair or a product commit.
+
+## C4 repair prepared for static review
+
+Duckworth-0111 approves DESIGN-C4.md with C1-C5. The repaired scripts now contain the same inline supervisor payload after the uid drop. It uses fixed validated system binaries, starts a query session without setsid -f/-w, confirms SID equals the child PID from the kernel, reads whole stat files, scans every process group in that session, and reaps its direct child. Query bounds are inner 5 s / outer 7 s; peer bounds are 2 s / 4 s. Separate trusted timeout notices distinguish the outer refusal from a child exit status. Both headers name the bounds and tools.
+
+The shared fake retains exec mode and a separate-session parent mode. Exact inner, outer and output-limit reasons are asserted in both modes. The setpgid child has a comm containing a closing parenthesis, space and newline. Session cleanup checks all members of recorded self-led sessions as well as exact recorded PIDs; exec mode never scans the runner's session. Every fixture cleanup kill checks the recorded SID against the kernel immediately before signalling. The stalled-supervisor case deliberately records the same-uid residual, refuses without using stdout, and performs explicit fixture cleanup. The outer timing slack is 2 s. The post-return polling budget remains 50 x 10 ms.
+
+M1-M33 were retargeted where the repair changed source, with M34-M39 for absent inner/outer supervision, group-only cleanup, unbounded read, dropped setsid and one-copy payload drift. All 39 target strings occur exactly once in a static byte check. These are proposed checks, not kill results. The old runs remain historical evidence only: product bytes changed, so the entire gate must rerun on Sage's next CLEAR after the short static pass. No repaired-source syntax check, test, probe or host experiment has run. git diff --check reports no whitespace errors.
+
+F5 now names row 276 / #1781 in docs/plans/DEFERRED.md (sage-2331). That path will be in the row253 manifest. c4/UPSTREAM-PATHS.json records the requested 968db0bcd..ddfb29af7 comparison and the branch-base comparison. Only DEFERRED.md overlaps upstream since c3d88840c; its current upstream text was preserved before appending this row's entry. The branch-to-refactor comparison also lists the unlanded test files on our side. No rebase was performed.
+
+c4/REPAIR.diff, *.repair.txt and REPAIR-SHAS.json freeze the complete repair for Duckworth's C1/C3/C5 static look. The original c4/*.sh.txt and FROZEN-PRODUCT.json stay unchanged. The runnable product and test files remain uncommitted pending the applicable gate; this packet commit is records only. No node_modules path is included.
+
+2026-10-22 02:13:30 UTC: sage-2335 publishes b64aa316a and explicitly requires a committed runnable candidate before the gate. Accordingly the seven repaired source/test/doc paths, the existing BUILD-LOG append and this record are committed now. All seven bytes still match c4/REPAIR-SHAS.json; this commit changes no reviewed packet source. CANDIDATE-SHAS.json is refreshed for the new gate. MANIFEST.sha256 covers the eight product/test/doc/log paths, including DEFERRED.md. No repaired-source verification ran; the static verdict and CLEAR remain pending, and all old results are historical only.
+
+## duckworth-0112 delta, no runs
+
+B1: both supervisor copies use fork-free IFS= read -r -d '' with content-based EOF/error handling. The 250 ms confirmation budget starts after the first full inventory pass. A deterministic stand-in clock test pins this placement without wall timing or real signals; M40 moves the budget back before pass one. All 40 proposed targets statically occur once. No test or syntax execution ran.
+
+M1: BUILD-LOG.md is removed from MANIFEST.sha256. Its row253 phase lines land as a separate doc-only append after code, preserving newer upstream lines, under sage-2342. The manifest now has seven entries. The initial eight-entry manifest is superseded.
+
+N4: SID confirmation now waits within the existing inner watchdog budget rather than only 100 sleeps. It still refuses a vanished/unreadable child or unconfirmed session, and the independent outer bound remains. N1/N2 are explicitly deferred in the existing F5 entry to row276 / #1781, as Sage rules. No case1 analogue checks were added in this delta.
+
+The required gate base is the refactor tip Sage names at CLEAR, 378a76b85 or later. This delta is prepared on the current seat branch for static review only; no old-base gate is authorized. The final integrated gate candidate will get fresh hashes and integration records before execution. c4/delta-0112/ freezes the seven source/test/doc paths, the delta from aa81ca390, and static uniqueness. Prior frozen packets remain unchanged.
+
+Duckworth-0113 approves 761893dac after git reads only (8d3fa3f20). B1 and M1 are closed; real timing remains unverified until the gate. N5 is harmless diagnostic noise on a vanished stat entry: the input redirection can report before stderr is redirected, and tester_capture discards supervisor stderr. No source change is made for it. N6 is recorded with R3: if the inner watchdog expires before kernel SID confirmation, finish has only the known child PID and kills that PID, not an unverified session. Other members may remain. Root still refuses, discards stdout and waits only within the outer bound. This is an explicit limit of cleanup before session identity is established, not a claim that the session was swept. The independent outer bound does not prove cross-session cleanup. Source/test bytes and the seven-entry manifest remain exactly those approved at 761893dac.
@@ -0,0 +1,9 @@
+{
+  "scripts/case2-unit.sh": "d7670bdb049ae41ba3774fc83de633636859b6723be858cfb31ea106b0e8812b",
+  "scripts/case1-accept.sh": "c02bef6b3495e5a4548d7b4e89675ed52be26a0c9ccce4d9d5cfc5fe2ce437bd",
+  "packages/cli/tests/case-sudo-fixture.mjs": "b259b8c7926e49829c8a956674021cb0cc85ddd65aebdc786d05cc08d7790008",
+  "packages/cli/tests/case2-unit.test.mjs": "1e0696eb196e83a0766b433ef71f27df0a3f8fcb6399787ab8c1c0f05c54dc44",
+  "packages/cli/tests/case1-accept.test.mjs": "6cfd2963303315aa6911c4d4f6d75d3ab87d9fcba8e128b056216e7f85fd8901",
+  "packages/webui/README.md": "2eeb1f79324f64463a9b3427e67492d672b8d1c14db6c0349c7de17d89e52fc9",
+  "docs/plans/DEFERRED.md": "3ea465cf7ed664ceb1ea4076b829f706f8480f80c4a8aaa6a7487e4eceaf318f"
+}
@@ -0,0 +1,147 @@
+# Row253 C4 addendum: the supervisor belongs after sudo
+
+Draft for Duckworth's static ruling. DESIGN.md remains unchanged. Authority:
+duckworth-0109/0110, RULING-c4.md at 2c49dd80c, and sage-2307/2312.
+No repaired product code or new test has run. Product scripts still have the
+original frozen bytes; this addendum does not claim they satisfy C4.
+
+## Finding and evidence
+
+The current tester_capture puts GNU timeout --signal=KILL outside sudo, then
+kills that timeout's process group. It works for the exec-style sudo fake.
+sudo(8), **Process model**, says the pty monitor creates a new terminal session
+and forks the command there. **Signal handling** (called Signals in the local
+rendering) says SIGKILL cannot be caught and relayed. Therefore an outer group
+kill does not establish that the query in the new session is killed.
+
+Evidence was a static read of the installed sudo(8)/sudoers(5) documentation,
+then Duckworth's independent ruling against sudo 1.9.17p2. No real sudo, host
+experiment, live unit or live-port experiment ran. The shared fake below is
+written but unrun. It models the session boundary, not authentication or a pty.
+
+## Proposed trusted supervisor and runtime trade
+
+Recommend a reviewed inline Bash supervisor, run **after the uid drop**, using
+root-validated fixed system Bash, setsid, sleep and kill/builtins. These are
+host tools, never binaries or scripts from the selected copy. Resolve system
+symlinks to their real targets; require executable root-owned ELF files and
+safe root-owned ancestors, outside homes. Do not use PATH lookup for these
+supervisor tools. env -i removes BASH_ENV and other injected runtime settings.
+Add setsid to the documented host dependencies. No new configuration knob.
+
+This is a proposal under R1's root-validated system-binary option, pending
+Duckworth's approval of Bash rather than the example GNU timeout. The exact
+inline supervisor must be identical in both host scripts, with budgets and
+command argv passed separately. No helper is imported from the copy.
+
+Alternatives weighed:
+
+- GNU timeout alone inside sudo fixes the session hop but kills one process
+  group. It misses a grandchild that uses setpgid without setsid. It needs the
+  same owned-session cleanup as the proposed supervisor.
+- Validated --node with inline builtins can implement the same supervisor.
+  The installer already validates it. Acceptance deliberately reports unsafe
+  --node paths through F9/F10; making that binary a required trusted supervisor
+  would change those existing outcomes or need another pinned runtime.
+- Fixed root-validated system Python can fork a session, multiplex bounded
+  output and scan /proc cleanly. It is already used for P10, but making it
+  mandatory for the config query changes missing/unsafe Python from a failed
+  P10 observation into a preflight refusal. Preserve that behavior here.
+
+## R1: own a query session, not sudo's group
+
+The supervisor starts in sudo's possibly separate session as the stack uid.
+It forks the query child, then setsid occurs in that child through the fixed
+system setsid binary. The supervisor itself may already be a group leader,
+so it must not attempt setsid in its own process. Disable Bash job control;
+the newly forked child is not a group leader, so setsid need not fork again.
+The child's PID from $! is the kernel session id. No PID comes from copy output.
+
+Run a separate five-second watchdog inside the uid boundary. On expiry, on a
+supervisor catchable signal, on output refusal, and after normal query exit:
+
+1. Scan numeric /proc/*/stat entries for the owned session id. Parse after the
+   final closing parenthesis, so spaces, parentheses and newlines in comm do
+   not shift the kernel fields. Use the kernel session field, not ancestry.
+2. SIGKILL every live PID in that session, including different process groups.
+   Repeat until no running members remain or a fixed 250 ms cleanup budget
+   expires. Never select a process from a different session.
+3. Wait for the direct child and the watchdog. Refuse on a cleanup limit or
+   read/parse error that prevents establishing cleanup. Zombies are not running;
+   only direct children can be reaped here. Tests pin that distinction.
+
+A five-second deadline concerns the inner query. The root-side deadline is
+independent. Query bytes are accepted only after success and completed cleanup.
+The query can never authorize a root kill: its stdout supplies no PID/session.
+The supervisor runs without root authority and kills only its owned session.
+
+## R2: independent root bound and bounded output
+
+Root waits at most seven seconds for the metadata sudo call. Keep GNU timeout
+outside sudo for this separate purpose. Keep the 4096-byte cap plus one-byte
+overflow detection. All partial output is discarded on any refusal.
+
+Give outer timeout its own operator reason, distinct from inner timeout,
+child failure, output limit and cleanup refusal. A child-supplied exit value
+alone must not masquerade as proof the outer timer fired. Capture GNU timeout's
+trusted verbose signal notice separately, with sudo/helper stderr redirected
+away from that channel. The root-owned notice file is outside the user's
+home. Validate the combination of notice and status; no eval or source.
+
+Apply the same primitive to the new P10 peer probe, with inner two seconds,
+outer four seconds, a 128-byte output cap and the existing one-second socket
+connect timeout. Preserve its fixed system-Python safety check and failed-P10
+behavior. All observed stdout still requires successful cleanup and exact
+pid/uid/gid validation. Neither path sends application bytes to the socket.
+
+## R3: narrowed claim and residual
+
+C4 now means: killed at the inner bound, and root never waits past the outer
+bound. A hostile same-uid query can kill/stop the supervisor or setsid away.
+A hang in the trusted supervisor has the same outer-bound outcome. In that
+case root refuses and discards stdout; the separate session may remain.
+This is the existing DESIGN.md:97-99 same-uid limit, not a new closure claim.
+No root-side cross-session killer is added. It would require another row.
+
+The stalled-supervisor fake must prove outer timing, its own refusal reason
+and no use of partial stdout. It then explicitly kills its recorded leftover
+session as fixture cleanup, naming that step as the R3 residual. It must not
+claim the product cleaned that session. Other normal-supervisor cases assert
+no running members of the recorded query session remain after the call.
+
+## R4 and F5: headers and remaining legacy calls
+
+Both headers will name the inner supervisor, its runtime/tool validation,
+five/seven-second query bounds and two/four-second peer-probe bounds.
+
+The old F3 talk path (currently timeout 330 around AS_USER talk) has the same
+sudo session-hop issue. Propose recording it as a bounded follow-up, rather
+than changing it in this slice: it predates the socket metadata/probe helpers,
+drives a 300-second functional conversation and simultaneous F5 scan, and has
+existing stdout/stderr diagnostics. It is not part of the new five-second
+config query. This is an explicit F5 scope choice for Duckworth/Sage to accept
+or reject, not a claim the old talk timer kills a separate session. Likewise,
+the other legacy AS_USER diagnostics are not newly supervised by this row.
+
+## Shared fake and next evidence
+
+packages/cli/tests/case-sudo-fixture.mjs provides the one process-model seam.
+Both existing test files import it. Mode exec retains the prior fake. Mode
+hop keeps a parent, forks through setsid, records kernel PID and SID, and
+relays TERM/HUP/INT only. It cannot relay KILL. The installer draft case makes
+the copy ignore TERM/HUP and block; it checks recorded query PIDs and the
+separate fake session, then explicitly cleans fixture-owned PIDs on failure.
+This is written but not run, and is expected to expose the old product gap.
+
+Before the next whole gate, complete both-mode cases for timeout, TERM/HUP,
+setpgid grandchild, overflow, and the distinct stalled-supervisor residual.
+Both host-script paths use this seam. Add changes for absent inner supervisor,
+absent outer bound, leader-group-only cleanup and unbounded read. The setpgid
+case must kill the group-only change. Record every restore and raw log.
+
+Duckworth reviews this addendum and fake statically first. Product code then
+implements the approved mechanism. All product changes void prior results
+under sage-2307/mos-1200. Only Sage's next CLEAR permits a diagnostic or gate
+run. The next gate is both whole touched files, all checks, CLI/WebUI whole
+and all ten shell files. Existing RED evidence carries only if applicable
+product bytes remain equal. No host deployment is authorized by this packet.
@@ -0,0 +1,248 @@
+# Row 253: private tester socket in the host scripts
+
+Gander, 2026-10-21. F27, #1758. Base c3d88840c, after row196 landing
+7247d80c7. Brief: docs/plans/2026-10-21_tester-socket-scripts.md at
+0cdead66c. Reviewer Duckworth; gate owner Sage. Status: proposed, no product
+code or tests changed. Claim gander-253-start is queue rev2995.
+
+## Outcome and scope
+
+The factory installer renders a bare --tester-socket flag instead of a TCP
+port. Case1 acceptance consumes that saved form and examines the private
+listener without claiming that a private pathname defeats hostile same-uid
+processes. The library profile still has no tester. No .53 or .54 host may
+take a copy carrying196 before253 lands, per mos-1198.
+
+Change scripts/case2-unit.sh, scripts/case1-accept.sh and their two existing
+CLI test files. Their comments/usage and fixture docs move with the code.
+Do not edit the deliberate legacy paths named in the brief. No runtime bus,
+Console, role, grant, control-board, dependency or systemd-template change.
+No live installer or acceptance run, provider, home/config, unit or host access.
+
+## Choices
+
+1. Recommended: resolve the configured dataRoot as the stack user, preserve
+   hardening, check the final pathname's metadata and use SO_PEERCRED on a
+   connection to identify its listener. This supports custom roots within the
+   unit's existing writable home and matches196's kernel-peer approach.
+2. Assume <home>/.mosaic-dev and inspect a pathname in /proc/net/unix. This
+   misses a custom config and is not a reliable final-path ownership check:
+   196 binds a temporary name and renames it. A socket's filesystem inode also
+   must not be confused with its kernel socket inode. Do not use this option.
+3. Add a TCP relay, relax hardening or give acceptance a configurable probe
+   executable. All widen the surface or trust inputs and are outside this row.
+
+There is no second bus principal verifier. The acceptance probe observes an
+OS endpoint; it grants no capability and sends no HTTP or bus request.
+
+## Installer arguments and preflight
+
+Factory keeps required --port (1..1023) and --business; tester remains optional
+for the installer. --tester-socket is a single marker, takes no value and keeps
+its position in the rendered flags. The existing duplicate-flag check applies.
+A following stray value is an unknown flag. --tester-port always refuses in
+serve arguments, for both profiles, before unit writes or systemctl actions:
+
+    case2-unit: case2-unit.sh retires tester TCP; use --tester-socket
+
+Library rejects --tester-socket with an explicit library-profile refusal. Its
+other flags, proof-file checks and install behavior are unchanged. No legacy
+conversion or fallback to TCP is introduced in this installer.
+
+When the factory socket marker is present, a small inline metadata query runs
+the selected copy's config loader under the target uid with sudo -u USER -H,
+env -i, explicit HOME and the same pinned-node-first PATH used by the unit.
+Root never imports user-writable copy code as root. It invokes the previously
+validated --node path after dropping uid, with the copy module path as a
+separate argument. This resolves the default instance just as the rendered
+unit does; no MOSAIC_CONFIG or named-instance override is inherited.
+
+The query returns only dataRoot and whether that copy's Console carries the
+MOSAIC_TESTER_SOCKET_V1 marker. It prints no config values, credentials or child
+diagnostics. Bound it to five seconds and 4096 output bytes; reject errors,
+extra output/keys, malformed results, missing config and unsupported targets.
+No root process opens a config or credential under the user's home. Existing
+root metadata checks remain root metadata checks. Both script headers explain
+the new, explicitly unprivileged config query.
+
+Before any unit writes, validate the socket location:
+
+- dataRoot is an absolute normalized plain path, below the declared home,
+  with no symlink in its existing path. Never expand the unit's writable scope.
+- Neither home nor dataRoot is under /home, /root, /run/user, /tmp or /var/tmp.
+  These roots conflict with the existing ProtectHome/PrivateTmp contract.
+- <dataRoot>/console/tester.sock is at most 107 ASCII bytes, matching196.
+- A missing console parent is allowed; runtime creates it. An existing parent
+  must be a real directory, not a symlink, owned by the target uid with no
+  group/other permissions. A foreign owner, non-directory or unsafe mode refuses.
+- Do not create/chmod the parent or inspect/delete an existing tester entry in
+  the installer. A running Console may own it during a re-pin. Runtime196 owns
+  binding and cleanup. Reinstall still does not restart running units.
+
+The dataRoot query and all refusal families get fake-only tests. A failed
+preflight leaves both units and the systemctl log unchanged.
+
+## How the rendered unit reaches the socket
+
+The unit still has User/Group for the stack account, ProtectSystem=strict,
+ReadWritePaths=<home>, ProtectHome=yes and PrivateTmp=yes, in the same order.
+Its ExecStart contains --tester-socket, with no pathname argument. The Console
+loads dataRoot and derives console/tester.sock itself. Case1/2's /srv/mosaic
+home is outside ProtectHome's protected hierarchies; the allowed dataRoot is
+inside the existing writable home, and the socket is outside private /tmp.
+No extra capability or writable directory is added. Systemd's documented
+namespace rules motivate the location refusals, rather than a hardening change.
+[systemd.exec](https://www.freedesktop.org/software/systemd/man/latest/systemd.exec.html)
+
+A mutable same-uid config can change between preflight and start. The unit's
+writable boundary is still home; runtime's own config/socket checks still
+refuse unsafe state. This row does not promise an immutable same-uid config.
+The host window must verify the rendered unit actually starts under its
+namespace; scratch tests inspect its directives, not a real systemd namespace.
+
+## Acceptance arguments and endpoint observation
+
+The saved args must contain one --tester-socket and the numeric --port.
+Reject a missing/duplicate marker, a marker with an old numeric value, and
+--tester-port with the same migration wording naming case1-accept.sh. Preserve
+all existing pre-- argument validation and the default-instance contract.
+Malformed saved inputs still refuse with exit2 before functional checks.
+
+Acceptance resolves the actual configured tester dataRoot with the same
+unprivileged, bounded query. It does not silently use the default path. An
+unreadable/invalid config or a root outside the unit's allowed home refuses
+before the functional talk. The old DATA_ROOT used by F11 remains unchanged;
+generalizing that separate Discord check is outside this row.
+
+P10 independently requires the Console's systemd MainPID to be positive and
+stable, and its four /proc uid fields to be the stack uid. Check the private
+parent's type, owner and mode, and the final entry's non-symlink socket type,
+owner and exact 0600 mode. Snapshot parent/socket dev+ino and metadata before
+and after the peer probe; a replacement or MainPID change fails observation.
+The port floor must still be numeric and above the privileged main Console
+port, retaining that existing part of the observation.
+
+The bounded probe runs as the stack user with an empty inherited environment,
+the fixed system /usr/bin/python3 resolved to a root-owned ELF, safe root-owned
+ancestors, and -I -S. This is the system Python dependency already required by
+196; never use PATH python, a home shim or a configurable helper. Unsafe/missing
+Python is a failed P10 observation, not a fallback. Resolve/check the system
+entry and target using metadata and the ELF header; do not run copy Python code
+as root. Test seams emulate these root facts and the system executable.
+
+The probe opens AF_UNIX/SOCK_STREAM, uses a one-second connect timeout, reads
+SO_PEERCRED and closes. An outer three-second process-group bound applies. It
+returns only pid/uid/gid, with exact structure, bounded output and numeric
+validation. pid must equal MainPID and uid the stack uid; gid is validated but
+not an identity grant. No application bytes, cookies, credentials or proof
+envelope are sent. Linux supplies the peer credentials for the connected
+stream, so the check does not depend on the temporary bind pathname.
+[unix(7), SO_PEERCRED](https://man7.org/linux/man-pages/man7/unix.7.html)
+
+This is a snapshot. Hostile same-uid processes can alter same-uid state or
+interfere with the unprivileged probe. Root, ptrace and later pathname changes
+are not defeated here. The probe does not prove another uid is denied; that
+remains a host-window observation, not a fake test claim.
+
+## P8 and P10 outcome lines
+
+P8 must change with removal of TESTER_PORT. It checks the main Console port is
+loopback-only and held only by MainPID, and that nothing listens on TCP7331 or
+the retired TCP7333. Socket ownership belongs to P10. Its healthy line is:
+
+    P8 lan-listeners closed <port> is on 127.0.0.1 only by MainPID <pid>; no TCP listener on 7331 or 7333; tester uses <socket>
+
+An unexpected listener, missing main listener or wrong owner produces P8
+lan-listeners unnamed with the observed listener summaries, as today.
+
+Do not reuse accepted mos-1101 for a new Unix-socket claim: that ruling named a
+TCP-port condition. Proposed safe default pending any new Mos classification:
+
+    P10 tester-socket-squat unnamed boundary=observed path=<socket> parent=0700 owner=<uid> socket=0600 peer_pid=<pid> peer_uid=<uid> floor=<floor> port=<port>; hostile same-uid substitution remains
+
+Any missing/unsafe metadata, wrong peer, unsafe interpreter, malformed/timeout
+probe, floor miss or changed snapshot produces one P10 line instead:
+
+    P10 tester-socket-squat unnamed boundary=failed reason=<bounded-code> path=<socket> MainPID=<pid>; hostile same-uid substitution remains
+
+Healthy observation does not mark the same-uid squat path closed or invent an
+accepted ruling. P checks still never change exit status. Tests pin the reason
+and observed/failed distinction, so validation cannot disappear behind an
+always-unnamed mark. Sage/Mos may supply a new classification at design review;
+it must be explicit before changing this proposed mark. No Jason question is
+needed merely to retain unnamed evidence.
+
+## Evidence and planned checks
+
+Keep the existing scratch fixtures, fake account database/systemctl/curl/ss/
+sudo/stat and fake interpreter. Add copy config/marker fixtures and probe
+metadata under those same roots. No test connects to a live socket or runs the
+real host scripts without their existing seams. Fixture fakes verify the
+unprivileged command argv; no test claims a real uid drop or namespace.
+The fake system interpreter executes the actual probe payload against a fake
+Python socket API, checking AF_UNIX/SOCK_STREAM, timeout, connect, getsockopt
+arguments and returned peer bytes. This catches errors in the inline probe
+without opening an OS listener. The metadata query is tested with nonzero
+status plus valid-looking output as well as malformed output, so removing its
+status refusal cannot hide behind a later parse error.
+
+| Checks | Required observations |
+|---|---|
+| T1 factory render | Bare marker exactly once, argument order retained, no TCP flag, hardening unchanged; duplicate/stray value refuses |
+| T2 profile/migration | Both profiles refuse retired TCP; library refuses socket; all refuse before writes/start |
+| T3 config/target | Invalid/missing/noisy/timed-out metadata and unmarked target refuse; query uses target uid and clean environment |
+| T4 location | Default and custom in-home roots work; outside-home, protected/private hierarchies, symlinks and >107-byte pathname refuse |
+| T5 parent | Missing parent allowed; file/symlink/foreign owner/group-other mode refuse without mutation or systemctl calls |
+| T6 saved args | Required socket marker; missing/duplicate/stray value and retired TCP refuse exit2 before talk |
+| T7 P8 | Main-only loopback succeeds; LAN/wrong owner/7331 or7333 listener gives unnamed |
+| T8 P10 | Exact metadata, stable MainPID and matching peer produce boundary=observed; custom configured root used |
+| T9 failed P10 | Parent/socket faults, wrong PID/uid, malformed/timeout probe, unsafe Python, bad floor and changed snapshot each give failed reason |
+| T10 preserved behavior | Functional checks, their exit semantics, library behavior and all other P paths retained |
+
+Planned checks to kill, one target change at a time in isolated snapshots:
+
+| IDs | Removed requirement |
+|---|---|
+| M1-M3 | Installer TCP refusal, library socket refusal, duplicate socket refusal |
+| M4-M5 | Config-query failure refusal, unsupported-target refusal |
+| M6-M8 | Home containment, protected/private path refusal,107-byte limit |
+| M9-M11 | Existing parent type/symlink, uid, mode checks |
+| M12-M15 | Acceptance TCP refusal, required marker, duplicate/stray marker rejection, config-query refusal |
+| M16 | P8 retired TCP7333 check |
+| M17-M18 | P10 parent and final socket metadata checks |
+| M19-M21 | Peer PID, peer uid, malformed/timeout probe refusal |
+| M22-M23 | Safe fixed system interpreter, stable metadata/MainPID snapshot |
+| M24-M25 | Target-uid invocation in installer and acceptance metadata/probe paths |
+| M26 | Privileged main-port floor observation |
+| M27 | Probe returns its own PID rather than the connected peer's credentials |
+
+Before execution, give every definition one unique source target and a named
+killer test. Preserve raw logs, base times, syntax preflight and byte-identical
+SHA/Git restoration. A timeout counts only under Sage's explicit rules and
+must kill the process group. Refusal variants in T1-T9 must not be merely
+assertions of a generic nonzero exit.
+
+## Static inventory and gate
+
+After implementation, enumerate every --tester-port hit in scripts/packages
+in BUILD.md and a machine-readable file. The only permitted hits are the brief's
+deliberate legacy producers/parsers/tests and this row's explicit refusals and
+negative fixtures. Inspect arguments and generated units, not just filenames.
+Readmes must describe retirement rather than produce old argv. No modification
+to webui-service, stack-release, instance, their tests/fixture, case1-hostcheck
+or tester-cli negative calls is planned. Stop and ask Sage if one is needed.
+
+Then request Sage's slot. Under that grant, run CLI whole, WebUI whole, every
+shell test suite whole and all named checks above. Use an isolated candidate,
+plain linked node_modules, a short gXXX TMPDIR under /mnt/storage/scratch/tmp,
+busy &&, pipefail and tee. Single/pattern runs need the slot too, per sage-2142.
+No harness/helper/log argument may match the busy detector pattern, per
+mos-1205. Two failures end the window; report any stop to Sage/Mos before a
+retry. Return the slot with script-summed counts/timings and a leftover sweep.
+
+Design approval precedes code. The manifest, immutable candidate hashes,
+static inventory and gate evidence go to Duckworth before Sage's landing.
+Queue moves use the helper, with a coordinated queue-write gap. Sage posts the
+jarvis review request after the in-review move. BUILD-LOG/session history stays
+append-only; Sage continues session registration. No host deployment is part
+of row253 acceptance.
@@ -0,0 +1,7 @@
+# Row253 committed C4 candidate manifest
+
+MANIFEST.sha256 names seven source/test/doc landing paths and pins their bytes. Its digest is the review identifier. BUILD-LOG.md is excluded: land the row253 phase lines as a doc-only append after the code, preserving upstream appends (duckworth-0112 M1, sage-2342).
+
+Base before the required gate integration: c3d88840c. Initial static repair packet: b64aa316a; initial runnable candidate: aa81ca390. The delta packet is c4/delta-0112/. Full records live under agents/gander/work/queue-253/ as review evidence. DEFERRED.md preserves upstream entries and names row276 / #1781 for F5 and N1/N2.
+
+Sage-2335 authorizes the runnable commit before the whole gate. No repaired-source syntax check, test, probe or host experiment has run. No results from 8a8df4171 carry. After Duckworth's delta static verdict, the gate must use the candidate integrated onto the refactor tip named by Sage at CLEAR (378a76b85 or later under sage-2342), never this old base. Fresh integration records and hashes will identify that final gate candidate.
@@ -0,0 +1,7 @@
+3ea465cf7ed664ceb1ea4076b829f706f8480f80c4a8aaa6a7487e4eceaf318f  docs/plans/DEFERRED.md
+b259b8c7926e49829c8a956674021cb0cc85ddd65aebdc786d05cc08d7790008  packages/cli/tests/case-sudo-fixture.mjs
+6cfd2963303315aa6911c4d4f6d75d3ab87d9fcba8e128b056216e7f85fd8901  packages/cli/tests/case1-accept.test.mjs
+1e0696eb196e83a0766b433ef71f27df0a3f8fcb6399787ab8c1c0f05c54dc44  packages/cli/tests/case2-unit.test.mjs
+2eeb1f79324f64463a9b3427e67492d672b8d1c14db6c0349c7de17d89e52fc9  packages/webui/README.md
+c02bef6b3495e5a4548d7b4e89675ed52be26a0c9ccce4d9d5cfc5fe2ce437bd  scripts/case1-accept.sh
+d7670bdb049ae41ba3774fc83de633636859b6723be858cfb31ea106b0e8812b  scripts/case2-unit.sh
@@ -0,0 +1,37 @@
+# Row253 implementation plan
+
+Goal: migrate the two host scripts to the private tester socket without widening
+their unit or root execution boundary. Spec: DESIGN.md, approved by
+duckworth-0100 with C1-C5; Sage2173 approves the two design decisions.
+Execution: Gander implements inline; Duckworth reviews the final manifest.
+
+Constraints: four product/test files only; no edits to the brief's legacy paths;
+no tests before Sage's slot, including patterns. Static inspection precedes the
+full slot request. All tests use the existing scratch/fake seams.
+
+- [x] Task1: write factory/acceptance socket fixture and refusal tests first.
+  Add config/marker and isolated probe fakes; assert target-uid argv, strict
+  parsing, all C1 path variants and C4 descendant cleanup. Preserve baseline
+  functional/P checks while changing only the intended socket outcomes.
+- [x] Task2: implement the marker parsing, bounded target-uid query, strict bash
+  parser, component/no-follow location checks and parent preflight in installer.
+  Preserve hardening and update its header, including sudo dependency.
+- [x] Task3: migrate saved args and P8/P10. Implement metadata snapshots and the
+  bounded isolated system-Python peer observation; keep P10 unnamed with explicit
+  observed/failed evidence and same-uid residual. Update header and remove the
+  obsolete accepted-mos-1101 mark. Keep F11 default DATA_ROOT behavior unchanged.
+- [x] Task4: static audit every remaining retired-port occurrence; prepare unique
+  M1-M33 including C1 middle-symlink/sibling-prefix, C2 character, C3 parser and C4
+  process-group checks. Request the slot once the candidate static check passes.
+- [ ] Task5: on Sage's grant, execute RED cases against isolated prior behavior,
+  GREEN candidate checks, CLI/WebUI whole, all shell files and the checks. Record
+  counts/times, clean restoration, leak sweep and exact frozen manifest. Return
+  the slot, then queue review only in a coordinated write gap.
+
+Review focus: prefix collisions; intermediate symlinks; forged output lines;
+nonzero query with valid-looking JSON; ignored signals/leftover descendants;
+kernel versus filesystem inode; wrong Console peer or metadata replacement.
+
+Ruling: tests are written first, but their execution waits for the user-required
+slot after static preparation. No pre-slot test or passing claim; RED/GREEN
+execution is an explicit part of the granted verification, not claimed in advance.
@@ -0,0 +1,768 @@
+{
+  "command": "git grep -n -- --tester-port scripts packages",
+  "hits": 127,
+  "entries": [
+    {
+      "file": "packages/cli/tests/case1-accept.test.mjs",
+      "line": 596,
+      "text": "    \"retired TCP\": [(h) => put(h.args, [...ARGS.slice(0,-1),'--tester-port','7333'].join('\\n')+'\\n',0o644), /case1-accept.sh retires tester TCP; use --tester-socket$/],",
+      "reason": "New negative saved-argument fixture asserting the migration refusal."
+    },
+    {
+      "file": "packages/cli/tests/case1-hostcheck.test.mjs",
+      "line": 68,
+      "text": "    \"[Service]\\nExecStart=/opt/mosaic-stack/node/bin/node /srv/mosaic/copies/x/packages/webui/src/cli.mjs serve --port 732 --business mosaic-stack --tester-port 7333\\n\");",
+      "reason": "Deliberate legacy hostcheck fixture; brief step 5 leaves it unchanged."
+    },
+    {
+      "file": "packages/cli/tests/case1-hostcheck.test.mjs",
+      "line": 215,
+      "text": "  put(join(h.root, \"etc\", \"systemd\", \"system\", \"mosaic-webui.service\"), \"[Service]\\nExecStart=/x serve --business mosaic-stack --tester-port 7333\\n\");",
+      "reason": "Deliberate legacy hostcheck fixture; brief step 5 leaves it unchanged."
+    },
+    {
+      "file": "packages/cli/tests/case2-unit.test.mjs",
+      "line": 445,
+      "text": "    [\"--tester-port\", \"7333\", /case2-unit.sh retires tester TCP; use --tester-socket/],",
+      "reason": "New negative factory/library fixtures asserting the migration refusal."
+    },
+    {
+      "file": "packages/cli/tests/case2-unit.test.mjs",
+      "line": 496,
+      "text": "  refuses(unit(h, { profile: \"factory\", flags: ['--port','443','--business','acme','--tester-port','7333'] }), /case2-unit.sh retires tester TCP; use --tester-socket/);",
+      "reason": "New negative factory/library fixtures asserting the migration refusal."
+    },
+    {
+      "file": "packages/cli/tests/stack-release-external.test.mjs",
+      "line": 75,
+      "text": " for(const a of [['activate',C1,'acme','--pm'],['activate',C1,'acme','--tester-port','7444'],['activate',C1,'acme','--no-proof'],['activate',C1,'acme','--no-send'],['activate',C1,'acme','--sso'],['activate',C1,'acme','--proof-header','X','--proof-file','/p'],['rollback','acme'],['gate',B,'acme'],['activate',C1,'acme','--expect-from',B],['confirm',C1,'acme','--rollback',B],['confirm',C1,'acme','--cause','A5']]){",
+      "reason": "Legacy stack-release external refusal fixture, excluded by brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release-fixture.mjs",
+      "line": 306,
+      "text": " for(const [f,text,mode] of [['scripts/mosaic',script(mosaicStub),0o755],['packages/webui/src/cli.mjs',[B,C1,C].includes(id)?`// fixture Console, never run\\n// serve accepts '--tester-port'\\n// serve accepts '--proof-header' (row 178)\\n${[C1,C].includes(id)?\"// serve accepts '--sso' (row 192)\\n\":''}`:'// fixture Console before tester listener, never run\\n',0o644],['packages/bus/src/store.mjs',store,0o644],['packages/bus/src/migrate-schema.mjs',`(${migrateStub})();\\n`,0o644],['packages/plugins/src/kinds.mjs',[C1,C].includes(id)?KINDS_NEW:KINDS_OLD,0o644],...ssoFiles(id).map(([f,text])=>[f,text,0o644])]){",
+      "reason": "Retained pre-196 copy fixture for legacy activation and rollback."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 681,
+      "text": "const testerFlags=(e,port='7333')=>['--port',e.port,'--business','acme','--tester-port',port];",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 687,
+      "text": " let r=await run(e,'activate',C1,'acme','--tester-port','7333');assert.equal(r.code,0,r.out+r.err);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 688,
+      "text": " assert.deepEqual(pointer(e).console,testerFlags(e));assert.match(consoleText(e),/--tester-port 7333(?:\\n|$)/);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 690,
+      "text": " r=await run(e,'activate',B,'acme','--tester-port','7334');assert.equal(r.code,0,r.out+r.err);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 692,
+      "text": " assert.match(consoleText(e),/--tester-port 7334(?:\\n|$)/);assert.doesNotMatch(consoleText(e),/--tester-port 7333/);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 693,
+      "text": " assert.equal((consoleText(e).match(/--tester-port/g)||[]).length,1);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 694,
+      "text": " r=await run(e,'activate',C1,'acme','--plan');assert.equal(r.code,0,r.out+r.err);assert.match(r.out,/Console: .*--tester-port 7334/);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 697,
+      "text": " assert.deepEqual(pointer(e).console,testerFlags(e,'7334'));assert.match(consoleText(e),/--tester-port 7334(?:\\n|$)/);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 702,
+      "text": " let r=await run(e,'activate',B,'acme','--tester-port','7333');assert.equal(r.code,0,r.out+r.err);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 705,
+      "text": " assert.match(r.out,/drop[^\\n]*--tester-port 7333/i);assert.doesNotMatch(r.out.split('\\n').find((l)=>l.startsWith('Console: ')),/--tester-port/);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 708,
+      "text": " assert.deepEqual(pointer(e).console,['--port',e.port,'--business','acme']);assert.doesNotMatch(consoleText(e),/--tester-port/);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 709,
+      "text": " assert.match(stepText(e),/drop[^\\n]*--tester-port 7333/i);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 714,
+      "text": " const r=await run(e,'activate',A,'acme','--tester-port','7333');assert.equal(r.code,3,r.out+r.err);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 718,
+      "text": " assert.match(readFileSync(join(repo,'packages/webui/src/cli.mjs'),'utf8'),/--tester-port/);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 724,
+      "text": "  const r=await run(e,'activate',C1,'acme','--tester-port',value);assert.equal(r.code,4,`${value}: ${r.out}${r.err}`);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 731,
+      "text": " let r=await run(e,'activate',C1,'acme','--tester-port','7333');assert.equal(r.code,0,r.out+r.err);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 732,
+      "text": " r=await run(e,'activate',A,'acme','--plan');assert.equal(r.code,0,r.out+r.err);assert.match(r.out,/drop[^\\n]*--tester-port 7333/i);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 736,
+      "text": " edit(join(e.units,CON),'--tester-port 7333','--tester-port 7334');const n=calls(e).length;",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 738,
+      "text": " edit(join(e.units,CON),'--tester-port 7334','--tester-port 7333');",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 740,
+      "text": " assert.deepEqual(pointer(e).console,['--port',e.port,'--business','acme']);assert.doesNotMatch(consoleText(e),/--tester-port/);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 741,
+      "text": " assert.match(stepText(e),/drop[^\\n]*--tester-port 7333/i);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 746,
+      "text": " let r=await run(e,'activate',C1,'acme','--pm-after-harness','--tester-port','7333');assert.equal(r.code,0,r.out+r.err);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 749,
+      "text": " assert.deepEqual(pointer(e).console,testerFlags(e));assert.match(consoleText(e),/--tester-port 7333(?:\\n|$)/);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 821,
+      "text": "  const rule=(port,main)=>`--tester-port ${port} is not a whole port from 1024 to 65535 other than 7332${main?` and the Console's --port ${main}`:''}`;",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 827,
+      "text": "   const r=await run(e,'activate',C1,'acme','--pm-after-harness','--plan','--tester-port',port);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 830,
+      "text": "   const u=await run(e,'activate',C1,'acme','--pm-after-harness','--tester-port',port);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 839,
+      "text": "  const n=calls(e).length,u=await run(e,'activate',C1,'acme','--tester-port','80');",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 843,
+      "text": " await t.test('a target Console without --tester-port',async(t)=>{",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 846,
+      "text": "  const r=await run(e,'activate',A,'acme','--tester-port','7333','--plan');",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 848,
+      "text": "  assert.deepEqual(r.out.split('\\n').filter((l)=>l.startsWith('refuses ')),[`refuses tester-port-target: ${A}'s Console does not support --tester-port`,`refuses unknown-kind-for-target: the business file names plug-in kind(s) harness, which ${A} does not know`]);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 850,
+      "text": "  await refused(e,['activate',A,'acme','--tester-port','7333'],'tester-port-target',`${A}'s Console does not support --tester-port`);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1056,
+      "text": " const r=await run(e,'activate',C1,'acme','--tester-port','7333');assert.equal(r.code,0,r.out+r.err);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1057,
+      "text": " assert.deepEqual(pointer(e).console,[...expected,'--tester-port','7333']);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1058,
+      "text": " assert.ok(consoleText(e).includes([...expected,'--tester-port','7333'].join(' ')));",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1129,
+      "text": " await t.test('tests 1 and 9: the pair goes after the preview flags, before --send and the kept --tester-port, as the unit renders it; a new pair replaces it',async(t)=>{",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1132,
+      "text": "  let r=await prun(e,'activate',C1,'acme','--tester-port','7333');assert.equal(r.code,0,r.out+r.err);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1135,
+      "text": "  assert.ok(out.find((l)=>l.startsWith('Console: ')).endsWith(` ${PREVIEW.join(' ')} ${pair(f).join(' ')} --send --tester-port 7333`));",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1137,
+      "text": "  assert.deepEqual(pointer(e).console,[...pre,...pair(f),'--send','--tester-port','7333']);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1138,
+      "text": "  assert.ok(conExec(e).endsWith(` --checkout ${repo} ${[...pre,...pair(f),'--send','--tester-port','7333'].join(' ')}`),conExec(e));",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1141,
+      "text": "  assert.deepEqual(pointer(e).console,[...pre,...pair(g,'X-Proof-Two'),'--send','--tester-port','7333']);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1162,
+      "text": "  await refused(e,['activate',B,'acme','--tester-port','7333'],'already-active',`${B} is the pointer's copy`);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1351,
+      "text": "  const e=await mk(t),base=await seedPreview(e,undefined,['--send','--tester-port','7333']),want=noSend(base);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1352,
+      "text": "  assert.deepEqual(want.slice(-2),['--tester-port','7333']);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1367,
+      "text": "  await refused(e,['activate',B,'acme','--tester-port','7333'],'already-active',`${B} is the pointer's copy`);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1468,
+      "text": "const ROLLBACK_PLAN=(set)=>`sso: dropped; ${B}'s Console does not support --sso, so the rollback takes the Console flags from ${set}/${SHOW}, with --send and --tester-port as the pointer has them`;",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1480,
+      "text": "  let r=await prun(e,'activate',B,'acme','--tester-port','7333',...pair(f));assert.equal(r.code,0,r.out+r.err);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1481,
+      "text": "  assert.deepEqual(pointer(e).console,[...pre,...pair(f),'--send','--tester-port','7333']);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1483,
+      "text": "  const want=['--port',e.port,'--business','acme','--sso','--send','--tester-port','7333'];",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1486,
+      "text": "   `sso: on; drops ${DROPS}; carries --port ${e.port} --business acme --send --tester-port 7333`]);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1563,
+      "text": "  const out=await planOnly(e,3,'activate',C,'acme','--sso','--tester-port','80');",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1564,
+      "text": "  assert.deepEqual(out.filter((l)=>l.startsWith('refuses ')),[`refuses tester-port-invalid: --tester-port 80 is not a whole port from 1024 to 65535 other than 7332 and the Console's --port ${e.port}`,`refuses sso-slot: ${bad('is inside the repository or the copies')}`]);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1584,
+      "text": "  const e=await mk(t),base=await seedPreview(e,undefined,['--send','--tester-port','7333']);await ssoConfig(e);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1594,
+      "text": "  const want=[...noSend(base.slice(0,-2)),'--tester-port','7333'];",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1682,
+      "text": "  assert.deepEqual(ssoLines(await planOnly(a,0,'rollback','acme')),[`sso: dropped; ${B}'s Console does not support --sso, so the rollback takes the Console flags from ${set}/${show}, with --send and --tester-port as the pointer has them`]);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 1811,
+      "text": " writeFileSync(e.pointer,JSON.stringify({copy,business:'acme',pm:true,claude:e.claude,console:['--port',e.port,'--business','acme','--tester-port',TESTER],schema:store,activation:'manual',at:'2026-10-20T00:00:00Z'})+'\\n');",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 2198,
+      "text": "   ['beta\\'s tester port on alpha\\'s port',b,['--port',free,'--tester-port',a.port],1,`webui-service: refusing port-claimed: ${held}; nothing was changed\\n`],",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 2202,
+      "text": "   ['beta\\'s tester port on 7333',b,['--port',free,'--tester-port','7333'],4,'webui-service: port-reserved: 7333 is reserved for the default instance (7330 7332 7333)\\n'],",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 2217,
+      "text": "  await refused('--tester-port','--tester-port',a.port);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 2280,
+      "text": " let r=await run(e,'activate',B,'acme','--tester-port','7333');assert.equal(r.code,0,r.out+r.err);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 2290,
+      "text": " r=await run(e,'activate',C1,'acme','--tester-socket','--plan');assert.equal(r.code,0,r.out+r.err);assert.match(r.out,/--tester-socket/);assert.match(r.out,/drop.*--tester-port 7333/);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 2292,
+      "text": " assert.deepEqual(pointer(e).console,[...base,...pair(proof),'--tester-socket']);assert.match(consoleText(e),/--tester-socket/);assert.doesNotMatch(consoleText(e),/--tester-port/);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 2319,
+      "text": " assert.doesNotMatch(conExec(e),/ --send(?: |$)|--tester-port|--public-host|--proof-header/);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/cli/tests/stack-release.test.mjs",
+      "line": 2388,
+      "text": "  assert.equal(context.argv.includes('--tester-socket'),marked);assert.equal(context.argv.includes('--tester-port'),false);",
+      "reason": "Legacy release compatibility, rollback, pointer and migration assertions; brief step 5."
+    },
+    {
+      "file": "packages/webui/README.md",
+      "line": 1001,
+      "text": "There is no tester TCP listener. `--tester-port` is retired for this copy.",
+      "reason": "Current retirement notice explicitly states no tester TCP listener."
+    },
+    {
+      "file": "packages/webui/src/cli.mjs",
+      "line": 30,
+      "text": "    if (flag === '--tester-port') throw new Error('--tester-port retired; activate explicitly with --tester-socket');",
+      "reason": "Current CLI explicit retirement refusal, not an activation path."
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 125,
+      "text": "    const r = await run(dir, ['render', '--tester-port', port, ...PREVIEW, '--send']);",
+      "reason": "Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5."
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 127,
+      "text": "    assert.match(execStart(r.stdout), new RegExp(` --tester-port ${port}( |$)`));",
+      "reason": "Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5."
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 129,
+      "text": "    assert.ok(execStart(r.stdout).endsWith(` ${PREVIEW_FLAGS} --send --tester-port ${port}`));",
+      "reason": "Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5."
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 136,
+      "text": "    const r = await run(dir, ['render', '--port', main, '--tester-port', '7332']);",
+      "reason": "Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5."
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 150,
+      "text": "    ['--tester-port', ''], ['--tester-port', '1023'], ['--tester-port', '65536'],",
+      "reason": "Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5."
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 151,
+      "text": "    ['--tester-port', '-1'], ['--tester-port', '3.5'], ['--tester-port', '1e4'],",
+      "reason": "Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5."
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 152,
+      "text": "    ['--tester-port', 'abc'], ['--tester-port', '7333 '], ['--tester-port', '7333\\n'],",
+      "reason": "Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5."
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 153,
+      "text": "    ['--port', '7444', '--tester-port', '7444'],",
+      "reason": "Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5."
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 154,
+      "text": "    ['--tester-port', '7444', '--port', '7444'],",
+      "reason": "Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5."
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 164,
+      "text": "  assert.equal((await run(dir, ['render', '--tester-port'])).status, 4);",
+      "reason": "Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5."
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 172,
+      "text": "  const six = await run(dir, ['render', '--tester-port', '007333']);",
+      "reason": "Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5."
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 175,
+      "text": "  assert.equal(six.stderr, 'webui-service: --tester-port must be 1024..65535, different from --port and never 7332: 007333\\n');",
+      "reason": "Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5."
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 176,
+      "text": "  const five = await run(dir, ['render', '--tester-port', '07333']);",
+      "reason": "Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5."
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 178,
+      "text": "  assert.ok(execStart(five.stdout).endsWith(' --tester-port 07333'), execStart(five.stdout));",
+      "reason": "Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5."
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 186,
+      "text": "  const installed = await run(dir, ['install', ...INSTALL, '--dir', unitDir, '--no-reload', '--port', String(port), '--tester-port', '1024', ...PREVIEW, '--send'], bin);",
+      "reason": "Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5."
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 188,
+      "text": "  assert.match(installed.stdout, /^serve: .* --tester-port 1024( |$)/m);",
+      "reason": "Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5."
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 189,
+      "text": "  assert.match(execStart(readFileSync(join(unitDir, 'mosaic-webui.service'), 'utf8')), / --tester-port 1024( |$)/);",
+      "reason": "Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5."
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 199,
+      "text": "    const refused = await run(dir, [verb, '--dir', unitDir, '--tester-port', '7333'], bin);",
+      "reason": "Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5."
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 799,
+      "text": "  const r = await run(dir, ['install', ...INSTALL, '--dir', unitDir, '--no-reload', '--port', String(port), ...PREVIEW, '--send', '--tester-port', '1024', '--proof-header', 'x-console-proof', '--proof-file', file], bin);",
+      "reason": "Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5."
+    },
+    {
+      "file": "packages/webui/tests/service.test.mjs",
+      "line": 813,
+      "text": " const both=await run(dir,['render','--tester-socket','--tester-port','7333']);",
+      "reason": "Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5."
+    },
+    {
+      "file": "packages/webui/tests/tester-cli.test.mjs",
+      "line": 25,
+      "text": "  for (const flags of [['--tester-port', '7332'], ['--port', '7444', '--tester-port', '7444'], ['--tester-port', '7444', '--port', '7444'], ...['1023', '65536', '1.5', '-1', 'nope'].map(p => ['--tester-port', p])]) {",
+      "reason": "Explicit current-CLI negative calls; brief step 5."
+    },
+    {
+      "file": "scripts/case1-accept.sh",
+      "line": 71,
+      "text": "            --tester-port) refuse \"case1-accept.sh retires tester TCP; use --tester-socket\" ;;",
+      "reason": "New explicit migration refusal for saved old arguments."
+    },
+    {
+      "file": "scripts/case2-unit.sh",
+      "line": 215,
+      "text": "            --tester-port) die \"case2-unit.sh retires tester TCP; use --tester-socket\" ;;",
+      "reason": "New explicit migration refusal before rendering units."
+    },
+    {
+      "file": "scripts/instance.sh",
+      "line": 114,
+      "text": "# this instance's, whose ExecStart takes PORT as --port or --tester-port.",
+      "reason": "Legacy installed-unit port inventory/parser retained by brief step 5."
+    },
+    {
+      "file": "scripts/instance.sh",
+      "line": 132,
+      "text": "                --tester-port) [[ \"$tok\" =~ ^[0-9]{1,5}$ ]] && ports+=(\"$((10#$tok))\") ;;",
+      "reason": "Legacy installed-unit port inventory/parser retained by brief step 5."
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 47,
+      "text": "       stack-release.sh activate ID BUSINESS [--pm | --pm-after-harness] [--migrate] [--tester-socket | --tester-port N (legacy copies)]",
+      "reason": "Legacy-copy activation/rollback, port inventory and migration retained by brief step 5."
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 63,
+      "text": "activate and rollback --plan take --expect-from OLD. --pm, --pm-after-harness, --tester-port, the",
+      "reason": "Legacy-copy activation/rollback, port inventory and migration retained by brief step 5."
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 126,
+      "text": "            --tester-port) [ \"$OP\" = activate ] && [ $# -ge 2 ] && [ -n \"$2\" ] || usage; TESTER_PORT=\"$2\"; shift 2 ;;",
+      "reason": "Legacy-copy activation/rollback, port inventory and migration retained by brief step 5."
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 797,
+      "text": "    elif grep -q -- '--tester-port' \"$cli\"; then supported=1; fi",
+      "reason": "Legacy-copy activation/rollback, port inventory and migration retained by brief step 5."
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 800,
+      "text": "            --tester-port) i=$((i + 1)); inherited=\"${BASE_CONSOLE[i]:-}\" ;;",
+      "reason": "Legacy-copy activation/rollback, port inventory and migration retained by brief step 5."
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 814,
+      "text": "            [ -z \"$inherited\" ] || DROP_TESTER=\"--tester-port $inherited (replaced by private Unix socket)\"",
+      "reason": "Legacy-copy activation/rollback, port inventory and migration retained by brief step 5."
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 830,
+      "text": "            check_refuse tester-port-invalid \"--tester-port $TESTER_PORT is not a whole port from 1024 to 65535 other than 7332$other\"",
+      "reason": "Legacy-copy activation/rollback, port inventory and migration retained by brief step 5."
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 832,
+      "text": "        [ \"$supported\" = 1 ] || check_refuse tester-port-target \"$TO's Console does not support --tester-port\"",
+      "reason": "Legacy-copy activation/rollback, port inventory and migration retained by brief step 5."
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 833,
+      "text": "        RUN_CONSOLE=(\"${without_tester[@]}\" --tester-port \"$TESTER_PORT\")",
+      "reason": "Legacy-copy activation/rollback, port inventory and migration retained by brief step 5."
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 837,
+      "text": "        RUN_CONSOLE=(\"${without_tester[@]}\") DROP_TESTER=\"--tester-port $inherited\"",
+      "reason": "Legacy-copy activation/rollback, port inventory and migration retained by brief step 5."
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 878,
+      "text": "    # --send and --tester-port follow the pointer, so a --no-send or a tester port set after that",
+      "reason": "Legacy-copy activation/rollback, port inventory and migration retained by brief step 5."
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 885,
+      "text": "            --tester-port) i=$((i + 1)) ;;",
+      "reason": "Legacy-copy activation/rollback, port inventory and migration retained by brief step 5."
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 893,
+      "text": "            --tester-port) i=$((i + 1)); BASE_CONSOLE+=(--tester-port \"${P_CONSOLE[i]:-}\") ;;",
+      "reason": "Legacy-copy activation/rollback, port inventory and migration retained by brief step 5."
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 897,
+      "text": "    SSO_PLAN=\"sso: dropped; $TO's Console does not support --sso, so the rollback takes the Console flags from $set/$f, with --send and --tester-port as the pointer has them\"",
+      "reason": "Legacy-copy activation/rollback, port inventory and migration retained by brief step 5."
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 903,
+      "text": "# --tester-port. Sets SSO_DROP (the plan's dropped preview flags), PROOF_PLAN and PROOF_STEP.",
+      "reason": "Legacy-copy activation/rollback, port inventory and migration retained by brief step 5."
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 919,
+      "text": "        case \"${kept[i]}\" in --send | --tester-port | --tester-socket) break ;; esac",
+      "reason": "Legacy-copy activation/rollback, port inventory and migration retained by brief step 5."
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 1076,
+      "text": "            case \"${without_proof[i]}\" in --send | --tester-port | --tester-socket) break ;; esac",
+      "reason": "Legacy-copy activation/rollback, port inventory and migration retained by brief step 5."
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 1134,
+      "text": "# Row 190: the target Console's --port (7332 when absent) and --tester-port against every other",
+      "reason": "Legacy-copy activation/rollback, port inventory and migration retained by brief step 5."
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 1142,
+      "text": "            --tester-port) ports+=(\"${RUN_CONSOLE[i + 1]:-}\") ;;",
+      "reason": "Legacy-copy activation/rollback, port inventory and migration retained by brief step 5."
+    },
+    {
+      "file": "scripts/stack-release.sh",
+      "line": 2106,
+      "text": "    for ((i = 0; i < ${#P_CONSOLE[@]}; i++)); do [ \"${P_CONSOLE[i]}\" != --tester-port ] || reserved+=(\"${P_CONSOLE[i + 1]:-}\"); done",
+      "reason": "Legacy-copy activation/rollback, port inventory and migration retained by brief step 5."
+    },
+    {
+      "file": "scripts/webui-service.sh",
+      "line": 43,
+      "text": "# Console), --tester-socket (private Unix tester), or legacy --tester-port N",
+      "reason": "Legacy unit renderer/parser and port inventory retained by brief step 5."
+    },
+    {
+      "file": "scripts/webui-service.sh",
+      "line": 74,
+      "text": "# --tester-port that another installed Console unit in the unit directory",
+      "reason": "Legacy unit renderer/parser and port inventory retained by brief step 5."
+    },
+    {
+      "file": "scripts/webui-service.sh",
+      "line": 96,
+      "text": "  FLAGS: [--port N] [--business ID] [--board URL] [--sso [--send] | --public-host NAME --auth-header HEADER --allow-user ID [--send]] [--tester-socket | --tester-port N (legacy copies)] [--proof-header NAME --proof-file PATH]",
+      "reason": "Legacy unit renderer/parser and port inventory retained by brief step 5."
+    },
+    {
+      "file": "scripts/webui-service.sh",
+      "line": 97,
+      "text": "  --tester-port: legacy copies only; 1024..65535, different from --port and never 7332; loopback tester listener.",
+      "reason": "Legacy unit renderer/parser and port inventory retained by brief step 5."
+    },
+    {
+      "file": "scripts/webui-service.sh",
+      "line": 137,
+      "text": "            --tester-port) [ $# -ge 2 ] || usage; TESTER_PORT=\"$2\"; TESTER_SET=1; SERVE_SET=1; shift 2 ;;",
+      "reason": "Legacy unit renderer/parser and port inventory retained by brief step 5."
+    },
+    {
+      "file": "scripts/webui-service.sh",
+      "line": 182,
+      "text": "    echo \"webui-service: --tester-port must be 1024..65535, different from --port and never 7332: $TESTER_PORT\" >&2",
+      "reason": "Legacy unit renderer/parser and port inventory retained by brief step 5."
+    },
+    {
+      "file": "scripts/webui-service.sh",
+      "line": 266,
+      "text": "    [ \"$TESTER_SET\" = 0 ] || flags=\"$flags --tester-port $TESTER_PORT\"",
+      "reason": "Legacy unit renderer/parser and port inventory retained by brief step 5."
+    },
+    {
+      "file": "scripts/webui-service.sh",
+      "line": 462,
+      "text": "    if grep -Eq '^ExecStart=.*( --allow-user [^ ][^ ]*( --proof-header [^ ]+ --proof-file /[^ ]+)?| --sso) --send( --tester-port [0-9]+| --tester-socket)?$' \"$target\"; then",
+      "reason": "Legacy unit renderer/parser and port inventory retained by brief step 5."
+    },
+    {
+      "file": "scripts/webui-service.sh",
+      "line": 467,
+      "text": "    if grep -Eq '^ExecStart=.* --sso( --send)?( --tester-port [0-9]+)?$' \"$target\"; then",
+      "reason": "Legacy unit renderer/parser and port inventory retained by brief step 5."
+    },
+    {
+      "file": "scripts/webui-service.sh",
+      "line": 471,
+      "text": "    tester_port=\"$(sed -n 's/^ExecStart=.* --tester-port \\([0-9][0-9]*\\)$/\\1/p' \"$target\")\"",
+      "reason": "Legacy unit renderer/parser and port inventory retained by brief step 5."
+    }
+  ]
+}
@@ -0,0 +1,131 @@
+# Row253 retired-port audit
+
+Current static source audit after the two approved fixture fixes. Each remaining hit and its reason follows.
+
+- `packages/cli/tests/case1-accept.test.mjs:596`: New negative saved-argument fixture asserting the migration refusal. Text: `"retired TCP": [(h) => put(h.args, [...ARGS.slice(0,-1),'--tester-port','7333'].join('\n')+'\n',0o644), /case1-accept.sh retires tester TCP; use --tester-socket$/],`
+- `packages/cli/tests/case1-hostcheck.test.mjs:68`: Deliberate legacy hostcheck fixture; brief step 5 leaves it unchanged. Text: `"[Service]\nExecStart=/opt/mosaic-stack/node/bin/node /srv/mosaic/copies/x/packages/webui/src/cli.mjs serve --port 732 --business mosaic-stack --tester-port 7333\n");`
+- `packages/cli/tests/case1-hostcheck.test.mjs:215`: Deliberate legacy hostcheck fixture; brief step 5 leaves it unchanged. Text: `put(join(h.root, "etc", "systemd", "system", "mosaic-webui.service"), "[Service]\nExecStart=/x serve --business mosaic-stack --tester-port 7333\n");`
+- `packages/cli/tests/case2-unit.test.mjs:445`: New negative factory/library fixtures asserting the migration refusal. Text: `["--tester-port", "7333", /case2-unit.sh retires tester TCP; use --tester-socket/],`
+- `packages/cli/tests/case2-unit.test.mjs:496`: New negative factory/library fixtures asserting the migration refusal. Text: `refuses(unit(h, { profile: "factory", flags: ['--port','443','--business','acme','--tester-port','7333'] }), /case2-unit.sh retires tester TCP; use --tester-socket/);`
+- `packages/cli/tests/stack-release-external.test.mjs:75`: Legacy stack-release external refusal fixture, excluded by brief step 5. Text: `for(const a of [['activate',C1,'acme','--pm'],['activate',C1,'acme','--tester-port','7444'],['activate',C1,'acme','--no-proof'],['activate',C1,'acme','--no-send'],['activate',C1,'acme','--sso'],['activate',C1,'acme','--proof-header','X','--proof-file','/p'],['rollback','acme'],['gate',B,'acme'],['activate',C1,'acme','--expect-from',B],['confirm',C1,'acme','--rollback',B],['confirm',C1,'acme','--cause','A5']]){`
+- `packages/cli/tests/stack-release-fixture.mjs:306`: Retained pre-196 copy fixture for legacy activation and rollback. Text: `for(const [f,text,mode] of [['scripts/mosaic',script(mosaicStub),0o755],['packages/webui/src/cli.mjs',[B,C1,C].includes(id)?`// fixture Console, never run\n// serve accepts '--tester-port'\n// serve accepts '--proof-header' (row 178)\n${[C1,C].includes(id)?"// serve accepts '--sso' (row 192)\n":''}`:'// fixture Console before tester listener, never run\n',0o644],['packages/bus/src/store.mjs',store,0o644],['packages/bus/src/migrate-schema.mjs',`(${migrateStub})();\n`,0o644],['packages/plugins/src/kinds.mjs',[C1,C].includes(id)?KINDS_NEW:KINDS_OLD,0o644],...ssoFiles(id).map(([f,text])=>[f,text,0o644])]){`
+- `packages/cli/tests/stack-release.test.mjs:681`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `const testerFlags=(e,port='7333')=>['--port',e.port,'--business','acme','--tester-port',port];`
+- `packages/cli/tests/stack-release.test.mjs:687`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `let r=await run(e,'activate',C1,'acme','--tester-port','7333');assert.equal(r.code,0,r.out+r.err);`
+- `packages/cli/tests/stack-release.test.mjs:688`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.deepEqual(pointer(e).console,testerFlags(e));assert.match(consoleText(e),/--tester-port 7333(?:\n|$)/);`
+- `packages/cli/tests/stack-release.test.mjs:690`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `r=await run(e,'activate',B,'acme','--tester-port','7334');assert.equal(r.code,0,r.out+r.err);`
+- `packages/cli/tests/stack-release.test.mjs:692`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.match(consoleText(e),/--tester-port 7334(?:\n|$)/);assert.doesNotMatch(consoleText(e),/--tester-port 7333/);`
+- `packages/cli/tests/stack-release.test.mjs:693`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.equal((consoleText(e).match(/--tester-port/g)||[]).length,1);`
+- `packages/cli/tests/stack-release.test.mjs:694`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `r=await run(e,'activate',C1,'acme','--plan');assert.equal(r.code,0,r.out+r.err);assert.match(r.out,/Console: .*--tester-port 7334/);`
+- `packages/cli/tests/stack-release.test.mjs:697`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.deepEqual(pointer(e).console,testerFlags(e,'7334'));assert.match(consoleText(e),/--tester-port 7334(?:\n|$)/);`
+- `packages/cli/tests/stack-release.test.mjs:702`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `let r=await run(e,'activate',B,'acme','--tester-port','7333');assert.equal(r.code,0,r.out+r.err);`
+- `packages/cli/tests/stack-release.test.mjs:705`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.match(r.out,/drop[^\n]*--tester-port 7333/i);assert.doesNotMatch(r.out.split('\n').find((l)=>l.startsWith('Console: ')),/--tester-port/);`
+- `packages/cli/tests/stack-release.test.mjs:708`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.deepEqual(pointer(e).console,['--port',e.port,'--business','acme']);assert.doesNotMatch(consoleText(e),/--tester-port/);`
+- `packages/cli/tests/stack-release.test.mjs:709`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.match(stepText(e),/drop[^\n]*--tester-port 7333/i);`
+- `packages/cli/tests/stack-release.test.mjs:714`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `const r=await run(e,'activate',A,'acme','--tester-port','7333');assert.equal(r.code,3,r.out+r.err);`
+- `packages/cli/tests/stack-release.test.mjs:718`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.match(readFileSync(join(repo,'packages/webui/src/cli.mjs'),'utf8'),/--tester-port/);`
+- `packages/cli/tests/stack-release.test.mjs:724`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `const r=await run(e,'activate',C1,'acme','--tester-port',value);assert.equal(r.code,4,`${value}: ${r.out}${r.err}`);`
+- `packages/cli/tests/stack-release.test.mjs:731`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `let r=await run(e,'activate',C1,'acme','--tester-port','7333');assert.equal(r.code,0,r.out+r.err);`
+- `packages/cli/tests/stack-release.test.mjs:732`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `r=await run(e,'activate',A,'acme','--plan');assert.equal(r.code,0,r.out+r.err);assert.match(r.out,/drop[^\n]*--tester-port 7333/i);`
+- `packages/cli/tests/stack-release.test.mjs:736`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `edit(join(e.units,CON),'--tester-port 7333','--tester-port 7334');const n=calls(e).length;`
+- `packages/cli/tests/stack-release.test.mjs:738`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `edit(join(e.units,CON),'--tester-port 7334','--tester-port 7333');`
+- `packages/cli/tests/stack-release.test.mjs:740`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.deepEqual(pointer(e).console,['--port',e.port,'--business','acme']);assert.doesNotMatch(consoleText(e),/--tester-port/);`
+- `packages/cli/tests/stack-release.test.mjs:741`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.match(stepText(e),/drop[^\n]*--tester-port 7333/i);`
+- `packages/cli/tests/stack-release.test.mjs:746`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `let r=await run(e,'activate',C1,'acme','--pm-after-harness','--tester-port','7333');assert.equal(r.code,0,r.out+r.err);`
+- `packages/cli/tests/stack-release.test.mjs:749`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.deepEqual(pointer(e).console,testerFlags(e));assert.match(consoleText(e),/--tester-port 7333(?:\n|$)/);`
+- `packages/cli/tests/stack-release.test.mjs:821`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `const rule=(port,main)=>`--tester-port ${port} is not a whole port from 1024 to 65535 other than 7332${main?` and the Console's --port ${main}`:''}`;`
+- `packages/cli/tests/stack-release.test.mjs:827`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `const r=await run(e,'activate',C1,'acme','--pm-after-harness','--plan','--tester-port',port);`
+- `packages/cli/tests/stack-release.test.mjs:830`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `const u=await run(e,'activate',C1,'acme','--pm-after-harness','--tester-port',port);`
+- `packages/cli/tests/stack-release.test.mjs:839`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `const n=calls(e).length,u=await run(e,'activate',C1,'acme','--tester-port','80');`
+- `packages/cli/tests/stack-release.test.mjs:843`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `await t.test('a target Console without --tester-port',async(t)=>{`
+- `packages/cli/tests/stack-release.test.mjs:846`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `const r=await run(e,'activate',A,'acme','--tester-port','7333','--plan');`
+- `packages/cli/tests/stack-release.test.mjs:848`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.deepEqual(r.out.split('\n').filter((l)=>l.startsWith('refuses ')),[`refuses tester-port-target: ${A}'s Console does not support --tester-port`,`refuses unknown-kind-for-target: the business file names plug-in kind(s) harness, which ${A} does not know`]);`
+- `packages/cli/tests/stack-release.test.mjs:850`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `await refused(e,['activate',A,'acme','--tester-port','7333'],'tester-port-target',`${A}'s Console does not support --tester-port`);`
+- `packages/cli/tests/stack-release.test.mjs:1056`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `const r=await run(e,'activate',C1,'acme','--tester-port','7333');assert.equal(r.code,0,r.out+r.err);`
+- `packages/cli/tests/stack-release.test.mjs:1057`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.deepEqual(pointer(e).console,[...expected,'--tester-port','7333']);`
+- `packages/cli/tests/stack-release.test.mjs:1058`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.ok(consoleText(e).includes([...expected,'--tester-port','7333'].join(' ')));`
+- `packages/cli/tests/stack-release.test.mjs:1129`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `await t.test('tests 1 and 9: the pair goes after the preview flags, before --send and the kept --tester-port, as the unit renders it; a new pair replaces it',async(t)=>{`
+- `packages/cli/tests/stack-release.test.mjs:1132`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `let r=await prun(e,'activate',C1,'acme','--tester-port','7333');assert.equal(r.code,0,r.out+r.err);`
+- `packages/cli/tests/stack-release.test.mjs:1135`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.ok(out.find((l)=>l.startsWith('Console: ')).endsWith(` ${PREVIEW.join(' ')} ${pair(f).join(' ')} --send --tester-port 7333`));`
+- `packages/cli/tests/stack-release.test.mjs:1137`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.deepEqual(pointer(e).console,[...pre,...pair(f),'--send','--tester-port','7333']);`
+- `packages/cli/tests/stack-release.test.mjs:1138`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.ok(conExec(e).endsWith(` --checkout ${repo} ${[...pre,...pair(f),'--send','--tester-port','7333'].join(' ')}`),conExec(e));`
+- `packages/cli/tests/stack-release.test.mjs:1141`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.deepEqual(pointer(e).console,[...pre,...pair(g,'X-Proof-Two'),'--send','--tester-port','7333']);`
+- `packages/cli/tests/stack-release.test.mjs:1162`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `await refused(e,['activate',B,'acme','--tester-port','7333'],'already-active',`${B} is the pointer's copy`);`
+- `packages/cli/tests/stack-release.test.mjs:1351`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `const e=await mk(t),base=await seedPreview(e,undefined,['--send','--tester-port','7333']),want=noSend(base);`
+- `packages/cli/tests/stack-release.test.mjs:1352`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.deepEqual(want.slice(-2),['--tester-port','7333']);`
+- `packages/cli/tests/stack-release.test.mjs:1367`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `await refused(e,['activate',B,'acme','--tester-port','7333'],'already-active',`${B} is the pointer's copy`);`
+- `packages/cli/tests/stack-release.test.mjs:1468`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `const ROLLBACK_PLAN=(set)=>`sso: dropped; ${B}'s Console does not support --sso, so the rollback takes the Console flags from ${set}/${SHOW}, with --send and --tester-port as the pointer has them`;`
+- `packages/cli/tests/stack-release.test.mjs:1480`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `let r=await prun(e,'activate',B,'acme','--tester-port','7333',...pair(f));assert.equal(r.code,0,r.out+r.err);`
+- `packages/cli/tests/stack-release.test.mjs:1481`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.deepEqual(pointer(e).console,[...pre,...pair(f),'--send','--tester-port','7333']);`
+- `packages/cli/tests/stack-release.test.mjs:1483`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `const want=['--port',e.port,'--business','acme','--sso','--send','--tester-port','7333'];`
+- `packages/cli/tests/stack-release.test.mjs:1486`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: ``sso: on; drops ${DROPS}; carries --port ${e.port} --business acme --send --tester-port 7333`]);`
+- `packages/cli/tests/stack-release.test.mjs:1563`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `const out=await planOnly(e,3,'activate',C,'acme','--sso','--tester-port','80');`
+- `packages/cli/tests/stack-release.test.mjs:1564`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.deepEqual(out.filter((l)=>l.startsWith('refuses ')),[`refuses tester-port-invalid: --tester-port 80 is not a whole port from 1024 to 65535 other than 7332 and the Console's --port ${e.port}`,`refuses sso-slot: ${bad('is inside the repository or the copies')}`]);`
+- `packages/cli/tests/stack-release.test.mjs:1584`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `const e=await mk(t),base=await seedPreview(e,undefined,['--send','--tester-port','7333']);await ssoConfig(e);`
+- `packages/cli/tests/stack-release.test.mjs:1594`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `const want=[...noSend(base.slice(0,-2)),'--tester-port','7333'];`
+- `packages/cli/tests/stack-release.test.mjs:1682`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.deepEqual(ssoLines(await planOnly(a,0,'rollback','acme')),[`sso: dropped; ${B}'s Console does not support --sso, so the rollback takes the Console flags from ${set}/${show}, with --send and --tester-port as the pointer has them`]);`
+- `packages/cli/tests/stack-release.test.mjs:1811`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `writeFileSync(e.pointer,JSON.stringify({copy,business:'acme',pm:true,claude:e.claude,console:['--port',e.port,'--business','acme','--tester-port',TESTER],schema:store,activation:'manual',at:'2026-10-20T00:00:00Z'})+'\n');`
+- `packages/cli/tests/stack-release.test.mjs:2198`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `['beta\'s tester port on alpha\'s port',b,['--port',free,'--tester-port',a.port],1,`webui-service: refusing port-claimed: ${held}; nothing was changed\n`],`
+- `packages/cli/tests/stack-release.test.mjs:2202`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `['beta\'s tester port on 7333',b,['--port',free,'--tester-port','7333'],4,'webui-service: port-reserved: 7333 is reserved for the default instance (7330 7332 7333)\n'],`
+- `packages/cli/tests/stack-release.test.mjs:2217`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `await refused('--tester-port','--tester-port',a.port);`
+- `packages/cli/tests/stack-release.test.mjs:2280`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `let r=await run(e,'activate',B,'acme','--tester-port','7333');assert.equal(r.code,0,r.out+r.err);`
+- `packages/cli/tests/stack-release.test.mjs:2290`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `r=await run(e,'activate',C1,'acme','--tester-socket','--plan');assert.equal(r.code,0,r.out+r.err);assert.match(r.out,/--tester-socket/);assert.match(r.out,/drop.*--tester-port 7333/);`
+- `packages/cli/tests/stack-release.test.mjs:2292`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.deepEqual(pointer(e).console,[...base,...pair(proof),'--tester-socket']);assert.match(consoleText(e),/--tester-socket/);assert.doesNotMatch(consoleText(e),/--tester-port/);`
+- `packages/cli/tests/stack-release.test.mjs:2319`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.doesNotMatch(conExec(e),/ --send(?: |$)|--tester-port|--public-host|--proof-header/);`
+- `packages/cli/tests/stack-release.test.mjs:2388`: Legacy release compatibility, rollback, pointer and migration assertions; brief step 5. Text: `assert.equal(context.argv.includes('--tester-socket'),marked);assert.equal(context.argv.includes('--tester-port'),false);`
+- `packages/webui/README.md:1001`: Current retirement notice explicitly states no tester TCP listener. Text: `There is no tester TCP listener. `--tester-port` is retired for this copy.`
+- `packages/webui/src/cli.mjs:30`: Current CLI explicit retirement refusal, not an activation path. Text: `if (flag === '--tester-port') throw new Error('--tester-port retired; activate explicitly with --tester-socket');`
+- `packages/webui/tests/service.test.mjs:125`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `const r = await run(dir, ['render', '--tester-port', port, ...PREVIEW, '--send']);`
+- `packages/webui/tests/service.test.mjs:127`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `assert.match(execStart(r.stdout), new RegExp(` --tester-port ${port}( |$)`));`
+- `packages/webui/tests/service.test.mjs:129`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `assert.ok(execStart(r.stdout).endsWith(` ${PREVIEW_FLAGS} --send --tester-port ${port}`));`
+- `packages/webui/tests/service.test.mjs:136`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `const r = await run(dir, ['render', '--port', main, '--tester-port', '7332']);`
+- `packages/webui/tests/service.test.mjs:150`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `['--tester-port', ''], ['--tester-port', '1023'], ['--tester-port', '65536'],`
+- `packages/webui/tests/service.test.mjs:151`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `['--tester-port', '-1'], ['--tester-port', '3.5'], ['--tester-port', '1e4'],`
+- `packages/webui/tests/service.test.mjs:152`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `['--tester-port', 'abc'], ['--tester-port', '7333 '], ['--tester-port', '7333\n'],`
+- `packages/webui/tests/service.test.mjs:153`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `['--port', '7444', '--tester-port', '7444'],`
+- `packages/webui/tests/service.test.mjs:154`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `['--tester-port', '7444', '--port', '7444'],`
+- `packages/webui/tests/service.test.mjs:164`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `assert.equal((await run(dir, ['render', '--tester-port'])).status, 4);`
+- `packages/webui/tests/service.test.mjs:172`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `const six = await run(dir, ['render', '--tester-port', '007333']);`
+- `packages/webui/tests/service.test.mjs:175`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `assert.equal(six.stderr, 'webui-service: --tester-port must be 1024..65535, different from --port and never 7332: 007333\n');`
+- `packages/webui/tests/service.test.mjs:176`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `const five = await run(dir, ['render', '--tester-port', '07333']);`
+- `packages/webui/tests/service.test.mjs:178`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `assert.ok(execStart(five.stdout).endsWith(' --tester-port 07333'), execStart(five.stdout));`
+- `packages/webui/tests/service.test.mjs:186`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `const installed = await run(dir, ['install', ...INSTALL, '--dir', unitDir, '--no-reload', '--port', String(port), '--tester-port', '1024', ...PREVIEW, '--send'], bin);`
+- `packages/webui/tests/service.test.mjs:188`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `assert.match(installed.stdout, /^serve: .* --tester-port 1024( |$)/m);`
+- `packages/webui/tests/service.test.mjs:189`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `assert.match(execStart(readFileSync(join(unitDir, 'mosaic-webui.service'), 'utf8')), / --tester-port 1024( |$)/);`
+- `packages/webui/tests/service.test.mjs:199`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `const refused = await run(dir, [verb, '--dir', unitDir, '--tester-port', '7333'], bin);`
+- `packages/webui/tests/service.test.mjs:799`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `const r = await run(dir, ['install', ...INSTALL, '--dir', unitDir, '--no-reload', '--port', String(port), ...PREVIEW, '--send', '--tester-port', '1024', '--proof-header', 'x-console-proof', '--proof-file', file], bin);`
+- `packages/webui/tests/service.test.mjs:813`: Legacy unit renderer/parser compatibility and mixed-flag refusal fixtures; brief step 5. Text: `const both=await run(dir,['render','--tester-socket','--tester-port','7333']);`
+- `packages/webui/tests/tester-cli.test.mjs:25`: Explicit current-CLI negative calls; brief step 5. Text: `for (const flags of [['--tester-port', '7332'], ['--port', '7444', '--tester-port', '7444'], ['--tester-port', '7444', '--port', '7444'], ...['1023', '65536', '1.5', '-1', 'nope'].map(p => ['--tester-port', p])]) {`
+- `scripts/case1-accept.sh:71`: New explicit migration refusal for saved old arguments. Text: `--tester-port) refuse "case1-accept.sh retires tester TCP; use --tester-socket" ;;`
+- `scripts/case2-unit.sh:215`: New explicit migration refusal before rendering units. Text: `--tester-port) die "case2-unit.sh retires tester TCP; use --tester-socket" ;;`
+- `scripts/instance.sh:114`: Legacy installed-unit port inventory/parser retained by brief step 5. Text: `# this instance's, whose ExecStart takes PORT as --port or --tester-port.`
+- `scripts/instance.sh:132`: Legacy installed-unit port inventory/parser retained by brief step 5. Text: `--tester-port) [[ "$tok" =~ ^[0-9]{1,5}$ ]] && ports+=("$((10#$tok))") ;;`
+- `scripts/stack-release.sh:47`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `stack-release.sh activate ID BUSINESS [--pm | --pm-after-harness] [--migrate] [--tester-socket | --tester-port N (legacy copies)]`
+- `scripts/stack-release.sh:63`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `activate and rollback --plan take --expect-from OLD. --pm, --pm-after-harness, --tester-port, the`
+- `scripts/stack-release.sh:126`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `--tester-port) [ "$OP" = activate ] && [ $# -ge 2 ] && [ -n "$2" ] || usage; TESTER_PORT="$2"; shift 2 ;;`
+- `scripts/stack-release.sh:797`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `elif grep -q -- '--tester-port' "$cli"; then supported=1; fi`
+- `scripts/stack-release.sh:800`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `--tester-port) i=$((i + 1)); inherited="${BASE_CONSOLE[i]:-}" ;;`
+- `scripts/stack-release.sh:814`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `[ -z "$inherited" ] || DROP_TESTER="--tester-port $inherited (replaced by private Unix socket)"`
+- `scripts/stack-release.sh:830`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `check_refuse tester-port-invalid "--tester-port $TESTER_PORT is not a whole port from 1024 to 65535 other than 7332$other"`
+- `scripts/stack-release.sh:832`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `[ "$supported" = 1 ] || check_refuse tester-port-target "$TO's Console does not support --tester-port"`
+- `scripts/stack-release.sh:833`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `RUN_CONSOLE=("${without_tester[@]}" --tester-port "$TESTER_PORT")`
+- `scripts/stack-release.sh:837`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `RUN_CONSOLE=("${without_tester[@]}") DROP_TESTER="--tester-port $inherited"`
+- `scripts/stack-release.sh:878`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `# --send and --tester-port follow the pointer, so a --no-send or a tester port set after that`
+- `scripts/stack-release.sh:885`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `--tester-port) i=$((i + 1)) ;;`
+- `scripts/stack-release.sh:893`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `--tester-port) i=$((i + 1)); BASE_CONSOLE+=(--tester-port "${P_CONSOLE[i]:-}") ;;`
+- `scripts/stack-release.sh:897`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `SSO_PLAN="sso: dropped; $TO's Console does not support --sso, so the rollback takes the Console flags from $set/$f, with --send and --tester-port as the pointer has them"`
+- `scripts/stack-release.sh:903`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `# --tester-port. Sets SSO_DROP (the plan's dropped preview flags), PROOF_PLAN and PROOF_STEP.`
+- `scripts/stack-release.sh:919`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `case "${kept[i]}" in --send | --tester-port | --tester-socket) break ;; esac`
+- `scripts/stack-release.sh:1076`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `case "${without_proof[i]}" in --send | --tester-port | --tester-socket) break ;; esac`
+- `scripts/stack-release.sh:1134`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `# Row 190: the target Console's --port (7332 when absent) and --tester-port against every other`
+- `scripts/stack-release.sh:1142`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `--tester-port) ports+=("${RUN_CONSOLE[i + 1]:-}") ;;`
+- `scripts/stack-release.sh:2106`: Legacy-copy activation/rollback, port inventory and migration retained by brief step 5. Text: `for ((i = 0; i < ${#P_CONSOLE[@]}; i++)); do [ "${P_CONSOLE[i]}" != --tester-port ] || reserved+=("${P_CONSOLE[i + 1]:-}"); done`
+- `scripts/webui-service.sh:43`: Legacy unit renderer/parser and port inventory retained by brief step 5. Text: `# Console), --tester-socket (private Unix tester), or legacy --tester-port N`
+- `scripts/webui-service.sh:74`: Legacy unit renderer/parser and port inventory retained by brief step 5. Text: `# --tester-port that another installed Console unit in the unit directory`
+- `scripts/webui-service.sh:96`: Legacy unit renderer/parser and port inventory retained by brief step 5. Text: `FLAGS: [--port N] [--business ID] [--board URL] [--sso [--send] | --public-host NAME --auth-header HEADER --allow-user ID [--send]] [--tester-socket | --tester-port N (legacy copies)] [--proof-header NAME --proof-file PATH]`
+- `scripts/webui-service.sh:97`: Legacy unit renderer/parser and port inventory retained by brief step 5. Text: `--tester-port: legacy copies only; 1024..65535, different from --port and never 7332; loopback tester listener.`
+- `scripts/webui-service.sh:137`: Legacy unit renderer/parser and port inventory retained by brief step 5. Text: `--tester-port) [ $# -ge 2 ] || usage; TESTER_PORT="$2"; TESTER_SET=1; SERVE_SET=1; shift 2 ;;`
+- `scripts/webui-service.sh:182`: Legacy unit renderer/parser and port inventory retained by brief step 5. Text: `echo "webui-service: --tester-port must be 1024..65535, different from --port and never 7332: $TESTER_PORT" >&2`
+- `scripts/webui-service.sh:266`: Legacy unit renderer/parser and port inventory retained by brief step 5. Text: `[ "$TESTER_SET" = 0 ] || flags="$flags --tester-port $TESTER_PORT"`
+- `scripts/webui-service.sh:462`: Legacy unit renderer/parser and port inventory retained by brief step 5. Text: `if grep -Eq '^ExecStart=.*( --allow-user [^ ][^ ]*( --proof-header [^ ]+ --proof-file /[^ ]+)?| --sso) --send( --tester-port [0-9]+| --tester-socket)?$' "$target"; then`
+- `scripts/webui-service.sh:467`: Legacy unit renderer/parser and port inventory retained by brief step 5. Text: `if grep -Eq '^ExecStart=.* --sso( --send)?( --tester-port [0-9]+)?$' "$target"; then`
+- `scripts/webui-service.sh:471`: Legacy unit renderer/parser and port inventory retained by brief step 5. Text: `tester_port="$(sed -n 's/^ExecStart=.* --tester-port \([0-9][0-9]*\)$/\1/p' "$target")"`
@@ -0,0 +1,38 @@
+# Row253 granted gate
+
+Do not launch until Sage's CLEAR names this scope. No tests have run yet.
+Use this worktree, the frozen five blobs in CANDIDATE-SHAS.json and the plain
+node_modules link. No canonical-checkout node or queue writes during the slot.
+
+Set TMPDIR with `mktemp -d /mnt/storage/scratch/tmp/gXXX`, export it and use
+`set -o pipefail`. Record the grant and the exact date before launch. Use logs
+under this packet's `run1/`, with the outer log named `controller.log`.
+Neither helper nor wrapper argv may match the busy detector's patterns.
+
+Sequence, stopping to inspect every result:
+
+1. `window.py --stage focused`: isolated prior installer and acceptance RED
+   examples, restoring bytes/status in finally, then both focused test files
+   whole GREEN. Expected RED is recorded separately from gate failures.
+2. `driver.py`: 33 unique single-target changes, named base cases and killer
+   runs. Each base must pass in under 30 seconds. bash -n is the only invalid
+   classification. Runtime errors kill a change; unexpected timeouts stop for
+   Sage/Mos. Every run records time, code, raw tee log and byte/status restore.
+3. `window.py --stage whole`: cli whole, webui whole and the ten shell files
+   whole. No omitted tests, patterns or partial scripts in this phase.
+4. Sum counts and seconds from raw logs by script. Sweep process cwd/ancestry
+   for this worktree's node, tee, query and probe descendants. Report existing
+   processes separately. Return the slot immediately, then prepare review.
+
+Every driver invocation needs `--grant <Sage-id> --out <record-directory>`.
+Before each actual test, driver.run checks Sage's busy guard and launches only
+on CLEAR. It invokes a bash pipefail/tee pipeline through launch.py, which
+loads the structured command after the guard. No command text is embedded in
+wrapper argv. All execution is in a new process group and timed out groups
+are killed and waited for. Query-owned groups are independently bounded by
+product code; the orphan fixture also cleans its own recorded PID.
+
+Two unexpected failures end the window. These drivers stop at the first
+unexpected base, focused or whole-phase failure for inspection, without
+automatically rerunning it. Any timeout is a stop. Send a stop to Sage/Mos
+and do not turn an ungranted retry into a new run.
@@ -0,0 +1,50 @@
+{
+  "at": "2026-10-21T21:52:50.545130+00:00",
+  "behavioral_tests_run": false,
+  "checks": [
+    {
+      "command": [
+        "bash",
+        "-n",
+        "scripts/case1-accept.sh",
+        "scripts/case2-unit.sh"
+      ],
+      "code": 0,
+      "stdout": "",
+      "stderr": ""
+    },
+    {
+      "command": [
+        "node",
+        "--check",
+        "packages/cli/tests/case1-accept.test.mjs"
+      ],
+      "code": 0,
+      "stdout": "",
+      "stderr": ""
+    },
+    {
+      "command": [
+        "node",
+        "--check",
+        "packages/cli/tests/case2-unit.test.mjs"
+      ],
+      "code": 0,
+      "stdout": "",
+      "stderr": ""
+    },
+    {
+      "command": [
+        "git",
+        "diff",
+        "--check"
+      ],
+      "code": 0,
+      "stdout": "",
+      "stderr": ""
+    }
+  ],
+  "retired_port_hits": 127,
+  "unique_changes": 33,
+  "slot": "Requested gander-0071; queued by sage-2191; no CLEAR"
+}
@@ -0,0 +1,233 @@
+[
+  {
+    "id": "M1",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "a84bb266d52a5c078171582e2f9a511becf56421ae218266e3238d704727f6dd",
+    "after": "c25003c6fea2c7693d6b3e38e1986b8397886a8a47b5c6d7c0ddb535e676171b"
+  },
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+    "occurrences": 1,
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+    "occurrences": 1,
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+  },
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+    "before": "a84bb266d52a5c078171582e2f9a511becf56421ae218266e3238d704727f6dd",
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+  },
+  {
+    "id": "M7",
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+    "occurrences": 1,
+    "before": "a84bb266d52a5c078171582e2f9a511becf56421ae218266e3238d704727f6dd",
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+  },
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+  },
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+  },
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+    "occurrences": 1,
+    "before": "1302cfc659ff9073035b99d7b4071aa2c75070da142bb201d2f58a66e113d71f",
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+    "occurrences": 1,
+    "before": "1302cfc659ff9073035b99d7b4071aa2c75070da142bb201d2f58a66e113d71f",
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+  },
+  {
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+    "occurrences": 1,
+    "before": "1302cfc659ff9073035b99d7b4071aa2c75070da142bb201d2f58a66e113d71f",
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+  },
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+    "occurrences": 1,
+    "before": "1302cfc659ff9073035b99d7b4071aa2c75070da142bb201d2f58a66e113d71f",
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+  },
+  {
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+  },
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+    "occurrences": 1,
+    "before": "1302cfc659ff9073035b99d7b4071aa2c75070da142bb201d2f58a66e113d71f",
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+  },
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+    "occurrences": 1,
+    "before": "1302cfc659ff9073035b99d7b4071aa2c75070da142bb201d2f58a66e113d71f",
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+  },
+  {
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+    "file": "scripts/case1-accept.sh",
+    "occurrences": 1,
+    "before": "1302cfc659ff9073035b99d7b4071aa2c75070da142bb201d2f58a66e113d71f",
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+  },
+  {
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+    "file": "scripts/case1-accept.sh",
+    "occurrences": 1,
+    "before": "1302cfc659ff9073035b99d7b4071aa2c75070da142bb201d2f58a66e113d71f",
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+  },
+  {
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+    "file": "scripts/case1-accept.sh",
+    "occurrences": 1,
+    "before": "1302cfc659ff9073035b99d7b4071aa2c75070da142bb201d2f58a66e113d71f",
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+  },
+  {
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+    "file": "scripts/case1-accept.sh",
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+    "before": "1302cfc659ff9073035b99d7b4071aa2c75070da142bb201d2f58a66e113d71f",
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+  },
+  {
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+  },
+  {
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+    "occurrences": 1,
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+  },
+  {
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+  },
+  {
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+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "a84bb266d52a5c078171582e2f9a511becf56421ae218266e3238d704727f6dd",
+    "after": "238b6bc3b2feb64de614aa2e9471dcc58867a3e44ebfad7130917d43101fd6bd"
+  },
+  {
+    "id": "M29",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "a84bb266d52a5c078171582e2f9a511becf56421ae218266e3238d704727f6dd",
+    "after": "f7c5e06f46aea4d5c3fde288eebd732a3265583faef2d38c2b293a7364e299b7"
+  },
+  {
+    "id": "M30",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "a84bb266d52a5c078171582e2f9a511becf56421ae218266e3238d704727f6dd",
+    "after": "d6ceb8529fa508eb48534000666f02fd4bf949dbeeeff03490c51c8d1e4ecf1f"
+  },
+  {
+    "id": "M31",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "a84bb266d52a5c078171582e2f9a511becf56421ae218266e3238d704727f6dd",
+    "after": "c028760cf45fbae6b127b203f32ce208eeb77ea9dd646fee5af9e6e58661a6ec"
+  },
+  {
+    "id": "M32",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "a84bb266d52a5c078171582e2f9a511becf56421ae218266e3238d704727f6dd",
+    "after": "f047a7024b67c1f7a7af503c3cb525b07c83a0e413b845818d3ea9cd0e6f9ea9"
+  },
+  {
+    "id": "M33",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "a84bb266d52a5c078171582e2f9a511becf56421ae218266e3238d704727f6dd",
+    "after": "a197452abed015e81d0620730b95292a89cff84f8f52ea679111b0b71b17ae1d"
+  }
+]
@@ -0,0 +1,461 @@
+# Deferred list
+
+One line per item, written from evidence, never from inertia. Add a line
+when a gap is found and not fixed in the current piece; strike it (move to
+Done at the bottom with the commit) when a piece closes it. Nothing here
+starts on its own; a line becomes a piece only when Jason calls it. Check it
+at every gate. Started 2026-09-12 during the control board MVP.
+
+## Open
+
+- **Inherited Discord engine test intermittency during #1512 review.** Frozen
+  serialized run recorded a tool-turn engine assertion failure and then timed
+  out at 120s. A later full TAP run with a 15s test deadline passed 351/351.
+  Rocko isolated the busy/settled-event test race and missing failure cleanup;
+  Darkwing independently reproduced the event-split assertion. Rocko also reported
+  a timeout-log test race and a separate engine followUp-after-timeout defect.
+  No live incident established. Row21 owner orch-01 notified; no Discord source
+  takeover. Not assumed identical to earlier concurrent hangs.
+  Integration held pending owner disposition; logs and scope in
+  `agents/darkwing/work/relaunch-activity/r1-review.md`. (2026-09-15)
+  Outcome 2026-09-26: 1685deb4 fixed the busy/settled race and the engine no
+  longer sends a follow-up (held prompts). A re-run of the frozen candidate
+  against 21e3e908 passed the serial acceptance command 397/397 three times.
+  Two engine failures remain when tests run concurrently, and they reproduce on
+  clean HEAD without the #1512 files, so they are #1509's (entry below). Sage
+  ruled that #1512 integrates on the serial evidence; it landed in af4203ca.
+  Record: `agents/darkwing/work/relaunch-activity/rerun-2026-09-26.md`.
+
+
+
+- **Registration has no "set by" field.** `mosaic seat task` records the
+  task and `updatedAt` but not who set it, so a human session and the
+  orchestrator look the same on the board. One-line record change; rides
+  with the orchestrator assignment piece. (2026-09-12, #1504)
+- **Usage-limit notice was missed.** Jason reports Rocko exhausted usage without
+  Jason seeing the notice, and is now available again. Investigate where the
+  notice appeared and what operator notification is missing as part of Claude
+  console integration. User-reported, not independently reproduced; no root
+  cause established. Keep outside #1512's relaunch-display scope. (2026-09-15)
+- **Claude Code seats register but get no board row.** Rocko has no Pi
+  session log, and rows come only from Pi logs. Needs a second row source
+  or a Claude-side log reader. (2026-09-12, darkwing's #1504 report)
+  2026-09-15 #1511 live-test preflight reconfirmed no Rocko row: expected
+  `.pi/state/rocko/sessions` discovery directory absent. Its existing repo
+  registration names dead PID 185602, while the verified native lock owner is
+  3707667. No registration repair, discovery expansion or relaunch performed;
+  test write refused before mutation. Evidence:
+  `agents/darkwing/work/task-attribution/backend-live-verification.json`.
+- **Fleet seats (`~/.mosaic`) stay on the old launchers.** No registration,
+  no board reply, no `seat task`. Moving them is the stress test and comes
+  after the WebUI and fleet launch work. (Jason, 2026-09-12)
+- **Comms skill has no rule for senders without a pane.** The board trailer
+  covers it today; if another pane-less sender appears, put the rule in
+  `skills/ms-communications` instead of a second trailer. (2026-09-12, #1505)
+- **Board: multiple sessions per seat, stopping seats, auth beyond
+  loopback.** Out of scope for the MVP by the plan; listed so they are not
+  forgotten. (plan page, Boundaries)
+- **`MOSAIC-STACK-D-001` is Answered, not Completed.** Mark `--completed` in
+  jarvis-brain once Jason says the board answers "who is waiting on me".
+  (2026-09-12)
+- **Uncommitted working tree.** `AGENTS.md` autonomy section,
+  `agents/README.md` Sage row, Dewey's `work/wui` docs and evidence,
+  `docs/plans/reviews/2026-09-08..10_*`, `skills/ms-{arena,blast-radius,
+  board,executive-update,git-operations,technical-writing}`. Jason's edits
+  from before 2026-09-12; they ride along in the next commit that touches
+  them unless staged on purpose. (2026-09-12)
+- **Fleet debt (orch-01, `~/.mosaic`):** `sweep-commit.sh` deny-list regex
+  skips `launch.env`; needs the fix plus a regression test. (2026-09-12)
+- **Parked, not cancelled:** Dewey D05 dashboard mockup work beyond design 3,
+  registry increment 3 (headless identity-env leak), new seat directories.
+  (plan page, 2026-09-12 parking note)
+
+- **Gitea helper response-file hardening.** Predictable `/tmp/gitea-api-response.$$`
+  has no explicit 0600 mode; use `mktemp` with cleanup in a separately reviewed
+  pass. Credential validation and later reread also have a race window. Other
+  non-blocking ledger review notes remain in
+  `reviews/2026-09-12_ledger-verdict.md`. No change beyond the reviewed GET
+  cleanup fix in this piece. Filbert, LEDGER-1506-R1, 2026-09-12, #1506.
+
+- **One shared checkout for every seat and the coordinator.** Any `git add`
+  of a shared file (CURRENT.md, SESSIONS.md, the plan page) commits another
+  seat's in-progress edit under the wrong commit; it happened at f80404f5
+  (dewey's CURRENT.md status note went in with the piece 5 brief, harmless
+  but unowned). Fix candidates: per-seat worktrees, or shared files edited
+  only by the seat named in CURRENT.md. (2026-09-12)
+
+- **Console mockup fields absent from the board API.** Controller, generation,
+  config fingerprint, turn count, goal/report and activity stream are omitted.
+  Workspace paths are shown as board data, not invented registered workspace
+  nodes. Launch, observe, stop, full transcript navigation, command palette and
+  other screens are absent. Existing palette/appearance switches remain on the
+  single page. Revisit only with a new brief. (2026-09-13 UTC, #1507)
+
+- **Board send can turn into a Pi slash command.** `tools/tmux`
+  `send-message.sh` pastes onto whatever is already in Pi's composer without
+  clearing it. On Jason's 2026-09-26 20:10:57Z send, a leftover "/" landed in
+  front of the agent-send header. Pi read it as plain text that time, but the
+  same path could run a board reply as a slash command. Belongs to CHAT-03I/B3.
+  No tools/tmux change until that piece. Found by Dewey in the CHAT-02 brief
+  evidence. (2026-09-26, #1507)
+
+- **Discord wedge restarts have no cumulative stop.** Since 6b R2, a wedged
+  pi ends the connector with exit 1, and the unit restarts it. With
+  turnTimeoutSeconds 600, one cycle takes at least 645 s, longer than the
+  600 s StartLimit window. So a pi that wedges on every prompt restarts once
+  per prompt and never hits the limit. It only happens when someone sends a
+  message, and that person gets an error reply. Sage accepted it for now. The
+  fix is a separate policy (a wedge count kept across restarts). (2026-09-26,
+  #1509, Rocko 6b R2 review)
+- **Connector does not journal the source it started from.** The unit runs
+  from the live checkout, so an automatic restart loads whatever Discord
+  source is in the tree, even uncommitted source. Rocko recommends a startup
+  journal line with HEAD, the dirty state of `packages/discord` and a digest
+  of the runtime files. Until then the rule is that unreviewed Discord source
+  stays uncommitted in the tree only as long as a review needs it.
+  (2026-09-26, #1509)
+- **Index-export suite runs leave Docker networks behind.** Each export
+  directory becomes a compose project, and its `<dir>_default` network
+  stays after the run. On 2026-09-26 the host ran out of address pools. The
+  task and release suites then failed 31 and 3 tests with "all predefined
+  address pools have been fully subnetted". Sage removed its own five stale
+  networks. The dw-* ones are still there. Fix: the export recipe, or the
+  suites, removes the project network on exit. (2026-09-26)
+  2026-09-27: it happened again on the Piece D candidate (task 31 and
+  release 3 failures). Sage removed 12 leftover export networks from
+  other seats, each checked for zero attached containers first, and both
+  suites then passed. Still open.
+
+- **Ledger T3 read: snapshot isolation has no test.** `readT3` runs every
+  query in one read transaction, but no test proves a write landing during
+  the read stays invisible. Filbert's note 4 on the Gate F build (e47ec6da).
+  Notes 1 to 3 go to Darkwing's follow-up. (2026-09-26, #1506)
+- **A T3 sender role with spaces counts as human.** The SetSpark lead's
+  reply to Sage (21:41:24Z) used the role "main content-engine agent". The
+  6a rule requires a one-word role, so the ledger counts that message as
+  human in Sage's row. Gate F reads only Filbert's row, so it is not
+  affected. Filbert found it through the live diagnostic (14 went to 15).
+  Sage asked the SetSpark lead to use a one-word role. The rule stays as
+  it is. (2026-09-26, #1506)
+
+- **Queue tests: the cold-start failure came back (reopened).** Row 33
+  closed this as not reproduced in 20 idle cold runs. On 2026-10-04 Sage's
+  index export of the row 33 candidate ran the nine suites, then
+  `node --test packages/queue/tests/`, and got 147 passed, 1 failed. Sage's
+  recipe threw the output away, so again nobody knows which test failed.
+  Ten more runs all passed 148/148: three reruns in the same export, four
+  under parallel suite load, and three fresh exports run straight after
+  `test-queue.sh`. It needs a first run on a fresh tree after a full
+  suite pass, and even then it's rare. Darkwing's n2 on row 33 (the cold
+  runs were idle) was right. Next time: Sage's export recipe keeps the
+  node test output in a file, so the first failure has a name. Then fix it
+  as its own row. (2026-10-04, #1508)
+- **Queue: `add --issue N` also sets closes to N.** Follow-up rows under
+  an umbrella issue, like rows 31 and 33 under #1508, would close the issue
+  when they finish. Sage narrowed both by hand (revs 36 and 43). Either
+  `add` takes `--closes` or the lead checks closes on every add. Not
+  urgent while Sage adds the rows. (2026-10-04, #1508)
+
+- **Ledger metric call can orphan curl.** The metric call in
+  `packages/ledger/src/ledger.mjs` still relies on execFileSync's
+  timeout, which kills the helper but can leave curl running. E's queue
+  calls already use `timeout -s KILL`; the metric call should match.
+  (2026-09-27, #1508)
+- **Ledger: a missing `timeout` command reads as a Gitea failure.** With
+  no `timeout` on PATH the queue issue calls report "credential or Gitea
+  request failure". Optional test and clearer message. Filbert, E r2.
+  (2026-09-27, #1508)
+- **`review record` doesn't check which issue the verdict comment is on.**
+  Row 5 round 1's request (26671) and Filbert's verdict (26683) are on
+  #1507. Darkwing's verdict 26681 went to #1508, and `review record`
+  accepted it, because only `review resolve` reads the comment back
+  (`checkComment` in `packages/queue/src/review.mjs`). The receipt
+  points at a real comment on the wrong issue. Sage posted a pointer on
+  #1507 (comment 26685). Fix: have `record` check the comment's issue and author the way
+  `resolve` does, or refuse a comment id it can't verify. Found by
+  Filbert. (2026-10-04, #1508)
+- **Host seats launch Pi with `--approve`.** A future `.pi/SYSTEM.md` or
+  `.pi/settings.json` in the checkout would load in every host seat. This
+  is latent, since neither file exists today. Fix in
+  `scripts/agent-host-dev.sh`: pass `--no-approve` and an explicit system
+  prompt. Filbert, meta-harness survey section 8.4. (2026-10-04)
+- **Workers can read provider keys.** The worker container passes
+  `ZAI_API_KEY` and `ANTHROPIC_API_KEY` in the environment, which Pi's
+  `bash` inherits, and Pi's `read` can open the mounted `auth.json`.
+  Slice 1 role tokens stay in the broker (lead decision 47). The workers'
+  own exposure needs a separate piece. Filbert, survey section 8.6.
+  (2026-10-04)
+- **CHAT-03 I1 round 2 follow-ups, for the I3 brief.** Neither reviewer
+  held any of these as blocking (Darkwing comment 26690, Filbert comment
+  26694 on #1507). Four of the five are closed by slice 1 S5 (see Done);
+  this one stays open.
+  - No test proves that the processes are listed only after the cgroup
+    is frozen. The code waits for `frozen 1` in `cgroup.events`, and
+    both Filbert and Dewey confirmed it by reading it. Mutants r2-B5b and
+    C4 survive. Proposed: a test-only hold after `members`, or a FUSE or
+    privileged fixture. Filbert F1.
+  (2026-10-04, #1507)
+- **CHAT-03 `engine.envKeys` accepts founder credential names.**
+  `CREDENTIAL_NAME` in `packages/conversation/src/pi-pin.mjs` matches any
+  `*_API_KEY` or `*_TOKEN`, including `GITEA_TOKEN` and `GH_TOKEN`, which
+  the S6 runner refuses as founder credentials (REQ-CRED-2). Nothing
+  builds a Controller outside the tests yet. Whoever wires the entry point
+  narrows the pattern to provider names or checks the founder list.
+  Filbert N2 on #1522. (2026-10-10)
+- **`test-task.sh` makes a live Pi call without the Docker guard.** The
+  "user recall" block near line 478 runs `run-task.sh` with no
+  availability check, so a run with Docker unavailable fails "user recall
+  run succeeds" and "recalled user name" (26 pass, 2 fail). The other
+  live groups skip. Rocko hit it during the S2 suites. Wrap the block in
+  the same guard as the other live groups, so a seat without provider
+  access gets clean skips. (2026-10-04, #1519)
+- **`node --test <dir>/` fails on Node 24.** Node 24 reads a directory
+  argument as a module, so every package's test command in that form
+  fails there, while Node 26 accepts it. The glob form
+  (`node --test 'packages/x/tests/*.test.mjs'`) works on both. Package
+  READMEs, `docs/TOOLS.md` and Sage's suite recipe should use the glob
+  form wherever Node 24 is a target. Darkwing, S1 packet. (2026-10-04,
+  #1518)
+- **`stack-upgrade.sh` doesn't check `$REPO`.** Nothing confirms the
+  source checkout is root-owned or that its tree is clean before the
+  upgrade builds from it. Filbert N2 on row 233 (29922, #1735).
+  (2026-10-21)
+- **`stack-upgrade.sh` has no signal handling between A2 and A5.** A HUP,
+  INT or TERM in that stretch leaves the run failed closed, but recovery
+  is by hand. A trap that writes the stop point and the recovery step to
+  the log would make it a sheet step. Filbert N3 on row 233 (29922,
+  #1735). (2026-10-21)
+- **`checkCreative` doesn't refuse `credentials`.** Row 213's
+  `checkCreative` (packages/business/src/role.mjs:143 at 2d2ad2760)
+  limits a creative role's tools, authority and messaging, but a role
+  file that gave companion or research a credential would still load.
+  The business file could then map a credential to that instance
+  (business.mjs:157). Nobody has traced whether a mapped credential
+  reaches the run's environment. The decision paths stay closed (M6),
+  but a creative role with `web` holding a live token is a wider channel
+  than design 4 means. The fix: refuse any `credentials` in
+  `checkCreative`, with a role.test.mjs case. It goes after row 213
+  lands, as a follow-up row or in the next row that edits role.mjs.
+  Webby N1 on row 213 r3 (REVIEW-r3.md, 3ab3c010b), mos-1160.
+  (2026-10-21)
+- **The boot host check orders only one business's bus.**
+  `mosaic-hostcheck.service` (row 240) has
+  `[email protected]`. `case2-unit.sh` enables the
+  bus as `mosaic-bus@<business>.service`, so on a host whose business id
+  isn't `mosaic-stack` nothing orders the two. The bus can start before
+  the boot stop runs, and after a boot-time drift role sessions can use
+  bwrap until it does. The fix: `After=mosaic-hostcheck.service` in
+  `packages/cli/systemd/mosaic-bus.service.in`, which orders every
+  instance and does nothing where the unit isn't installed. It goes in
+  before the first install whose business id isn't `mosaic-stack`.
+  Filbert N1 on row 240 (29945, #1746). (2026-10-21)
+- **The run sheet writes the apt hook before the first `--check`.**
+  Section 4 installs `80mosaic-hostcheck`, then runs
+  `hostcheck.sh --check`. If that check fails, the next package run
+  closes bwrap before anyone has read the failure. It fails closed, but
+  it surprises an installer. The fix: run `--check` first, or say what a
+  failure at that step means. Doc-only, for the next row that edits
+  `docs/guides/host-run-sheet.md`. Filbert N2 on row 240 (29945, #1746).
+  Filbert's N3, that a closed bwrap appends to `DRIFT` on every later
+  apt run and boot, is by design; ops-01's STATE read should expect the
+  repeats. (2026-10-21)
+- **The sso-config first-step hint has no business.** When the target
+  copy has no `console.sso`, `stack-release.sh` (`:938`) refuses with
+  "activate $TO without --sso first, then ... activate $TO --sso". The
+  usage line is `activate ID BUSINESS` (`:47`), so pasting either command
+  as printed gives a usage error, not the first step. It fails safe,
+  since the usage error changes nothing. The fix: add `$BUSINESS`
+  (set at `:2138`) to both commands, and the business (`acme`)
+  to the three expected strings in `stack-release.test.mjs`
+  (`:1538`, `:1689`, `:1691`). For a later row that edits
+  `stack-release.sh`. Webby N1 on row 238 r1 (REVIEW-r1.md, 433a95292,
+  #1744). (2026-10-21)
+- **Lane image prep inspects a base that BuildKit never tagged.**
+  (N7 of the row 197 proof.) After the Compose build,
+  `scripts/testing/lane-image.mjs:41` (`prepareImage`) runs
+  `docker image inspect node:24-bookworm-slim` to put the base digest
+  in the receipt. BuildKit resolves the base from the registry
+  without tagging it in the local store, so on a host without the tag
+  the inspect throws "No such image" after a good build. That
+  happened in Sage's proof try 1 (2026-10-21 09:03Z, run cf48efccf083).
+  The throw fails closed: the run's terminal record is unclean, both
+  lanes quarantine, and `gate-lane.sh recover` clears them. Pulling the
+  base first fixes it, and the receipt digest then matches what the
+  build used (91acba91 both ways). The fix: before the build, inspect
+  the base and refuse with a named reason if it's missing, or pull it.
+  After the build, refuse if the base digest changed. Add a test with a
+  fake Docker that has no base tag. Kept out of row 197 r6 by Sage
+  (sage-1883). Mos asked for this record in mos-1162. (2026-10-21)
+- **Case 1 acceptance script: root parses with the node it's checking, and the header says less than root does.**
+  (Duckworth N1-N3 on the row 195 manifest, REVIEW-m1 6afcee2a5.)
+  N1: F9 runs `$ROOT$NODE` as root (`scripts/case1-accept.sh:298`)
+  before F10 checks that `--node` is the `/opt/mosaic-stack/node-<pin>`
+  path (:303-304). On a host installed as designed, `case2-unit.sh:128-133`
+  refused a non-root-owned `--node` and the args file is root's, so no
+  escalation path exists today. Run F9's parse through `AS_USER`, or
+  apply F10's path check first. N2: the header (:10) and the TOOLS.md
+  entry say root only reads, but root also runs `curl` (F2), `sudo -l`
+  (P1, P3), the jarvis probe (P9), `hostcheck.sh --check` and
+  `systemctl`. Doc-only. N3: F6's prefix match (:261) accepts a
+  `--claude` with `..` after `claude-<pin>/`. That claude runs only as
+  `mosaic`, and F10 uses equality. Darkwing has a follow-up on
+  `darkwing/row195-n1` 1e3c4767c, not yet run; it gets its own row now
+  that 195 has landed (b65014647), Duckworth reviews. (2026-10-21)
+- **Morgana's row 213 mutation set: the B3 pattern no longer matches `bundle.mjs`.**
+  (Webby N3 on row 221 round 1, REVIEW-r1 a0a00630e.) Row 221's
+  candidate changes `packages/harness/src/bundle.mjs`, and the B3
+  anchor at Morgana's 213 `mutants.py:48` stops matching on that
+  base. This matters only if someone reruns that set. Fix the anchor
+  in that tooling before any rerun, and check that a stale anchor
+  refuses instead of skipping the mutant (sage-1941). (2026-10-21)
+- **Grant executor test X5 starts a `sleep 30` that can outlive its test.**
+  (Webby N1 on row 248 r1, webby-0080; deferred by Duckworth in the row
+  249 review, REVIEW-r1 28174fe08, #1751 comment 30070.) The test at
+  `packages/bus/tests/grant-executor.test.mjs:989` (:934 before row
+  249) runs `sleep 30` on the sshd side, where an abort doesn't reach it. Fix it with a stub
+  that exits once its test dir is gone, as row 248 did for the hold
+  stubs, or with a shorter sleep. This binds the next row that touches
+  that test file. Until then, a lane cleanup that runs after this file
+  waits 30 s before it calls a lone `sleep 30` a leak. The row 197
+  lanes scan only at lane end, about 15 minutes after pkg-bus, so they
+  can't see it (mos-1169). (2026-10-21)
+
+- **Row 66 live checks: the unslop notice on a live managed session, both harnesses.**
+  (mos-1186, Vikunja #454.) Row 66's gate asked for one landing session per
+  harness with a prompt that draws a known tell. Mos changed that gate. The
+  Claude Code session ran before landing on a scratch root from the
+  candidate tree (run r4ab24630d323, landed 2c38325ec). Pi ran launch only there (run r1dd94171bede):
+  this host has no credential pi reads until P19 #383 settles. Two live
+  checks remain. Claude Code: in the first re-pin whose tree includes row 66,
+  backup first (Q173). Pi: one full session with a tell after #383. Each
+  attaches the operator note on the RESULT, the next-turn correction and the
+  `unslop.jsonl` counts. (2026-10-21)
+
+- **Console tester listener: `testerNoSignIn` is a dead parameter.**
+  (Duckworth N2 on the row 196 manifest, REVIEW-m1; carried as C1 in
+  REVIEW-m2 cdbf7b64e, #1694 comment 30156.) Row 196 landed 7247d80c7
+  with the parameter and its comment still at `serve.mjs:472-475` and
+  passed from `webui/src/cli.mjs:109` and `sso.test.mjs:392`. Nothing
+  in `serve.mjs` reads it after the destructure. Remove it, or wire it
+  with a test. This binds the next row that touches
+  `packages/webui/src/serve.mjs`. (2026-10-21)
+- **Console library routes: the tester listener and `library.sync`.**
+  (Duckworth N5 on row 196 round 2, REVIEW-m2 cdbf7b64e.) At 7247d80c7
+  `startServer` (`serve.mjs:475`) takes none of `libraryFile`,
+  `libraryStatus` or `librarySync`, so the callbacks `cli.mjs` passes
+  do nothing yet. The row that adds the Console library routes decides
+  whether the tester listener gets `library.sync`. Duckworth's view is
+  that it shouldn't, because sync is a human write. (2026-10-21)
+- **Console library routes: four library codes still map to 502.**
+  (Dewey N2 on the row 254 manifest, #1759 comment 30173.) Row 254
+  gave six library codes a STATUS entry in `packages/webui/src/bus.mjs`.
+  `library-mapping-invalid`, `library-remote-invalid`,
+  `library-state-invalid` and `library-git` still fall through
+  `busStatus` to 502. The row that adds the Console library routes
+  decides their statuses and gives its `humanCall` for `library.sync`
+  a timeout over 130 seconds. (2026-10-21)
+- **T27 sweep test leaves two `sleep 60` children running.**
+  (Darkwing row 251 slot, darkwing-0113 and darkwing-0117; Dewey on
+  r2, comment 30168.) The sweep test spawns two detached shells,
+  `planted` at `host-run.test.mjs:528` and `decoy` at `:536`, each
+  running `sleep 60; :` with the run dir as `$0`. `sweepRunDir` kills
+  the planted shell by pid (`host-run.mjs:238`), and `t.after` kills
+  only the decoy shell. Neither kill reaches the `sleep` child, so each
+  one lives for up to 60 s after the test and trips any busy check that
+  follows. The fix is to kill the process group in both `t.after`
+  hooks: `process.kill(-pid, 'SIGKILL')`. Each shell is spawned
+  detached, so it leads its own group. `exec sleep 60` doesn't work.
+  The sweep matches the run dir in `/proc/<pid>/cmdline`
+  (`host-run.mjs:236`), and exec drops the `$0` that carries it, so the
+  planted process would survive and the "planted process killed" assert
+  would fail. This binds the next row that touches
+  `packages/bus/tests/host-run.test.mjs`. (2026-10-21)
+- **Real-model suite cases run outside the gate.** Row 244 moved
+  `test-task.sh` fork recall (M11) and user recall (M16) behind
+  `MOSAIC_LIVE_PROVIDER=1`, and `test-release.sh` activations to the mock
+  adapter. Before any re-pin whose tree changes `packages/harness` or the
+  session fork code (`scripts/mosaic-task.mjs` session and
+  `sessionForkFrom` handling, the pi adapter), an operator runs
+  `MOSAIC_LIVE_PROVIDER=1 bash scripts/test-task.sh` with the real pi
+  credential and a real `release.sh activate`, and records both results on
+  the re-pin row. Morgana's wording (row 244 BUILD.md), Webby N2 on row 244
+  r1 (#1757). (2026-10-21)
+
+## Queue
+
+Moved to `docs/plans/QUEUE.md` on 2026-09-13. This file holds only gaps.
+
+## Done
+
+- Ledger (piece 3, #1506): shipped cd0aa5fb, Gate D written 2026-09-12 (18.9 human messages per closed issue).
+- Relaunched seat shows the old last message (darkwing, Step 3 log, 2026-09-12): closed by #1512 relaunch activity, af4203ca. Filbert authored it; Darkwing and Dewey reviewed. The live board restart and Gate F remain separate.
+- Sage launcher hook uncommitted (2026-09-12): closed by the agents/sage launch files commit, Dewey review R1 revise, R2 approve (`agents/dewey/work/sage-launch-review-2026-09-26.md`), launcher test now covers sage.
+- Ledger counts T3 agent messages as human (2026-09-26, #1506): fixed in ef0020ad (Darkwing 6a, Filbert reviewed). `messageKind` now counts a T3 header as agent and the control-board sender as board. It changes no current count, because no source the ledger reads has a T3 header yet. That waits for the T3 thread source (Gate F).
+- Control board checked the bind address but not Host or Origin (2026-09-26, #1507, found by Dewey): closed by the board guard commit. `foreignRequest` refuses a non-loopback Host, a wrong port, userinfo or a path in Host, and any foreign Origin on every route. Dewey authored it, and Rocko approved it (`agents/rocko/work/board-guard-review-2026-09-26.md`, 5a12f08e). Rocko's one low finding: URL normalization accepts a root slash, empty userinfo and an empty query in Host, so the notes' wording overstates what the raw-syntax check refuses. No bypass was found.
+- Discord engine: leaked fake pi and the timeout gap in `busy` (2026-09-26, #1509): fixed in 3edb15eb (Darkwing 6b R2, Rocko approved, review ed5510a0). Tests stop the engine in `finally`. A turn pi never started now stops pi with exit 1 instead of guessing, and the unit restarts it. Known limit: see the open entry on wedge restarts.
+- Combined concurrent test hangs (2026-09-14, #1509): closed on evidence from 3edb15eb. At default concurrency the union passed 406/406 three times on the R2 snapshot and 408/408 on the commit's index, where clean HEAD had hung four runs out of four. The inherited-intermittency entry from 2026-09-15 stays open until a later run shows it is the same cause.
+- A nested `node --test` passes even when its tests fail (2026-09-26, #1508): closed. Queue A1 (34a72af9) clears NODE_TEST_CONTEXT on its own path. N13 fixes `test-foundation.sh` and `test-discord.sh`, each with a check that fails the suite if the clearing is lost. Darkwing wrote it (n13.patch 00868b2f) and Filbert approved it (e464be6c). Sage's grep on 2026-09-27 finds no other nested `node --test`: in scripts, only the two suites, `test-queue.sh` and `queue-commit.sh`, and in JS, only the queue test that covers the fix.
+- SetSpark service accepted any string as a decision approver (2026-09-26, #1509): closed. Fixed in shared-signals cc74d92 (Rocko approved R2, lead decision 24). The operations seat (T3 12fe8cda) deployed it to VM 1022 at 00:23Z on 2026-09-27. The running `service.py` hash matches cc74d92, and `/healthz` returns 200 inside the network and through the public tunnel. The read-only README survey found one row breaking the rule (DEC-009, Proposed, version 1), one open request that isn't ready (DEC-009's), and no Accepted decision with more than 16 approvers. No rows changed. DEC-009 stays as stored (lead decisions 21 and 28). The service now refuses approvals on it, so nothing can go wrong silently. Side effect: `up -d` also recreated caddy, about 20 s of edge downtime for all hosts. That is for the shared-signals deploy procedure to fix, not Mosaic.
+- Queue suite failed its live checks outside the canonical checkout
+  (2026-09-27, #1508): closed by Piece D, f539466f. `test-queue.sh` now
+  skips `verify` and `render --check` with a printed reason when the
+  toplevel isn't the recorded `canonicalRoot`. An index export passed
+  27/0, and the canonical checkout 29/0.
+- Queue: an owner listed as a reviewer blocked the row (2026-09-27,
+  #1508): closed by row 31, bb2fa970. `add`, `set reviewers` and `assign`
+  now refuse the owner as a reviewer with exit 2 and write nothing. Rocko
+  built it in the Gate G run, and Filbert approved round 1 (#1508 comment
+  26629, 8 of 8 mutants caught).
+- Queue follow-ups from rows 12, 13 and 31 (2026-10-04, #1508): closed by
+  row 33, 6fb50cc0. Filbert built it, and Darkwing approved round 1
+  (#1508 comment 26651).
+  - `genesis` refuses a map row whose owner is one of its reviewers (exit
+    2, nothing written). The check is on the map, not in replay, so a log
+    from before the rule still loads.
+  - The `assign` refusal now reads "can't assign row N to SEAT: SEAT is
+    one of its reviewers".
+  - `queue-commit.sh` compares HEAD with H before each canary and again if
+    the clean run fails. A moved HEAD exits 2 with "HEAD moved since H was
+    recorded"; the guard message is kept for a real guard failure.
+  - Every time and date the validator accepts must format back to itself,
+    so month 13, day 32, 2026-02-30, 2027-02-29 and 24:00 are refused.
+    The live log at rev 45 still replays.
+  - The cold-start failure (2026-09-27): not reproduced in 20 cold runs.
+    Each ran `node --test packages/queue/tests/` in a fresh tree, 10
+    shared clones and 10 exports, one after another. All 20 passed
+    148/148 (2960 of 2960). The 300 ms deadline test is unchanged. Counts:
+    `agents/filbert/work/queue-33/cold-runs.txt`.
+- CHAT-03 I1 round 2 follow-ups (2026-10-04, #1507): four of five closed
+  by slice 1 S5 (row 40, #1522; Dewey authored, Darkwing and Filbert
+  reviewing). The commit is named in the row's review record when it
+  lands.
+  - Engine command and `preArgs`: `engine` takes only `extraArgs`, `cwd`
+    and `envKeys`. The controller always launches the pinned Pi and
+    checks that at construction and at bind. The fake engine comes in
+    through a symbol key that JSON config can't carry (N24b).
+  - Engine environment: an explicit list (`ENGINE_ENV` in `pi-pin.mjs`)
+    plus `*_API_KEY` and `*_TOKEN` names from `engine.envKeys`. Nothing
+    else is inherited. `HOME` passes, so Pi reads `~/.pi/agent` unless
+    `PI_CODING_AGENT_DIR` is set (Darkwing F3).
+  - `escalating` is cleared when the force-stop fence throws (Darkwing F2,
+    races.test.mjs).
+  - Takeover then Enter in one chunk: input after Ctrl-T or Ctrl-O waits
+    for that action, in the same chunk or a later one, and also while an
+    earlier action is still pending, so it is judged as if typed one key
+    at a time (Filbert F2; Darkwing and Filbert T1 on #1522;
+    flows.test.mjs).
+  The frozen-cgroup test (Filbert F1) stays open above.
+- Gate runs mount the host's pi auth file (Webby N4 on the row 197 proof
+  driver, 059577886): closed by row 244 (#1757), landing e69260a3c. The
+  suites and the lane's `cleanEnv` export a 0600 fixture `PI_AUTH_FILE`,
+  `guardDocker` refuses a Compose run without one, and
+  `packages/cli/tests/gate-lane-auth.test.mjs` proves no gate step mounts
+  the host default. The real-model cases this moved off the gate are open
+  above.
+
+## Row253 F5: legacy Case AS_USER supervision
+
+Tracked as row 276, Gitea #1781 (sage-2331), owner Gander, reviewer Duckworth, after row253.
+Brief: docs/plans/2026-10-22_case-sudo-legacy-followup.md, “Brief: supervised legacy AS_USER calls”.
+
+case1-accept.sh's legacy timeout330 around AS_USER talk and its AS_USER precheck, Claude version, PM launches and Node version diagnostics predate the new socket metadata/probe helpers. sudo's pty monitor can move them to a separate session; the old outer timeout does not prove their descendants are killed. The C4 repair in row253 covers only its new config query and peer probe. These legacy paths need the reviewed supervisor or a header explicitly explaining why each remains unsupervised. The follow-up must preserve the 300-second talk/reply contract, concurrent F5 scan, diagnostics and secret-output refusals, with fake-only session-hop tests and Sage's slot. No host or live unit change is authorized.
@@ -0,0 +1,10 @@
+{
+  "agents/gander/work/queue-253/c4/case1-accept.sh.txt": {
+    "source": "scripts/case1-accept.sh",
+    "sha256": "1302cfc659ff9073035b99d7b4071aa2c75070da142bb201d2f58a66e113d71f"
+  },
+  "agents/gander/work/queue-253/c4/case2-unit.sh.txt": {
+    "source": "scripts/case2-unit.sh",
+    "sha256": "a84bb266d52a5c078171582e2f9a511becf56421ae218266e3238d704727f6dd"
+  }
+}
@@ -0,0 +1,44 @@
+# C4 repair for the short static pass
+
+Prepared under duckworth-0111 and sage-2325/2331. No tests, syntax execution, probe, real sudo or host experiment ran on this repair. No passing claim applies to these new product bytes. DESIGN.md and the approved DESIGN-C4.md remain unchanged. The original frozen snapshots remain unchanged.
+
+REPAIR.diff compares the repaired scripts against their original frozen source, and tests/docs against 968db0bcd. The *.repair.txt files are non-executable exact snapshots of all seven pending source/test/doc paths. REPAIR-SHAS.json pins them. The live source/test paths remain uncommitted until the gate permits the product commit.
+
+## Conditions mapped to the diff
+
+C1: fixed setsid without -f/-w; confirm the direct child's kernel SID equals its PID. M38 drops setsid; exact inner-timeout tests must kill it by observing inner-session instead.
+
+C2: exact inner/outer/output-limit refusals in both fake modes, query 5/7 s and probe 2/4 s. Outer cases require at least the outer duration and less than outer + 2 s. Root discards the valid-looking stdout of a stalled supervisor. A trusted notice plus status 137 identifies the outer timer.
+
+C3: read complete stat files, strip through the last closing parenthesis followed by space, skip vanished entries, refuse on other errors. The setpgid member has newline, closing parenthesis and space in comm. M36 kills only the leader group and must fail that case. The existing 250 ms cleanup budget and 50 x 10 ms post-return test polling remain.
+
+C4: DEFERRED.md names row 276 / #1781 and the brief from sage-2331. It is an intended manifest path. UPSTREAM-PATHS.json records the requested comparison. Current upstream DEFERRED.md was preserved before our entry.
+
+C5: the test compares both inline payloads byte for byte; M39 adds a comment to only one. Both payloads were prepared from supervisor-source.txt.
+
+N1: the fake reads its mode with the Bash file-read builtin form. N2: fixture cleanup rechecks SID before each kill, including members discovered by an owned-session scan. N3: exec mode cannot safely scan the runner's session, so it checks exact PIDs and says so; hop mode checks all members of self-led recorded sessions. N4: the fake still makes no synthetic HUP on its own death. N5: polling remains bounded at 500 ms. N6: the packet must be published before the manifest round.
+
+## Line references in matching repair snapshots
+
+- scripts/case2-unit.sh:162: `stat_fields()`
+- scripts/case2-unit.sh:180: `clean_session()`
+- scripts/case2-unit.sh:220: `"$setsid_bin" "$@"`
+- scripts/case2-unit.sh:221: `for ((attempt=`
+- scripts/case2-unit.sh:240: `tester_tools()`
+- scripts/case2-unit.sh:270: `tester_capture()`
+- packages/cli/tests/case2-unit.test.mjs:192: `for(const kind`
+- packages/cli/tests/case2-unit.test.mjs:219: `C4 stalled supervisor`
+- packages/cli/tests/case2-unit.test.mjs:233: `C4 inline supervisor`
+- packages/cli/tests/case-sudo-fixture.mjs:21: `case_sudo_run()`
+- packages/cli/tests/case-sudo-fixture.mjs:84: `function sessionPairs`
+- packages/cli/tests/case-sudo-fixture.mjs:75: `function killPairs`
+- packages/cli/tests/case1-accept.test.mjs:309: `C4 acceptance query inner`
+- packages/cli/tests/case1-accept.test.mjs:322: `C4 acceptance query outer`
+- packages/cli/tests/case1-accept.test.mjs:345: `for(const fault`
+- docs/plans/DEFERRED.md:456: `## Row253 F5`
+
+## Proposed next gate
+
+On Sage CLEAR after static approval: both touched files whole, M1-M39 with passing focused bases and byte-identical restoration, CLI whole, WebUI whole and the ten shell files. Previous completed results are historical only because product blobs changed. Use a gXXXXXX TMPDIR under /mnt/storage/scratch/tmp, pipefail and tee, a busy check before every launch, and log/wrapper names that do not match the busy detector. Stop and report according to the new grant.
+
+REPAIR.diff uses zero context so blank context lines in the stored patch do not trigger whitespace checks on the record itself. The full matching snapshots provide surrounding context.
@@ -0,0 +1,30 @@
+{
+  "scripts/case2-unit.sh": {
+    "frozen_before": "a84bb266d52a5c078171582e2f9a511becf56421ae218266e3238d704727f6dd",
+    "repair": "3ec41265b47770f70d60640a786b4f547ffb0157512fd8477ea7712e91a724fe"
+  },
+  "scripts/case1-accept.sh": {
+    "frozen_before": "1302cfc659ff9073035b99d7b4071aa2c75070da142bb201d2f58a66e113d71f",
+    "repair": "f93eac4cc9dd9fc95a67be19d9fa7c7f6e7d7bfc84e662360b4aed05763850c7"
+  },
+  "packages/cli/tests/case-sudo-fixture.mjs": {
+    "frozen_before": "5c2cf5408944f8c1715355f75e2510a8deee814b90e2b44befb5a7dff411d6b7",
+    "repair": "b259b8c7926e49829c8a956674021cb0cc85ddd65aebdc786d05cc08d7790008"
+  },
+  "packages/cli/tests/case2-unit.test.mjs": {
+    "frozen_before": "83cd18f05e60d489e4b0e581d9d977fbf86f897ea3d0bddaa13a63e86f22321f",
+    "repair": "72a07e9ad9d5c8bb01851eef18f792f2fe9b95d56803e313fad6aa1f1d6c3e8c"
+  },
+  "packages/cli/tests/case1-accept.test.mjs": {
+    "frozen_before": "3ed99803a7e3f81d8dce62e0577cd6c86b70a0339e688c0124bcb10d149e8de9",
+    "repair": "6cfd2963303315aa6911c4d4f6d75d3ab87d9fcba8e128b056216e7f85fd8901"
+  },
+  "packages/webui/README.md": {
+    "frozen_before": "04b7c1165c4fa73137a72e8373d70fd7d96a5897b5511170e6d41908a7667e96",
+    "repair": "2eeb1f79324f64463a9b3427e67492d672b8d1c14db6c0349c7de17d89e52fc9"
+  },
+  "docs/plans/DEFERRED.md": {
+    "frozen_before": "cadfb704f03e1bfcd36e56ca7a1a3636955004e7d96be9b8765f35ea750da053",
+    "repair": "67bbf7bf57aa70dcade36ca4642f01cccb71ce01c130a88b84e1edb7ea674377"
+  }
+}
@@ -0,0 +1,684 @@
+--- a/scripts/case2-unit.sh
+++ b/scripts/case2-unit.sh
+@@ -19 +19,4 @@
+-# dependencies. It renders the default instance only.
+# dependencies. The inner query supervisor runs after the uid drop: 5 s inside,
+# 7 s on root's wait. Fixed system Bash, setsid, sleep, timeout and head are
+# resolved and root-validated. Only the config query uses this supervisor.
+# It renders the default instance only.
+@@ -153,0 +157,113 @@
+# row253-supervisor-begin
+IFS= read -r -d '' TESTER_SUPERVISOR <<'MOSAIC_TESTER_SUPERVISOR' || :
+set +m
+seconds="$1" setsid_bin="$2" sleep_bin="$3"; shift 3
+child="" timer="" verified=0
+stat_fields() {
+    local pid="$1" raw rest
+    if ! raw="$(<"/proc/$pid/stat")" 2>/dev/null; then
+        [ -e "/proc/$pid/stat" ] && return 1
+        return 3
+    fi
+    [ -n "$raw" ] || { [ -e "/proc/$pid/stat" ] && return 1; return 3; }
+    rest="${raw##*) }"
+    [ "$rest" != "$raw" ] || return 1
+    read -r ST_STATE ST_PARENT ST_GROUP ST_SESSION _ <<< "$rest"
+    [[ "$ST_STATE" =~ ^[A-Za-z]$ && "$ST_SESSION" =~ ^[0-9]+$ && "$ST_GROUP" =~ ^[0-9]+$ ]]
+}
+clock_cs() {
+    local boot spare
+    read -r boot spare < /proc/uptime || return 1
+    [[ "$boot" =~ ^([0-9]+)\.([0-9]{2})$ ]] || return 1
+    CLOCK_CS=$((10#${BASH_REMATCH[1]} * 100 + 10#${BASH_REMATCH[2]}))
+}
+clean_session() {
+    local entry pid rc live until
+    clock_cs || return 1
+    until=$((CLOCK_CS + 25))
+    while :; do
+        live=0
+        for entry in /proc/[0-9]*/stat; do
+            pid="${entry%/stat}"; pid="${pid##*/}"
+            rc=0; stat_fields "$pid" || rc=$?
+            [ "$rc" != 3 ] || continue
+            [ "$rc" = 0 ] || return 1
+            [ "$ST_SESSION" = "$child" ] || continue
+            case "$ST_STATE" in Z|X) continue ;; esac
+            live=1
+            if ! kill -KILL "$pid" 2>/dev/null; then
+                rc=0; stat_fields "$pid" || rc=$?
+                [ "$rc" = 3 ] || { [ "$rc" = 0 ] && { [ "$ST_STATE" = Z ] || [ "$ST_STATE" = X ]; }; } || return 1
+            fi
+        done
+        [ "$live" != 0 ] || return 0
+        clock_cs || return 1
+        [ "$CLOCK_CS" -lt "$until" ] || return 1
+        "$sleep_bin" 0.01
+    done
+}
+finish() {
+    local rc="$?"
+    trap - EXIT HUP INT TERM
+    if [ "$verified" = 1 ]; then
+        clean_session || rc=86
+    elif [ -n "$child" ]; then
+        kill -KILL "$child" 2>/dev/null || :
+    fi
+    [ -z "$child" ] || wait "$child" 2>/dev/null || :
+    if [ -n "$timer" ]; then kill -KILL "$timer" 2>/dev/null || :; wait "$timer" 2>/dev/null || :; fi
+    exit "$rc"
+}
+trap finish EXIT
+trap 'exit 88' HUP INT TERM
+"$sleep_bin" "$seconds" & timer=$!
+"$setsid_bin" "$@" & child=$!
+for ((attempt=0; attempt<100; attempt++)); do
+    rc=0; stat_fields "$child" || rc=$?
+    [ "$rc" = 0 ] || exit 85
+    if [ "$ST_SESSION" = "$child" ]; then verified=1; break; fi
+    kill -0 "$timer" 2>/dev/null || exit 81
+    "$sleep_bin" 0.002
+done
+[ "$verified" = 1 ] || exit 85
+while kill -0 "$child" 2>/dev/null; do
+    kill -0 "$timer" 2>/dev/null || exit 81
+    "$sleep_bin" 0.01
+done
+kill -0 "$timer" 2>/dev/null || exit 81
+rc=0; wait "$child" || rc=$?
+[ "$rc" = 0 ] || exit 87
+exit 0
+MOSAIC_TESTER_SUPERVISOR
+# row253-supervisor-end
+
+tester_tools() {
+    local input target p st magic
+    TS_BASH="" TS_SETSID="" TS_SLEEP="" TS_TIMEOUT="" TS_HEAD=""
+    for input in /bin/bash /usr/bin/setsid /usr/bin/sleep /usr/bin/timeout /usr/bin/head; do
+        target="$(realpath -e -- "$input" 2>/dev/null)" || return 1
+        case "$target" in /home/*|/root/*|/run/user/*) return 1 ;; esac
+        [ -f "$target" ] && [ -x "$target" ] && [ ! -L "$target" ] || return 1
+        p="$target"
+        while :; do
+            st="$(stat -c '%u %a' -- "$p" 2>/dev/null)" || return 1
+            [ "${st% *}" = 0 ] && [[ "${st#* }" =~ ^[0-7]{3,4}$ ]] && (( (8#${st#* } & 8#022) == 0 )) || return 1
+            [ "$p" != / ] || break
+            p="${p%/*}"; [ -n "$p" ] || p=/
+        done
+        magic="$(/usr/bin/od -An -tx1 -N4 -- "$target" 2>/dev/null | tr -d ' \n')"
+        [ "$magic" = 7f454c46 ] || return 1
+        case "$input" in
+            /bin/bash) TS_BASH="$target" ;; /usr/bin/setsid) TS_SETSID="$target" ;;
+            /usr/bin/sleep) TS_SLEEP="$target" ;; /usr/bin/timeout) TS_TIMEOUT="$target" ;;
+            /usr/bin/head) TS_HEAD="$target" ;;
+        esac
+    done
+}
+tester_capture_reason() {
+    case "$1" in
+        81) echo inner-timeout ;; 82) echo outer-timeout ;; 83) echo output-limit ;;
+        84) echo supervisor-tools ;; 85) echo inner-session ;; 86) echo inner-cleanup ;;
+        *) echo inner-command ;;
+    esac
+}
+@@ -155,5 +271,11 @@
+-    local seconds="$1" maximum="$2" file child="" rc=0; shift 2
+-    file="$(mktemp)" || exit 1
+-    trap 'if [ -n "$child" ]; then kill -KILL -- "-$child" 2>/dev/null || :; wait "$child" 2>/dev/null || :; fi; rm -f -- "$file"' EXIT
+-    trap 'exit 1' HUP INT TERM
+-    timeout --signal=KILL "${seconds}s" /bin/bash -c 'set -o pipefail; maximum="$1"; shift; "$@" | head -c "$((maximum + 1))"' -- "$maximum" "$@" > "$file" 2>/dev/null &
+    local inner="$1" outer="$2" maximum="$3" user="$4" home="$5" path="$6" file notice child="" rc=0; shift 6
+    tester_tools || exit 84
+    file="$(mktemp)" || exit 88
+    notice="$(mktemp)" || { rm -f -- "$file"; exit 88; }
+    trap 'if [ -n "$child" ]; then kill -KILL -- "-$child" 2>/dev/null || :; wait "$child" 2>/dev/null || :; fi; rm -f -- "$file" "$notice"' EXIT
+    trap 'exit 88' HUP INT TERM
+    LC_ALL=C "$TS_TIMEOUT" --verbose --signal=KILL "${outer}s" "$TS_BASH" -c '
+        set -o pipefail
+        maximum="$1"; head_bin="$2"; shift 2
+        "$@" 2>/dev/null | "$head_bin" -c "$((maximum + 1))"
+    ' -- "$maximum" "$TS_HEAD" sudo -u "$user" -H env -i "HOME=$home" "PATH=$path" "$TS_BASH" -c "$TESTER_SUPERVISOR" -- "$inner" "$TS_SETSID" "$TS_SLEEP" "$@" > "$file" 2> "$notice" &
+@@ -163 +285,4 @@
+-    [ "$rc" = 0 ] && [ "$(wc -c < "$file")" -le "$maximum" ] || exit 1
+    # Only GNU timeout and the trusted head can write this root-side channel.
+    if [ "$rc" = 137 ] && [[ "$(<"$notice")" == *': sending signal KILL to command '* ]]; then exit 82; fi
+    [ "$(wc -c < "$file")" -le "$maximum" ] || exit 83
+    [ "$rc" = 0 ] || { case "$rc" in 81|85|86|87|88) exit "$rc" ;; *) exit 87 ;; esac; }
+@@ -165,0 +291 @@
+
+@@ -259 +385 @@
+-            query="$(tester_capture 5 4096 sudo -u "$USER_NAME" -H env -i "HOME=$HOME_DIR" "PATH=$UNIT_PATH" "$NODE" --input-type=module -e "$TESTER_QUERY" "$COPY/packages/cli/src/config.mjs" "$COPY/packages/webui/src/cli.mjs")" || die "tester config query failed"
+            query="$(tester_capture 5 7 4096 "$USER_NAME" "$HOME_DIR" "$UNIT_PATH" "$NODE" --input-type=module -e "$TESTER_QUERY" "$COPY/packages/cli/src/config.mjs" "$COPY/packages/webui/src/cli.mjs")" || die "tester config query $(tester_capture_reason "$?")"
+--- a/scripts/case1-accept.sh
+++ b/scripts/case1-accept.sh
+@@ -18,0 +19,4 @@
+# The config/probe supervisor is fixed root-validated system Bash plus setsid
+# and sleep, after the uid drop: query inner/outer 5/7 s, probe 2/4 s. Root
+# independently bounds its sudo wait. Legacy AS_USER talk and diagnostics below
+# retain their old behavior and are NOT covered by this supervisor (F5 follow-up).
+@@ -110,0 +115,113 @@
+# row253-supervisor-begin
+IFS= read -r -d '' TESTER_SUPERVISOR <<'MOSAIC_TESTER_SUPERVISOR' || :
+set +m
+seconds="$1" setsid_bin="$2" sleep_bin="$3"; shift 3
+child="" timer="" verified=0
+stat_fields() {
+    local pid="$1" raw rest
+    if ! raw="$(<"/proc/$pid/stat")" 2>/dev/null; then
+        [ -e "/proc/$pid/stat" ] && return 1
+        return 3
+    fi
+    [ -n "$raw" ] || { [ -e "/proc/$pid/stat" ] && return 1; return 3; }
+    rest="${raw##*) }"
+    [ "$rest" != "$raw" ] || return 1
+    read -r ST_STATE ST_PARENT ST_GROUP ST_SESSION _ <<< "$rest"
+    [[ "$ST_STATE" =~ ^[A-Za-z]$ && "$ST_SESSION" =~ ^[0-9]+$ && "$ST_GROUP" =~ ^[0-9]+$ ]]
+}
+clock_cs() {
+    local boot spare
+    read -r boot spare < /proc/uptime || return 1
+    [[ "$boot" =~ ^([0-9]+)\.([0-9]{2})$ ]] || return 1
+    CLOCK_CS=$((10#${BASH_REMATCH[1]} * 100 + 10#${BASH_REMATCH[2]}))
+}
+clean_session() {
+    local entry pid rc live until
+    clock_cs || return 1
+    until=$((CLOCK_CS + 25))
+    while :; do
+        live=0
+        for entry in /proc/[0-9]*/stat; do
+            pid="${entry%/stat}"; pid="${pid##*/}"
+            rc=0; stat_fields "$pid" || rc=$?
+            [ "$rc" != 3 ] || continue
+            [ "$rc" = 0 ] || return 1
+            [ "$ST_SESSION" = "$child" ] || continue
+            case "$ST_STATE" in Z|X) continue ;; esac
+            live=1
+            if ! kill -KILL "$pid" 2>/dev/null; then
+                rc=0; stat_fields "$pid" || rc=$?
+                [ "$rc" = 3 ] || { [ "$rc" = 0 ] && { [ "$ST_STATE" = Z ] || [ "$ST_STATE" = X ]; }; } || return 1
+            fi
+        done
+        [ "$live" != 0 ] || return 0
+        clock_cs || return 1
+        [ "$CLOCK_CS" -lt "$until" ] || return 1
+        "$sleep_bin" 0.01
+    done
+}
+finish() {
+    local rc="$?"
+    trap - EXIT HUP INT TERM
+    if [ "$verified" = 1 ]; then
+        clean_session || rc=86
+    elif [ -n "$child" ]; then
+        kill -KILL "$child" 2>/dev/null || :
+    fi
+    [ -z "$child" ] || wait "$child" 2>/dev/null || :
+    if [ -n "$timer" ]; then kill -KILL "$timer" 2>/dev/null || :; wait "$timer" 2>/dev/null || :; fi
+    exit "$rc"
+}
+trap finish EXIT
+trap 'exit 88' HUP INT TERM
+"$sleep_bin" "$seconds" & timer=$!
+"$setsid_bin" "$@" & child=$!
+for ((attempt=0; attempt<100; attempt++)); do
+    rc=0; stat_fields "$child" || rc=$?
+    [ "$rc" = 0 ] || exit 85
+    if [ "$ST_SESSION" = "$child" ]; then verified=1; break; fi
+    kill -0 "$timer" 2>/dev/null || exit 81
+    "$sleep_bin" 0.002
+done
+[ "$verified" = 1 ] || exit 85
+while kill -0 "$child" 2>/dev/null; do
+    kill -0 "$timer" 2>/dev/null || exit 81
+    "$sleep_bin" 0.01
+done
+kill -0 "$timer" 2>/dev/null || exit 81
+rc=0; wait "$child" || rc=$?
+[ "$rc" = 0 ] || exit 87
+exit 0
+MOSAIC_TESTER_SUPERVISOR
+# row253-supervisor-end
+
+tester_tools() {
+    local input target p st magic
+    TS_BASH="" TS_SETSID="" TS_SLEEP="" TS_TIMEOUT="" TS_HEAD=""
+    for input in /bin/bash /usr/bin/setsid /usr/bin/sleep /usr/bin/timeout /usr/bin/head; do
+        target="$(realpath -e -- "$input" 2>/dev/null)" || return 1
+        case "$target" in /home/*|/root/*|/run/user/*) return 1 ;; esac
+        [ -f "$target" ] && [ -x "$target" ] && [ ! -L "$target" ] || return 1
+        p="$target"
+        while :; do
+            st="$(stat -c '%u %a' -- "$p" 2>/dev/null)" || return 1
+            [ "${st% *}" = 0 ] && [[ "${st#* }" =~ ^[0-7]{3,4}$ ]] && (( (8#${st#* } & 8#022) == 0 )) || return 1
+            [ "$p" != / ] || break
+            p="${p%/*}"; [ -n "$p" ] || p=/
+        done
+        magic="$(/usr/bin/od -An -tx1 -N4 -- "$target" 2>/dev/null | tr -d ' \n')"
+        [ "$magic" = 7f454c46 ] || return 1
+        case "$input" in
+            /bin/bash) TS_BASH="$target" ;; /usr/bin/setsid) TS_SETSID="$target" ;;
+            /usr/bin/sleep) TS_SLEEP="$target" ;; /usr/bin/timeout) TS_TIMEOUT="$target" ;;
+            /usr/bin/head) TS_HEAD="$target" ;;
+        esac
+    done
+}
+tester_capture_reason() {
+    case "$1" in
+        81) echo inner-timeout ;; 82) echo outer-timeout ;; 83) echo output-limit ;;
+        84) echo supervisor-tools ;; 85) echo inner-session ;; 86) echo inner-cleanup ;;
+        *) echo inner-command ;;
+    esac
+}
+@@ -112,5 +229,11 @@
+-    local seconds="$1" maximum="$2" file child="" rc=0; shift 2
+-    file="$(mktemp)" || exit 1
+-    trap 'if [ -n "$child" ]; then kill -KILL -- "-$child" 2>/dev/null || :; wait "$child" 2>/dev/null || :; fi; rm -f -- "$file"' EXIT
+-    trap 'exit 1' HUP INT TERM
+-    timeout --signal=KILL "${seconds}s" /bin/bash -c 'set -o pipefail; maximum="$1"; shift; "$@" | head -c "$((maximum + 1))"' -- "$maximum" "$@" > "$file" 2>/dev/null &
+    local inner="$1" outer="$2" maximum="$3" user="$4" home="$5" path="$6" file notice child="" rc=0; shift 6
+    tester_tools || exit 84
+    file="$(mktemp)" || exit 88
+    notice="$(mktemp)" || { rm -f -- "$file"; exit 88; }
+    trap 'if [ -n "$child" ]; then kill -KILL -- "-$child" 2>/dev/null || :; wait "$child" 2>/dev/null || :; fi; rm -f -- "$file" "$notice"' EXIT
+    trap 'exit 88' HUP INT TERM
+    LC_ALL=C "$TS_TIMEOUT" --verbose --signal=KILL "${outer}s" "$TS_BASH" -c '
+        set -o pipefail
+        maximum="$1"; head_bin="$2"; shift 2
+        "$@" 2>/dev/null | "$head_bin" -c "$((maximum + 1))"
+    ' -- "$maximum" "$TS_HEAD" sudo -u "$user" -H env -i "HOME=$home" "PATH=$path" "$TS_BASH" -c "$TESTER_SUPERVISOR" -- "$inner" "$TS_SETSID" "$TS_SLEEP" "$@" > "$file" 2> "$notice" &
+@@ -120 +243,4 @@
+-    [ "$rc" = 0 ] && [ "$(wc -c < "$file")" -le "$maximum" ] || exit 1
+    # Only GNU timeout and the trusted head can write this root-side channel.
+    if [ "$rc" = 137 ] && [[ "$(<"$notice")" == *': sending signal KILL to command '* ]]; then exit 82; fi
+    [ "$(wc -c < "$file")" -le "$maximum" ] || exit 83
+    [ "$rc" = 0 ] || { case "$rc" in 81|85|86|87|88) exit "$rc" ;; *) exit 87 ;; esac; }
+@@ -122,0 +249 @@
+
+@@ -196 +323 @@
+-QUERY="$(tester_capture 5 4096 sudo -u "$S_USER" -H env -i "HOME=$S_HOME" "PATH=$(dirname "$NODE"):/usr/local/bin:/usr/bin:/bin" "$NODE" --input-type=module -e "$TESTER_QUERY" "$COPY/packages/cli/src/config.mjs" "$COPY/packages/webui/src/cli.mjs")" || refuse "tester config query failed"
+QUERY="$(tester_capture 5 7 4096 "$S_USER" "$S_HOME" "$(dirname "$NODE"):/usr/local/bin:/usr/bin:/bin" "$NODE" --input-type=module -e "$TESTER_QUERY" "$COPY/packages/cli/src/config.mjs" "$COPY/packages/webui/src/cli.mjs")" || refuse "tester config query $(tester_capture_reason "$?")"
+@@ -536 +663 @@
+-        peer="$(tester_capture 3 128 sudo -u "$S_USER" -H env -i "HOME=$S_HOME" "PATH=$(dirname "$NODE"):/usr/local/bin:/usr/bin:/bin" "$python" -I -S -c "$TESTER_PEER" "$TESTER_PATH")" || why=probe
+        peer="$(tester_capture 2 4 128 "$S_USER" "$S_HOME" "$(dirname "$NODE"):/usr/local/bin:/usr/bin:/bin" "$python" -I -S -c "$TESTER_PEER" "$TESTER_PATH")" || why="probe-$(tester_capture_reason "$?")"
+@@ -540 +667 @@
+-        else why=probe; fi
+        else [ -n "$why" ] || why=probe; fi
+--- a/packages/cli/tests/case-sudo-fixture.mjs
+++ b/packages/cli/tests/case-sudo-fixture.mjs
+@@ -3,0 +4,3 @@
+import { spawn } from 'node:child_process';
+import { readFileSync, readdirSync } from 'node:fs';
+
+@@ -4,0 +8,13 @@
+case_sudo_entry() {
+    local record="$1" here sid; shift
+    here="$BASHPID"
+    read -r sid < <(/bin/ps -o sid= -p "$here")
+    printf "%s %s\n" "$here" "$sid" >> "$record/session-pids"
+    if { [ -f "$record/stall-config" ] && [[ "$*" == *MOSAIC_TESTER_SOCKET_V1* ]]; } ||
+       { [ -f "$record/stall-probe" ] && [[ "$*" == *SO_PEERCRED* ]]; }; then
+        trap '' TERM HUP
+        [ ! -f "$record/stall-output" ] || /bin/cat "$record/stall-output"
+        exec /bin/sleep 60
+    fi
+    exec "$@"
+}
+@@ -6,2 +22,3 @@
+-    local record="$1" child="" rc=0; shift
+-    if [ "$(cat "$record/session-mode" 2>/dev/null)" != hop ]; then exec "$@"; fi
+    local record="$1" child="" rc=0 mode=exec; shift
+    [ ! -f "$record/session-mode" ] || mode="$(<"$record/session-mode")"
+    if [ "$mode" != hop ]; then case_sudo_entry "$record" "$@"; return "$?"; fi
+@@ -13,7 +30,2 @@
+-    /usr/bin/setsid /bin/bash -c '
+-        record="$1"; shift
+-        here="$BASHPID"
+-        read -r pid sid < <(/bin/ps -o pid=,sid= -p "$here")
+-        printf "%s %s\n" "$pid" "$sid" >> "$record/session-pids"
+-        exec "$@"
+-    ' -- "$record" "$@" &
+    export -f case_sudo_entry
+    /usr/bin/setsid /bin/bash -c 'case_sudo_entry "$@"' -- "$record" "$@" &
+@@ -31 +43,3 @@
+-  const sessions = new Set(readFile(recordFile).trim().split('\n').filter(Boolean).map(line=>Number(line.trim().split(/\s+/)[1])));
+  // Exec fake entries share the test runner's session. Only self-led sessions
+  // are isolated and safe to scan here; exec coverage also checks exact PIDs.
+  const sessions = new Set(readFile(recordFile).trim().split('\n').filter(Boolean).map(line=>line.trim().split(/\s+/).map(Number)).filter(([pid,sid])=>pid===sid).map(([,sid])=>sid));
+@@ -41,0 +56,87 @@
+
+export function recordedPids(file) {
+  try{return readFileSync(file,'utf8').trim().split('\n').filter(Boolean).map(line=>line.trim().split(/\s+/).map(Number));}
+  catch(error){if(error.code==='ENOENT')return [];throw error;}
+}
+
+export function recordedLivePids(file) {
+  return sessionPairs(recordedPids(file)).filter(([pid,sid])=>{
+    try{
+      const raw=readFileSync(`/proc/${pid}/stat`,'utf8'),fields=raw.slice(raw.lastIndexOf(') ')+2).split(' ');
+      return Number(fields[3])===sid && fields[0]!=='Z' && fields[0]!=='X';
+    }catch(error){if(error.code==='ENOENT'||error.code==='ESRCH')return false;throw error;}
+  }).map(([pid])=>pid);
+}
+
+export function killRecordedPids(file) {
+  killPairs(recordedPids(file));
+}
+
+function killPairs(pairs) {
+  for(const [pid,sid] of sessionPairs(pairs)){
+    try{
+      const raw=readFileSync(`/proc/${pid}/stat`,'utf8'),fields=raw.slice(raw.lastIndexOf(') ')+2).split(' ');
+      if(Number(fields[3])===sid && fields[0]!=='Z' && fields[0]!=='X')process.kill(pid,'SIGKILL');
+    }catch(error){if(error.code!=='ENOENT'&&error.code!=='ESRCH')throw error;}
+  }
+}
+
+function sessionPairs(pairs) {
+  // Only self-led records authorize a session scan. Exec-mode records belong
+  // to the runner's session and authorize checking their exact PIDs only.
+  const sessions=new Set(pairs.filter(([pid,sid])=>pid===sid).map(([,sid])=>sid));
+  const found=new Map(pairs.map(pair=>[pair[0],pair]));
+  if(sessions.size)for(const entry of readdirSync('/proc')){
+    if(!/^\d+$/.test(entry))continue;
+    try{
+      const raw=readFileSync(`/proc/${entry}/stat`,'utf8'),fields=raw.slice(raw.lastIndexOf(') ')+2).split(' '),sid=Number(fields[3]);
+      if(sessions.has(sid))found.set(Number(entry),[Number(entry),sid]);
+    }catch(error){if(error.code!=='ENOENT'&&error.code!=='ESRCH')throw error;}
+  }
+  return [...found.values()];
+}
+
+// Safety net for a removed-outer-bound change. It is fixture cleanup, never
+// product supervision. The guard reads only fixture records and checks sid
+// immediately before every kill. Normal outer-bound cases return before it.
+export function fixtureGuard(t,files,milliseconds=9500) {
+  const program=`const fs=require('node:fs');setTimeout(()=>{for(const file of JSON.parse(process.argv[1])){let rows=[];try{rows=fs.readFileSync(file,'utf8').trim().split(String.fromCharCode(10))}catch{}for(const row of rows){const [pid,sid]=row.trim().split(' ').map(Number);if(!(pid>0&&sid>0))continue;try{const raw=fs.readFileSync('/proc/'+pid+'/stat','utf8'),f=raw.slice(raw.lastIndexOf(') ')+2).split(' ');if(Number(f[3])===sid&&f[0]!=='Z')process.kill(pid,'SIGKILL')}catch{}}}},Number(process.argv[2]));`;
+  const child=spawn(process.execPath,['-e',program,JSON.stringify(files),String(milliseconds)],{stdio:'ignore'});
+  const stop=async()=>{
+    if(child.exitCode!==null||child.signalCode!==null)return;
+    const exited=new Promise(resolve=>child.once('exit',resolve));
+    child.kill('SIGKILL');await exited;
+  };
+  t.after(stop);return stop;
+}
+
+export function cleanupFixture(t,files) {
+  let captured=[];
+  const capture=()=>{captured=files.flatMap(recordedPids);};
+  // tmp(t)'s directory-removal hook may run first. Retain PID/SID pairs in
+  // memory before assertions, then verify the kernel sid again before killing.
+  t.after(()=>killPairs([...captured,...files.flatMap(recordedPids)]));
+  return capture;
+}
+
+export async function pollFixtureGone(files) {
+  for(let n=0;n<50;n++){
+    if(files.every(file=>recordedLivePids(file).length===0))return [];
+    await new Promise(resolve=>setTimeout(resolve,10));
+  }
+  return files.flatMap(recordedLivePids);
+}
+
+export function blockingQuerySource(records,kind='signals',member,proof) {
+  const py=`import os,sys\nos.setpgid(0,0)\nwith open(sys.argv[2],"a") as f:f.write(str(os.getpid())+" "+str(os.getsid(0))+chr(10))\nos.execv(sys.argv[1],[sys.argv[1],"60"])`;
+  return `import fs from 'node:fs';import {spawn} from 'node:child_process';
+const records=${JSON.stringify(records)};
+function record(pid){const s=fs.readFileSync('/proc/'+pid+'/stat','utf8');const sid=Number(s.slice(s.lastIndexOf(') ')+2).split(' ')[3]);fs.appendFileSync(records,pid+' '+sid+String.fromCharCode(10));}
+record(process.pid);
+export function loadSystem(){
+${kind==='sleep'?`const c=spawn('/usr/bin/sleep',['60'],{stdio:'inherit'});record(c.pid);`:''}
+${kind==='signals'?`process.on('SIGTERM',()=>{});process.on('SIGHUP',()=>{});`:''}
+${kind==='member'?`const c=spawn('/usr/bin/python3',['-I','-S','-c',${JSON.stringify(py)},${JSON.stringify(member)},records],{stdio:'inherit'});for(let n=0;n<200;n++){try{const s=fs.readFileSync('/proc/'+c.pid+'/stat','utf8');if(s.includes('('+${JSON.stringify(member?.split('/').at(-1))}+') ')){fs.writeFileSync(${JSON.stringify(proof)},s);break;}}catch{}Atomics.wait(new Int32Array(new SharedArrayBuffer(4)),0,0,5);}`:''}
+Atomics.wait(new Int32Array(new SharedArrayBuffer(4)),0,0);
+}`;
+}
+--- a/packages/cli/tests/case2-unit.test.mjs
+++ b/packages/cli/tests/case2-unit.test.mjs
+@@ -16 +16 @@
+-import { CASE_SUDO_SESSION, liveRecordedSessions } from "./case-sudo-fixture.mjs";
+import { CASE_SUDO_SESSION, recordedLivePids, killRecordedPids, fixtureGuard, cleanupFixture, pollFixtureGone, blockingQuerySource } from "./case-sudo-fixture.mjs";
+@@ -96 +96 @@
+- (trap '' TERM; exec sleep 60) </dev/null >/dev/null 2>&1 &
+ (trap '' TERM; here="$BASHPID"; read -r sid < <(/bin/ps -o sid= -p "$here"); printf '%s %s\\n' "$here" "$sid" >'${root}/query-owned'; exec sleep 60) </dev/null >/dev/null 2>&1 &
+@@ -189,2 +189,4 @@
+-// Draft counterexample for DESIGN-C4. Written after sage-2307, not run.
+-test('row253 C4 query cleanup handles both exec and sudo session-hop fakes', async t=>{
+// C4 cases run through both sudo process models. Exec shares the runner's
+// session, so its session-wide check would be vacuous; exact recorded PIDs
+// are checked in both modes. Hop additionally isolates the fake session.
+for(const kind of ['sleep','signals','member']) test(`row253 C4 ${kind} query has exact inner reason and cleans all members`,async t=>{
+@@ -192 +194 @@
+-  const h=hub(t),pids=join(h.root,'session-pids'),queryPids=join(h.root,'query-pids'),copy=join(copyDir(h),'packages/cli/src/config.mjs');
+  const h=hub(t),sessions=join(h.root,'session-pids'),queries=join(h.root,'query-pids'),files=[sessions,queries];
+@@ -194,21 +196,10 @@
+-  writeFileSync(pids,'');
+-  writeFileSync(copy,`import fs from 'node:fs';process.on('SIGTERM',()=>{});process.on('SIGHUP',()=>{});fs.appendFileSync(${JSON.stringify(queryPids)},process.pid+'\\n');const s=fs.readFileSync('/proc/self/stat','utf8');const sid=Number(s.slice(s.lastIndexOf(') ')+2).split(' ')[3]);if(sid===process.pid)fs.appendFileSync(${JSON.stringify(pids)},process.pid+' '+sid+'\\n');export function loadSystem(){Atomics.wait(new Int32Array(new SharedArrayBuffer(4)),0,0);}`);
+-  t.after(()=>{
+-   if(!existsSync(pids))return;
+-   // Explicit fixture cleanup is safe only for these recorded fixture PIDs.
+-   for(const line of [read(pids),existsSync(queryPids)?read(queryPids):''].join('\n').trim().split('\n')){
+-    const pid=Number(line.trim().split(/\s+/)[0]);
+-    if(pid>0)try{process.kill(pid,'SIGKILL');}catch{}
+-   }
+-  });
+-  const r=unit(h,{profile:'factory'});refuses(r,/query/);
+-  for(let n=0;n<50;n++){
+-   if(!liveRecordedSessions(pids,read,()=>readdirSync('/proc')).length)break;
+-   await new Promise(resolve=>setTimeout(resolve,10));
+-  }
+-  assert.deepEqual(liveRecordedSessions(pids,read,()=>readdirSync('/proc')),[],mode);
+-  for(const pid of read(queryPids).trim().split('\n')){
+-   let state='gone';try{state=read(`/proc/${pid}/stat`).split(') ')[1].split(' ')[0];}catch{}
+-   assert.ok(state==='gone'||state==='Z',`${mode}: query ${pid} still ${state}`);
+-  }
+-  assert.equal(existsSync(h.log),false,mode);
+  const member=join(h.root,'q ) '+String.fromCharCode(10)+'mem'),proof=join(h.root,'comm-proof');
+  if(kind==='member')symlinkSync('/usr/bin/sleep',member);
+  writeFileSync(join(copyDir(h),'packages/cli/src/config.mjs'),blockingQuerySource(queries,kind,member,proof));
+  const capture=cleanupFixture(t,files);const stopGuard=fixtureGuard(t,files);
+  const start=performance.now(),r=unit(h,{profile:'factory'}),seconds=(performance.now()-start)/1000;capture();
+  refuses(r,/^case2-unit: tester config query inner-timeout\n$/);
+  assert.ok(seconds<7,`${kind}/${mode}: ${seconds}s exceeds outer bound`);
+  assert.deepEqual(await pollFixtureGone(files),[],mode);
+  if(kind==='member')assert.ok(read(proof).includes('('+member.split('/').at(-1)+') '),'member comm with newline and closing parenthesis was observed');
+  assert.equal(existsSync(h.log),false,mode);await stopGuard();
+@@ -215,0 +207,30 @@
+});
+
+test('row253 C4 overflow is output-limit in both sudo modes',async t=>{
+ for(const mode of ['exec','hop']){
+  const h=hub(t),files=[join(h.root,'session-pids')];writeFileSync(join(h.root,'session-mode'),mode);const capture=cleanupFixture(t,files);
+  writeFileSync(join(copyDir(h),'packages/cli/src/config.mjs'),`process.stdout.write('X'.repeat(8192));export const loadSystem=()=>({dataRoot:${JSON.stringify(h.dataRoot)}});`);
+  const r=unit(h,{profile:'factory'});capture();refuses(r,/^case2-unit: tester config query output-limit\n$/);
+  assert.equal(r.out,'');assert.equal(existsSync(busFile(h)),false);assert.equal(existsSync(h.log),false);
+  assert.deepEqual(await pollFixtureGone(files),[]);
+ }
+});
+
+test('row253 C4 stalled supervisor uses the outer reason and explicit residual cleanup',async t=>{
+ for(const mode of ['exec','hop']){
+  const h=hub(t),file=join(h.root,'session-pids'),files=[file];writeFileSync(join(h.root,'session-mode'),mode);
+  writeFileSync(join(h.root,'stall-config'),'');writeFileSync(join(h.root,'stall-output'),JSON.stringify({dataRoot:h.dataRoot,socket:true}));
+  const capture=cleanupFixture(t,files);const stopGuard=fixtureGuard(t,files);
+  const start=performance.now(),r=unit(h,{profile:'factory'}),seconds=(performance.now()-start)/1000;capture();
+  refuses(r,/^case2-unit: tester config query outer-timeout\n$/);
+  assert.ok(seconds>=7&&seconds<9,`${mode}: ${seconds}s; 2s slack includes root preflight`);
+  assert.equal(r.out,'');assert.equal(existsSync(busFile(h)),false);assert.equal(existsSync(h.log),false);
+  if(mode==='hop')assert.ok(recordedLivePids(file).length>0,'R3 residual exists before fixture cleanup');
+  killRecordedPids(file);assert.deepEqual(await pollFixtureGone(files),[], 'explicit fixture cleanup of R3 residual');await stopGuard();
+ }
+});
+
+test('row253 C4 inline supervisor is byte-identical in both host scripts',()=>{
+ const extract=s=>s.split('# row253-supervisor-begin\n')[1]?.split('# row253-supervisor-end')[0];
+ const a=extract(read(UNIT)),b=extract(read(join(REPO,'scripts/case1-accept.sh')));
+ assert.ok(a?.length>100);assert.equal(a,b);
+@@ -222,2 +243,2 @@
+- t.after(()=>{if(pid)try{process.kill(pid,'SIGKILL');}catch{}});
+- const r=unit(h,{profile:'factory'});
+ const capture=cleanupFixture(t,[join(h.root,'query-owned')]);
+ const r=unit(h,{profile:'factory'});capture();
+@@ -235,2 +256,2 @@
+-test('row253 config parser is strict and output capture is bounded',()=>{
+- const source=read(UNIT), body=source.slice(source.indexOf('tester_capture() ('),source.indexOf('tester_location() {'));
+test('row253 config parser is strict',()=>{
+ const source=read(UNIT), body=source.slice(source.indexOf('tester_facts() {'),source.indexOf('tester_location() {'));
+@@ -244,2 +264,0 @@
+- const r=spawnSync('/bin/bash',['-c',body+'\ntester_capture 1 32 /usr/bin/head -c 100 /dev/zero']);
+- assert.notEqual(r.status,0);assert.equal(r.stdout.length,0);
+--- a/packages/cli/tests/case1-accept.test.mjs
+++ b/packages/cli/tests/case1-accept.test.mjs
+@@ -14 +14 @@
+-import { CASE_SUDO_SESSION } from "./case-sudo-fixture.mjs";
+import { CASE_SUDO_SESSION, recordedLivePids, killRecordedPids, fixtureGuard, cleanupFixture, pollFixtureGone, blockingQuerySource } from "./case-sudo-fixture.mjs";
+@@ -90 +90,2 @@
+-case_sudo_run "$HC" "$ROOT_DIR$cmd" "\${args[@]}"`,
+[ ! -e "$ROOT_DIR$cmd" ] || cmd="$ROOT_DIR$cmd"
+case_sudo_run "$HC" "$cmd" "\${args[@]}"`,
+@@ -100 +101,5 @@
+-[ -f "$HC/peer-hang" ] && { echo "$BASHPID" > "$HC/peer-pid"; exec sleep 60; }
+[ -f "$HC/peer-hang" ] && {
+ here="$BASHPID"; read -r sid < <(/bin/ps -o sid= -p "$here")
+ echo "$here" > "$HC/peer-pid"; printf '%s %s\\n' "$here" "$sid" >> "$HC/query-pids"
+ trap '' TERM HUP; exec sleep 60
+}
+@@ -303,0 +309,58 @@
+test('row253 C4 acceptance query inner reason holds under both sudo models',async t=>{
+ for(const mode of ['exec','hop']){
+  const h=host(t),files=[join(h.hc,'session-pids'),join(h.hc,'query-pids')];
+  put(join(h.hc,'session-mode'),mode);
+  put(join(h.root,HOME,'.local/share/mosaic-stack/copies',COPY,'packages/cli/src/config.mjs'),blockingQuerySource(files[1]));
+  const capture=cleanupFixture(t,files);const stop=fixtureGuard(t,files);
+  const start=performance.now(),r=run(h),seconds=(performance.now()-start)/1000;capture();
+  assert.equal(r.status,2,r.out+r.err);assert.equal(r.err,'case1-accept: refusing: tester config query inner-timeout\n');
+  assert.ok(seconds<7,`${mode}: ${seconds}s`);assert.equal(r.out,'');assert.deepEqual(calls(h,'mosaic'),[]);
+  assert.deepEqual(await pollFixtureGone(files),[]);await stop();
+ }
+});
+
+test('row253 C4 acceptance query outer reason discards stdout and names residual cleanup',async t=>{
+ for(const mode of ['exec','hop']){
+  const h=host(t),files=[join(h.hc,'session-pids')];put(join(h.hc,'session-mode'),mode);put(join(h.hc,'stall-config'),'');
+  put(join(h.hc,'stall-output'),JSON.stringify({dataRoot:HOME+'/.mosaic-dev',socket:true}));
+  const capture=cleanupFixture(t,files);const stop=fixtureGuard(t,files);
+  const start=performance.now(),r=run(h),seconds=(performance.now()-start)/1000;capture();
+  assert.equal(r.status,2,r.out+r.err);assert.equal(r.err,'case1-accept: refusing: tester config query outer-timeout\n');
+  assert.ok(seconds>=7&&seconds<9,`${mode}: ${seconds}s; 2s preflight slack`);
+  assert.equal(r.out,'');assert.deepEqual(calls(h,'mosaic'),[]);
+  if(mode==='hop')assert.ok(recordedLivePids(files[0]).length>0,'R3 session remains before fixture cleanup');
+  killRecordedPids(files[0]);assert.deepEqual(await pollFixtureGone(files),[],'explicit R3 fixture cleanup');await stop();
+ }
+});
+
+test('row253 C4 acceptance query overflow is output-limit in both models',async t=>{
+ for(const mode of ['exec','hop']){
+  const h=host(t),files=[join(h.hc,'session-pids')];put(join(h.hc,'session-mode'),mode);const capture=cleanupFixture(t,files);
+  put(join(h.root,HOME,'.local/share/mosaic-stack/copies',COPY,'packages/cli/src/config.mjs'),`process.stdout.write('X'.repeat(8192));export const loadSystem=()=>({dataRoot:'${HOME}/.mosaic-dev'});`);
+  const r=run(h);capture();assert.equal(r.status,2,r.out+r.err);assert.equal(r.err,'case1-accept: refusing: tester config query output-limit\n');
+  assert.equal(r.out,'');assert.deepEqual(calls(h,'mosaic'),[]);assert.deepEqual(await pollFixtureGone(files),[]);
+ }
+});
+
+for(const fault of ['inner','outer','overflow'])test(`row253 C4 P10 ${fault} reason holds under both sudo models`,async t=>{
+ for(const mode of ['exec','hop']){
+  const h=host(t),files=[join(h.hc,'session-pids'),join(h.hc,'query-pids')];put(join(h.hc,'session-mode'),mode);
+  const capture=cleanupFixture(t,files);const stop=fixtureGuard(t,files,7000);
+  if(fault==='inner')put(join(h.hc,'peer-hang'),'');
+  if(fault==='outer'){put(join(h.hc,'stall-probe'),'');put(join(h.hc,'stall-output'),'200 997 997\n');}
+  if(fault==='overflow'){put(join(h.hc,'peer-output'),'200 997 997\n'+'X'.repeat(256));put(join(h.hc,'peer-status'),'0');}
+  const start=performance.now(),r=run(h),seconds=(performance.now()-start)/1000;capture();
+  assert.equal(r.status,0,r.out+r.err);
+  const reason=fault==='inner'?'inner-timeout':fault==='outer'?'outer-timeout':'output-limit';
+  assert.match(r.out,new RegExp('P10 tester-socket-squat unnamed boundary=failed reason=probe-'+reason+' '));
+  assert.doesNotMatch(r.out,/boundary=observed/);
+  if(fault==='inner')assert.ok(seconds<4,`${mode}: ${seconds}s includes functional checks`);
+  if(fault==='outer'){
+   assert.ok(seconds>=4&&seconds<6,`${mode}: ${seconds}s; 2s functional-check slack`);
+   if(mode==='hop')assert.ok(recordedLivePids(files[0]).length>0,'stalled supervisor is R3 residual');
+   for(const file of files)killRecordedPids(file);
+  }
+  assert.deepEqual(await pollFixtureGone(files),[],fault==='outer'?'explicit R3 cleanup':mode);await stop();
+ }
+});
+
+--- a/packages/webui/README.md
+++ b/packages/webui/README.md
+@@ -128 +128 @@
+-need `--port`, and 7330, 7332 or 7333 as `--port` or `--tester-port` exits 4
+need `--port`, and 7330, 7332 or 7333 as the main or legacy tester port exits 4
+@@ -130 +130 @@
+-`--tester-port` that another installed Console unit in the unit directory
+legacy tester port that another installed Console unit in the unit directory
+@@ -144 +144 @@
+-`serve --sso [--send] [--tester-port N]` makes the Console an OpenID Connect
+`serve --sso [--send] [--tester-socket]` makes the Console an OpenID Connect
+@@ -176 +176 @@
+-- With `--tester-port`, the tester listener refuses any request carrying an
+- With `--tester-socket`, the tester listener refuses any request carrying an
+--- a/docs/plans/DEFERRED.md
+++ b/docs/plans/DEFERRED.md
+@@ -273,14 +272,0 @@
+-- **Gate runs mount the host's pi auth file.** `compose.yaml:43` mounts
+-  `${PI_AUTH_FILE:-/home/jwoltje/.pi/agent/auth.json}` read-only into
+-  the agent container. No suite sets `PI_AUTH_FILE`, so the
+-  `test-task.sh` cases that call `scripts/run-task.sh`, and
+-  `test-release.sh` through `release.sh` `health_check` (`:41-54`), run
+-  Compose with the host file. Row 197's lane `cleanEnv`
+-  (`scripts/testing/gate-lane.mjs:109`) keeps the default too: it neither
+-  sets nor passes `PI_AUTH_FILE`. The mount is read-only, and the legacy
+-  gate already worked this way before row 197. `test-auth.sh` uses its
+-  own fixtures but calls `auth.sh`, not Compose. The fix: a fixture
+-  `PI_AUTH_FILE` for the Compose-reaching cases, set by the suites or by
+-  the lane's `cleanEnv`, and a test that no gate step mounts the host
+-  default. It needs its own row. Webby N4 on the row 197 proof driver
+-  (bba870ee9), traced by Herb (herb-0051). (2026-10-21)
+@@ -362,0 +349,34 @@
+- **Console library routes: four library codes still map to 502.**
+  (Dewey N2 on the row 254 manifest, #1759 comment 30173.) Row 254
+  gave six library codes a STATUS entry in `packages/webui/src/bus.mjs`.
+  `library-mapping-invalid`, `library-remote-invalid`,
+  `library-state-invalid` and `library-git` still fall through
+  `busStatus` to 502. The row that adds the Console library routes
+  decides their statuses and gives its `humanCall` for `library.sync`
+  a timeout over 130 seconds. (2026-10-21)
+- **T27 sweep test leaves two `sleep 60` children running.**
+  (Darkwing row 251 slot, darkwing-0113 and darkwing-0117; Dewey on
+  r2, comment 30168.) The sweep test spawns two detached shells,
+  `planted` at `host-run.test.mjs:528` and `decoy` at `:536`, each
+  running `sleep 60; :` with the run dir as `$0`. `sweepRunDir` kills
+  the planted shell by pid (`host-run.mjs:238`), and `t.after` kills
+  only the decoy shell. Neither kill reaches the `sleep` child, so each
+  one lives for up to 60 s after the test and trips any busy check that
+  follows. The fix is to kill the process group in both `t.after`
+  hooks: `process.kill(-pid, 'SIGKILL')`. Each shell is spawned
+  detached, so it leads its own group. `exec sleep 60` doesn't work.
+  The sweep matches the run dir in `/proc/<pid>/cmdline`
+  (`host-run.mjs:236`), and exec drops the `$0` that carries it, so the
+  planted process would survive and the "planted process killed" assert
+  would fail. This binds the next row that touches
+  `packages/bus/tests/host-run.test.mjs`. (2026-10-21)
+- **Real-model suite cases run outside the gate.** Row 244 moved
+  `test-task.sh` fork recall (M11) and user recall (M16) behind
+  `MOSAIC_LIVE_PROVIDER=1`, and `test-release.sh` activations to the mock
+  adapter. Before any re-pin whose tree changes `packages/harness` or the
+  session fork code (`scripts/mosaic-task.mjs` session and
+  `sessionForkFrom` handling, the pi adapter), an operator runs
+  `MOSAIC_LIVE_PROVIDER=1 bash scripts/test-task.sh` with the real pi
+  credential and a real `release.sh activate`, and records both results on
+  the re-pin row. Morgana's wording (row 244 BUILD.md), Webby N2 on row 244
+  r1 (#1757). (2026-10-21)
+@@ -427,0 +448,14 @@
+- Gate runs mount the host's pi auth file (Webby N4 on the row 197 proof
+  driver, 059577886): closed by row 244 (#1757), landing e69260a3c. The
+  suites and the lane's `cleanEnv` export a 0600 fixture `PI_AUTH_FILE`,
+  `guardDocker` refuses a Compose run without one, and
+  `packages/cli/tests/gate-lane-auth.test.mjs` proves no gate step mounts
+  the host default. The real-model cases this moved off the gate are open
+  above.
+
+## Row253 F5: legacy Case AS_USER supervision
+
+Tracked as row 276, Gitea #1781 (sage-2331), owner Gander, reviewer Duckworth, after row253.
+Brief: docs/plans/2026-10-22_case-sudo-legacy-followup.md, “Brief: supervised legacy AS_USER calls”.
+
+case1-accept.sh's legacy timeout330 around AS_USER talk and its AS_USER precheck, Claude version, PM launches and Node version diagnostics predate the new socket metadata/probe helpers. sudo's pty monitor can move them to a separate session; the old outer timeout does not prove their descendants are killed. The C4 repair in row253 covers only its new config query and peer probe. These legacy paths need the reviewed supervisor or a header explicitly explaining why each remains unsupervised. The follow-up must preserve the 300-second talk/reply contract, concurrent F5 scan, diagnostics and secret-output refusals, with fake-only session-hop tests and Sage's slot. No host or live unit change is authorized.
@@ -0,0 +1,275 @@
+[
+  {
+    "id": "M1",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "3ec41265b47770f70d60640a786b4f547ffb0157512fd8477ea7712e91a724fe",
+    "after": "ec09134dd5e735d5e2d3c9a92162a6d0dd9cc2e1718cf2e2efd3d508a7db3d13"
+  },
+  {
+    "id": "M2",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "3ec41265b47770f70d60640a786b4f547ffb0157512fd8477ea7712e91a724fe",
+    "after": "5757898fb9003312b67c98037a524dcf06a8dc43e07572a21aae1afb0067e0ff"
+  },
+  {
+    "id": "M3",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "3ec41265b47770f70d60640a786b4f547ffb0157512fd8477ea7712e91a724fe",
+    "after": "e9df1616060cb45e228e8c3a633299cbd2cc8e8d913544678eab3299bb3a8548"
+  },
+  {
+    "id": "M4",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "3ec41265b47770f70d60640a786b4f547ffb0157512fd8477ea7712e91a724fe",
+    "after": "3cfe29b917726d13819fabc390845df1367423bb251d3cce2cd270164fe143d0"
+  },
+  {
+    "id": "M5",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "3ec41265b47770f70d60640a786b4f547ffb0157512fd8477ea7712e91a724fe",
+    "after": "41f91ef6413543602ef46f412e8e289a6dd5ce24bd271cebba05c819242ebe56"
+  },
+  {
+    "id": "M6",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "3ec41265b47770f70d60640a786b4f547ffb0157512fd8477ea7712e91a724fe",
+    "after": "19d71aed6a102e519f97151ca83d01dc9534b7c4722b1365b0fc365daac4bba9"
+  },
+  {
+    "id": "M7",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "3ec41265b47770f70d60640a786b4f547ffb0157512fd8477ea7712e91a724fe",
+    "after": "7c629e0da6101109cd9ae7f8028fd68bb16a43e2b799ee0c8de87f13e1055652"
+  },
+  {
+    "id": "M8",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "3ec41265b47770f70d60640a786b4f547ffb0157512fd8477ea7712e91a724fe",
+    "after": "dcc4a888a21c8a6cbfbfbe48df892c81b8fd038868e0dcd9b1acabf2dceb5313"
+  },
+  {
+    "id": "M9",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "3ec41265b47770f70d60640a786b4f547ffb0157512fd8477ea7712e91a724fe",
+    "after": "2dccf96df3518c4e604e36245e62a2d446719e1ae1bd5bd47890fc692acad43c"
+  },
+  {
+    "id": "M10",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "3ec41265b47770f70d60640a786b4f547ffb0157512fd8477ea7712e91a724fe",
+    "after": "ba59a37dac46254f148a0f40367186172ca9e8bbb98020a0c97d7d325c5e86e0"
+  },
+  {
+    "id": "M11",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "3ec41265b47770f70d60640a786b4f547ffb0157512fd8477ea7712e91a724fe",
+    "after": "58f9e51f48d41c0887894f34e278937911c380d18a63770342a8e1afd1f5dc59"
+  },
+  {
+    "id": "M12",
+    "file": "scripts/case1-accept.sh",
+    "occurrences": 1,
+    "before": "f93eac4cc9dd9fc95a67be19d9fa7c7f6e7d7bfc84e662360b4aed05763850c7",
+    "after": "3a755dd95af1d11f0cc0bf1ae59a676b62ee7d7b72174ebb88388c6d48fa41ff"
+  },
+  {
+    "id": "M13",
+    "file": "scripts/case1-accept.sh",
+    "occurrences": 1,
+    "before": "f93eac4cc9dd9fc95a67be19d9fa7c7f6e7d7bfc84e662360b4aed05763850c7",
+    "after": "b230bc14a1197c9986ddb99689a0b0dc71453903f1a6a07328c9d10ceec6ff30"
+  },
+  {
+    "id": "M14",
+    "file": "scripts/case1-accept.sh",
+    "occurrences": 1,
+    "before": "f93eac4cc9dd9fc95a67be19d9fa7c7f6e7d7bfc84e662360b4aed05763850c7",
+    "after": "0179e9d29cc9461b665e807b00e683ce30f30e2903efc1f8ec4a1599876681f4"
+  },
+  {
+    "id": "M15",
+    "file": "scripts/case1-accept.sh",
+    "occurrences": 1,
+    "before": "f93eac4cc9dd9fc95a67be19d9fa7c7f6e7d7bfc84e662360b4aed05763850c7",
+    "after": "1d93cd35e92a079cbe31b71a69314fd98d1547e35d62c9a152a5fa4a67c873eb"
+  },
+  {
+    "id": "M16",
+    "file": "scripts/case1-accept.sh",
+    "occurrences": 1,
+    "before": "f93eac4cc9dd9fc95a67be19d9fa7c7f6e7d7bfc84e662360b4aed05763850c7",
+    "after": "5c60833fa9e7fa40bfdd10290cc3e91c7476b5b1f0975367760bbedddbf91c19"
+  },
+  {
+    "id": "M17",
+    "file": "scripts/case1-accept.sh",
+    "occurrences": 1,
+    "before": "f93eac4cc9dd9fc95a67be19d9fa7c7f6e7d7bfc84e662360b4aed05763850c7",
+    "after": "845c7ccf5c178fb783cbf8c88d329780a0f9e4c63a2c262b6473f0eebd0f0c5e"
+  },
+  {
+    "id": "M18",
+    "file": "scripts/case1-accept.sh",
+    "occurrences": 1,
+    "before": "f93eac4cc9dd9fc95a67be19d9fa7c7f6e7d7bfc84e662360b4aed05763850c7",
+    "after": "ab32a811142fd84de78fe93ac541b6ee823d7d9422f816e6bd15035149a32ac2"
+  },
+  {
+    "id": "M19",
+    "file": "scripts/case1-accept.sh",
+    "occurrences": 1,
+    "before": "f93eac4cc9dd9fc95a67be19d9fa7c7f6e7d7bfc84e662360b4aed05763850c7",
+    "after": "5ee29b36b15b45f031a6651e82898d6bb1a5ebeff4b47c98b5777f00ab535ed3"
+  },
+  {
+    "id": "M20",
+    "file": "scripts/case1-accept.sh",
+    "occurrences": 1,
+    "before": "f93eac4cc9dd9fc95a67be19d9fa7c7f6e7d7bfc84e662360b4aed05763850c7",
+    "after": "1c85dc5f63d4766226bb13b701b0358536e7a2a918b224841650acf244a0638a"
+  },
+  {
+    "id": "M21",
+    "file": "scripts/case1-accept.sh",
+    "occurrences": 1,
+    "before": "f93eac4cc9dd9fc95a67be19d9fa7c7f6e7d7bfc84e662360b4aed05763850c7",
+    "after": "b13942590fb6f518446302340c66465a16ba9ab9e4429f6fcc01714cbc53c63e"
+  },
+  {
+    "id": "M22",
+    "file": "scripts/case1-accept.sh",
+    "occurrences": 1,
+    "before": "f93eac4cc9dd9fc95a67be19d9fa7c7f6e7d7bfc84e662360b4aed05763850c7",
+    "after": "5a87dc77e3bba09ecb9f6b90c653cbfa38117c13674c770c0af0d941c2c63fe1"
+  },
+  {
+    "id": "M23",
+    "file": "scripts/case1-accept.sh",
+    "occurrences": 1,
+    "before": "f93eac4cc9dd9fc95a67be19d9fa7c7f6e7d7bfc84e662360b4aed05763850c7",
+    "after": "2b7d4d59bfe4ec8f2c9d7c5562be1c57a4ecc6e4d0b4960c1ae44958f2ad8dd9"
+  },
+  {
+    "id": "M24",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "3ec41265b47770f70d60640a786b4f547ffb0157512fd8477ea7712e91a724fe",
+    "after": "e0f388ef748d5e6a3df40ac486891c14d91fcafdb8ce03b36ef20f93aebbdfe2"
+  },
+  {
+    "id": "M25",
+    "file": "scripts/case1-accept.sh",
+    "occurrences": 1,
+    "before": "f93eac4cc9dd9fc95a67be19d9fa7c7f6e7d7bfc84e662360b4aed05763850c7",
+    "after": "5ba47cf8b8a045967887d108d71a7456cba89e73c096cbdfbf76e010b4d3c5f2"
+  },
+  {
+    "id": "M26",
+    "file": "scripts/case1-accept.sh",
+    "occurrences": 1,
+    "before": "f93eac4cc9dd9fc95a67be19d9fa7c7f6e7d7bfc84e662360b4aed05763850c7",
+    "after": "cca6f1d39fde22603cbd649d6712c0e05041bd1a86eb7cd9b1c410f58c734a09"
+  },
+  {
+    "id": "M27",
+    "file": "scripts/case1-accept.sh",
+    "occurrences": 1,
+    "before": "f93eac4cc9dd9fc95a67be19d9fa7c7f6e7d7bfc84e662360b4aed05763850c7",
+    "after": "8b6b71c84ca96f3caf6e832988573a608fccd3c74fa7798468565d0b8b202c5a"
+  },
+  {
+    "id": "M28",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "3ec41265b47770f70d60640a786b4f547ffb0157512fd8477ea7712e91a724fe",
+    "after": "25e1d996be7c62091b1a3a837fd8fe95871bc01f2a2d509eb1ae09785b51ea48"
+  },
+  {
+    "id": "M29",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "3ec41265b47770f70d60640a786b4f547ffb0157512fd8477ea7712e91a724fe",
+    "after": "eb5e9d9a069ce226ab70baef11dc7897ae4e3d44ac4807cbed838ba1ded47494"
+  },
+  {
+    "id": "M30",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "3ec41265b47770f70d60640a786b4f547ffb0157512fd8477ea7712e91a724fe",
+    "after": "280ba5c20d3b42423d681e69312731aa60b2396b1605e875a55d3e87d908eba1"
+  },
+  {
+    "id": "M31",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "3ec41265b47770f70d60640a786b4f547ffb0157512fd8477ea7712e91a724fe",
+    "after": "2884a7d730d0357e4545cfccd446cad1fb5a98f7f1d86698f778063b0025b451"
+  },
+  {
+    "id": "M32",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "3ec41265b47770f70d60640a786b4f547ffb0157512fd8477ea7712e91a724fe",
+    "after": "51b7bce4b8f88de20c68797afac71e4dd43d29119e68bcf65cb056f630a87011"
+  },
+  {
+    "id": "M33",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "3ec41265b47770f70d60640a786b4f547ffb0157512fd8477ea7712e91a724fe",
+    "after": "dc86d9be155f56667ddabf5183d757b55fa339ff86af40ce039f0d63e6e228a6"
+  },
+  {
+    "id": "M34",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "3ec41265b47770f70d60640a786b4f547ffb0157512fd8477ea7712e91a724fe",
+    "after": "3ef45b6044db0722ff25bd85260c818be9217cf43ea26be0e3f77872af0e70b1"
+  },
+  {
+    "id": "M35",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "3ec41265b47770f70d60640a786b4f547ffb0157512fd8477ea7712e91a724fe",
+    "after": "c3de12c5a897407a2e0443536bfe5c97d4cefb757f23a5ba301b9479400c09d5"
+  },
+  {
+    "id": "M36",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "3ec41265b47770f70d60640a786b4f547ffb0157512fd8477ea7712e91a724fe",
+    "after": "d5326f6da46ca4eae3b4043d2efa0a66d280627e4e652da5a62b860d6c6f2a72"
+  },
+  {
+    "id": "M37",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "3ec41265b47770f70d60640a786b4f547ffb0157512fd8477ea7712e91a724fe",
+    "after": "f7d758bcd9752e6d7e6580ac935982ec9e9ff68b212c0be3d584a9b9757b9d5f"
+  },
+  {
+    "id": "M38",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "3ec41265b47770f70d60640a786b4f547ffb0157512fd8477ea7712e91a724fe",
+    "after": "bf1796db389b3381dd5cec1fb9a64f493b1e36188462e531cad6fbba08775cd2"
+  },
+  {
+    "id": "M39",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "3ec41265b47770f70d60640a786b4f547ffb0157512fd8477ea7712e91a724fe",
+    "after": "dbff45cd7878b4feae890a5b5d8bfdf9d95e151a9583e0d11a6802a4a7c83a45"
+  }
+]
@@ -0,0 +1,12 @@
+{
+  "968db0bcd..ddfb29af7": [
+    "docs/plans/DEFERRED.md",
+    "packages/cli/tests/case-sudo-fixture.mjs",
+    "packages/cli/tests/case1-accept.test.mjs",
+    "packages/cli/tests/case2-unit.test.mjs"
+  ],
+  "c3d88840c..ddfb29af7": [
+    "docs/plans/DEFERRED.md"
+  ],
+  "interpretation": "The branch-to-refactor comparison includes our unlanded test additions. From the actual branch base, only DEFERRED.md overlaps. Preserved upstream DEFERRED.md and appended the row 276 / #1781 entry. No rebase performed."
+}
@@ -0,0 +1,142 @@
+// Shared fake process model for the two Case host-script tests. No real sudo.
+// Call case_sudo_run RECORD_DIR COMMAND... after the caller's argv checks.
+// Missing session-mode preserves the original exec-style fake.
+import { spawn } from 'node:child_process';
+import { readFileSync, readdirSync } from 'node:fs';
+
+export const CASE_SUDO_SESSION = String.raw`
+case_sudo_entry() {
+    local record="$1" here sid; shift
+    here="$BASHPID"
+    read -r sid < <(/bin/ps -o sid= -p "$here")
+    printf "%s %s\n" "$here" "$sid" >> "$record/session-pids"
+    if { [ -f "$record/stall-config" ] && [[ "$*" == *MOSAIC_TESTER_SOCKET_V1* ]]; } ||
+       { [ -f "$record/stall-probe" ] && [[ "$*" == *SO_PEERCRED* ]]; }; then
+        trap '' TERM HUP
+        [ ! -f "$record/stall-output" ] || /bin/cat "$record/stall-output"
+        exec /bin/sleep 60
+    fi
+    exec "$@"
+}
+case_sudo_run() {
+    local record="$1" child="" rc=0 mode=exec; shift
+    [ ! -f "$record/session-mode" ] || mode="$(<"$record/session-mode")"
+    if [ "$mode" != hop ]; then case_sudo_entry "$record" "$@"; return "$?"; fi
+    # The fake stays as parent, just as sudo does on its pty path. KILL cannot
+    # be caught or forwarded. The child creates the separate terminal session.
+    trap '[ -z "$child" ] || kill -TERM -- "-$child" 2>/dev/null || :' TERM
+    trap '[ -z "$child" ] || kill -HUP -- "-$child" 2>/dev/null || :' HUP
+    trap '[ -z "$child" ] || kill -INT -- "-$child" 2>/dev/null || :' INT
+    export -f case_sudo_entry
+    /usr/bin/setsid /bin/bash -c 'case_sudo_entry "$@"' -- "$record" "$@" &
+    child=$!
+    # An interrupted wait returns while the child still runs; keep waiting.
+    while :; do
+        wait "$child"; rc=$?
+        kill -0 "$child" 2>/dev/null || break
+    done
+    return "$rc"
+}
+`;
+
+export function liveRecordedSessions(recordFile, readFile, procDirs) {
+  // Exec fake entries share the test runner's session. Only self-led sessions
+  // are isolated and safe to scan here; exec coverage also checks exact PIDs.
+  const sessions = new Set(readFile(recordFile).trim().split('\n').filter(Boolean).map(line=>line.trim().split(/\s+/).map(Number)).filter(([pid,sid])=>pid===sid).map(([,sid])=>sid));
+  const live=[];
+  for(const entry of procDirs()){
+    if(!/^\d+$/.test(entry))continue;
+    try{
+      const stat=readFile(`/proc/${entry}/stat`), fields=stat.slice(stat.lastIndexOf(') ')+2).split(' ');
+      if(sessions.has(Number(fields[3])) && fields[0]!=='Z') live.push(Number(entry));
+    }catch{}
+  }
+  return live;
+}
+
+export function recordedPids(file) {
+  try{return readFileSync(file,'utf8').trim().split('\n').filter(Boolean).map(line=>line.trim().split(/\s+/).map(Number));}
+  catch(error){if(error.code==='ENOENT')return [];throw error;}
+}
+
+export function recordedLivePids(file) {
+  return sessionPairs(recordedPids(file)).filter(([pid,sid])=>{
+    try{
+      const raw=readFileSync(`/proc/${pid}/stat`,'utf8'),fields=raw.slice(raw.lastIndexOf(') ')+2).split(' ');
+      return Number(fields[3])===sid && fields[0]!=='Z' && fields[0]!=='X';
+    }catch(error){if(error.code==='ENOENT'||error.code==='ESRCH')return false;throw error;}
+  }).map(([pid])=>pid);
+}
+
+export function killRecordedPids(file) {
+  killPairs(recordedPids(file));
+}
+
+function killPairs(pairs) {
+  for(const [pid,sid] of sessionPairs(pairs)){
+    try{
+      const raw=readFileSync(`/proc/${pid}/stat`,'utf8'),fields=raw.slice(raw.lastIndexOf(') ')+2).split(' ');
+      if(Number(fields[3])===sid && fields[0]!=='Z' && fields[0]!=='X')process.kill(pid,'SIGKILL');
+    }catch(error){if(error.code!=='ENOENT'&&error.code!=='ESRCH')throw error;}
+  }
+}
+
+function sessionPairs(pairs) {
+  // Only self-led records authorize a session scan. Exec-mode records belong
+  // to the runner's session and authorize checking their exact PIDs only.
+  const sessions=new Set(pairs.filter(([pid,sid])=>pid===sid).map(([,sid])=>sid));
+  const found=new Map(pairs.map(pair=>[pair[0],pair]));
+  if(sessions.size)for(const entry of readdirSync('/proc')){
+    if(!/^\d+$/.test(entry))continue;
+    try{
+      const raw=readFileSync(`/proc/${entry}/stat`,'utf8'),fields=raw.slice(raw.lastIndexOf(') ')+2).split(' '),sid=Number(fields[3]);
+      if(sessions.has(sid))found.set(Number(entry),[Number(entry),sid]);
+    }catch(error){if(error.code!=='ENOENT'&&error.code!=='ESRCH')throw error;}
+  }
+  return [...found.values()];
+}
+
+// Safety net for a removed-outer-bound change. It is fixture cleanup, never
+// product supervision. The guard reads only fixture records and checks sid
+// immediately before every kill. Normal outer-bound cases return before it.
+export function fixtureGuard(t,files,milliseconds=9500) {
+  const program=`const fs=require('node:fs');setTimeout(()=>{for(const file of JSON.parse(process.argv[1])){let rows=[];try{rows=fs.readFileSync(file,'utf8').trim().split(String.fromCharCode(10))}catch{}for(const row of rows){const [pid,sid]=row.trim().split(' ').map(Number);if(!(pid>0&&sid>0))continue;try{const raw=fs.readFileSync('/proc/'+pid+'/stat','utf8'),f=raw.slice(raw.lastIndexOf(') ')+2).split(' ');if(Number(f[3])===sid&&f[0]!=='Z')process.kill(pid,'SIGKILL')}catch{}}}},Number(process.argv[2]));`;
+  const child=spawn(process.execPath,['-e',program,JSON.stringify(files),String(milliseconds)],{stdio:'ignore'});
+  const stop=async()=>{
+    if(child.exitCode!==null||child.signalCode!==null)return;
+    const exited=new Promise(resolve=>child.once('exit',resolve));
+    child.kill('SIGKILL');await exited;
+  };
+  t.after(stop);return stop;
+}
+
+export function cleanupFixture(t,files) {
+  let captured=[];
+  const capture=()=>{captured=files.flatMap(recordedPids);};
+  // tmp(t)'s directory-removal hook may run first. Retain PID/SID pairs in
+  // memory before assertions, then verify the kernel sid again before killing.
+  t.after(()=>killPairs([...captured,...files.flatMap(recordedPids)]));
+  return capture;
+}
+
+export async function pollFixtureGone(files) {
+  for(let n=0;n<50;n++){
+    if(files.every(file=>recordedLivePids(file).length===0))return [];
+    await new Promise(resolve=>setTimeout(resolve,10));
+  }
+  return files.flatMap(recordedLivePids);
+}
+
+export function blockingQuerySource(records,kind='signals',member,proof) {
+  const py=`import os,sys\nos.setpgid(0,0)\nwith open(sys.argv[2],"a") as f:f.write(str(os.getpid())+" "+str(os.getsid(0))+chr(10))\nos.execv(sys.argv[1],[sys.argv[1],"60"])`;
+  return `import fs from 'node:fs';import {spawn} from 'node:child_process';
+const records=${JSON.stringify(records)};
+function record(pid){const s=fs.readFileSync('/proc/'+pid+'/stat','utf8');const sid=Number(s.slice(s.lastIndexOf(') ')+2).split(' ')[3]);fs.appendFileSync(records,pid+' '+sid+String.fromCharCode(10));}
+record(process.pid);
+export function loadSystem(){
+${kind==='sleep'?`const c=spawn('/usr/bin/sleep',['60'],{stdio:'inherit'});record(c.pid);`:''}
+${kind==='signals'?`process.on('SIGTERM',()=>{});process.on('SIGHUP',()=>{});`:''}
+${kind==='member'?`const c=spawn('/usr/bin/python3',['-I','-S','-c',${JSON.stringify(py)},${JSON.stringify(member)},records],{stdio:'inherit'});for(let n=0;n<200;n++){try{const s=fs.readFileSync('/proc/'+c.pid+'/stat','utf8');if(s.includes('('+${JSON.stringify(member?.split('/').at(-1))}+') ')){fs.writeFileSync(${JSON.stringify(proof)},s);break;}}catch{}Atomics.wait(new Int32Array(new SharedArrayBuffer(4)),0,0,5);}`:''}
+Atomics.wait(new Int32Array(new SharedArrayBuffer(4)),0,0);
+}`;
+}
@@ -0,0 +1,707 @@
+#!/usr/bin/env bash
+# Row 195 (#1693): the Case 1 acceptance on 10.1.1.53, design r7 section 5
+# (agents/darkwing/work/queue-195/DESIGN.md). Deviations and decisions: agents/darkwing/work/queue-195/BUILD.md.
+#
+#   case1-accept.sh --business ID --args FILE --claude-pin PIN --node-pin vN.N.N
+#
+# Root runs it on the Case 1 host after the install window, from a root-owned checkout. It reads the
+# user, home, copy, node, claude, main port and tester socket marker from the args file, which must pass stack-upgrade.sh's
+# rules and be a factory file for --business. Every command that runs the stack's code runs as
+# `sudo -u USER -H env PATH=<node dir>:/usr/local/bin:/usr/bin:/bin` from /. Root itself reads ss,
+# /proc, the account database and file metadata, and runs these: systemctl show and is-enabled (F1,
+# P11), curl on the Console's loopback healthz (F2), sudo -l (P1, P3), sudo -u jarvis bwrap --version
+# and hostcheck.sh --check (P9), and node to parse managed-settings.json (F9). F9 runs node only when
+# --node is the pinned path and it and every directory above it are root's with no group or other
+# write. The script changes nothing on the host but the message F3 sends and its reply, and it never
+# opens claude-session.env. A bounded config/target query imports the copy only as the stack
+# user, with sudo and an empty environment. Root parses its two facts in bash. P10 uses the
+# fixed system Python, also as the stack user, for a read-only SO_PEERCRED observation.
+# The config/probe supervisor is fixed root-validated system Bash plus setsid
+# and sleep, after the uid drop: query inner/outer 5/7 s, probe 2/4 s. Root
+# independently bounds its sudo wait. Legacy AS_USER talk and diagnostics below
+# retain their old behavior and are NOT covered by this supervisor (F5 follow-up).
+#
+# One line per check, `<id> <path> <mark> <evidence>`, then `count <mark> N` for each mark and a
+# result line. F checks are `pass` or `FAIL`. P checks are `closed`, `accepted <ruling>` or
+# `unnamed`, which means no Q182, Q183 or Mos ruling names the path; each unnamed line goes to Mos.
+#
+# Exit 0 when every F check passes, 1 when one fails, 2 on usage or a refusal (a bad args file, or
+# --root misused). A P check never changes the exit.
+#
+# Test seam, for packages/cli/tests/case1-accept.test.mjs only. Root takes none:
+#   --root DIR   prefixes the args file, /etc, /proc, the stack's home, the host check and node, and
+#                reads the account database from DIR/etc/passwd and DIR/etc/group instead of getent
+set -uo pipefail
+
+usage() { echo "usage: case1-accept.sh --business ID --args FILE --claude-pin PIN --node-pin vN.N.N" >&2; exit 2; }
+refuse() { echo "case1-accept: refusing: $*" >&2; exit 2; }
+BUSINESS="" ARGS_FILE="" CLAUDE_PIN="" NODE_PIN="" ROOT=""
+while [ $# -gt 0 ]; do
+    case "$1" in
+        --business) [ $# -ge 2 ] && [[ "$2" =~ ^[a-z0-9][a-z0-9-]*$ ]] || usage; BUSINESS="$2"; shift 2 ;;
+        --args) [ $# -ge 2 ] && [[ "$2" =~ ^/[A-Za-z0-9/._+-]+$ ]] || usage; ARGS_FILE="$2"; shift 2 ;;
+        --claude-pin) [ $# -ge 2 ] && [[ "$2" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]] || usage; CLAUDE_PIN="$2"; shift 2 ;;
+        --node-pin) [ $# -ge 2 ] && [[ "$2" =~ ^v[0-9]+\.[0-9]+\.[0-9]+$ ]] || usage; NODE_PIN="$2"; shift 2 ;;
+        --root) [ $# -ge 2 ] && [[ "$2" =~ ^/[A-Za-z0-9/._+-]+$ ]] && [ -d "$2" ] || usage; ROOT="${2%/}"; shift 2 ;;
+        *) usage ;;
+    esac
+done
+[ -n "$BUSINESS" ] && [ -n "$ARGS_FILE" ] && [ -n "$CLAUDE_PIN" ] && [ -n "$NODE_PIN" ] || usage
+if [ "$(id -u)" = 0 ]; then
+    [ -z "$ROOT" ] || refuse "--root is a test seam, and root takes none"
+    PATH=/usr/sbin:/usr/bin:/sbin:/bin
+else
+    [ -n "$ROOT" ] || refuse "run it as root"
+fi
+cd / || refuse "cannot cd to /"
+
+# --- The args file, by stack-upgrade.sh's read_args rules, plus the serve ports ---
+
+f="$ROOT$ARGS_FILE"
+[ -f "$f" ] && [ ! -L "$f" ] || refuse "no regular file $ARGS_FILE"
+st="$(stat -c '%u %a' -- "$f")" || refuse "cannot stat $ARGS_FILE"
+[ "${st% *}" = "$(id -u)" ] && (( (8#${st#* } & 8#022) == 0 )) ||
+    refuse "$ARGS_FILE must be $(id -un)'s with no group or other write (it is uid ${st% *}, mode ${st#* })"
+mapfile -t ARGS < "$f" || refuse "cannot read $ARGS_FILE"
+S_USER="" S_HOME="" A_BUSINESS="" NODE="" COPY_ID="" CLAUDE="" PROFILE="" PORT="" TESTER_SOCKET=0
+copies=0 past=""
+for ((i = 0; i < ${#ARGS[@]}; i++)); do
+    a="${ARGS[i]}" v="${ARGS[i + 1]:-}"
+    if [ -n "$past" ]; then
+        case "$a" in
+            --port) PORT="$v"; i=$((i + 1)) ;;
+            --business) [ "$v" = "$BUSINESS" ] || refuse "serve business differs"; i=$((i + 1)) ;;
+            --tester-socket) TESTER_SOCKET=$((TESTER_SOCKET + 1)) ;;
+            --tester-port) refuse "case1-accept.sh retires tester TCP; use --tester-socket" ;;
+            *) refuse "unknown serve flag $a" ;;
+        esac
+        continue
+    fi
+    case "$a" in
+        --) past=1 ;;
+        --pm) ;;
+        --user) S_USER="$v"; i=$((i + 1)) ;;
+        --home) S_HOME="$v"; i=$((i + 1)) ;;
+        --business) A_BUSINESS="$v"; i=$((i + 1)) ;;
+        --node) NODE="$v"; i=$((i + 1)) ;;
+        --claude) CLAUDE="$v"; i=$((i + 1)) ;;
+        --profile) PROFILE="$v"; i=$((i + 1)) ;;
+        --copy) COPY_ID="$v"; copies=$((copies + 1)); i=$((i + 1)) ;;
+        *) refuse "$ARGS_FILE has $a before --, which case2-unit.sh does not take" ;;
+    esac
+done
+[ "$copies" = 1 ] || refuse "$ARGS_FILE needs exactly one --copy before --, not $copies"
+[[ "$S_USER" =~ ^[a-z_][a-z0-9_-]*$ ]] && [[ "$S_HOME" =~ ^/[A-Za-z0-9/._+-]+$ ]] && [[ "$A_BUSINESS" =~ ^[a-z0-9][a-z0-9-]*$ ]] &&
+    [[ "$NODE" =~ ^/[A-Za-z0-9/._+-]+$ ]] && [[ "$COPY_ID" =~ ^[0-9a-f]{40}$ ]] && [[ "$CLAUDE" =~ ^/[A-Za-z0-9/._+@-]+$ ]] ||
+    refuse "$ARGS_FILE lacks a plain --user, --home, --business, --node, --claude or --copy"
+[ "$PROFILE" = factory ] || refuse "$ARGS_FILE has --profile '${PROFILE}', not factory"
+[ "$A_BUSINESS" = "$BUSINESS" ] || refuse "$ARGS_FILE is for business $A_BUSINESS, not $BUSINESS"
+[[ "$PORT" =~ ^[1-9][0-9]{0,3}$ ]] && [ "$PORT" -le 1023 ] || refuse "$ARGS_FILE lacks a privileged numeric --port after --"
+[ "$TESTER_SOCKET" = 1 ] || refuse "$ARGS_FILE needs one bare --tester-socket after --"
+
+COPY="$S_HOME/.local/share/mosaic-stack/copies/$COPY_ID"
+DATA_ROOT="$S_HOME/.mosaic-dev"
+CRED="$S_HOME/.config/mosaic-dev/secrets/claude-session.env"
+BUSINESS_FILE="$S_HOME/.config/mosaic-dev/businesses/$BUSINESS.json"
+BUS_UNIT="mosaic-bus@$BUSINESS.service" CON_UNIT=mosaic-webui.service
+HOSTCHECK=/usr/local/lib/mosaic-stack/hostcheck.sh
+SETTINGS=/etc/claude-code/managed-settings.json
+LABEL_OUTER='bwrap (enforce)' LABEL_CHILD='bwrap//&unpriv_bwrap (enforce)'
+AS_USER=(sudo -u "$S_USER" -H env "PATH=$(dirname "$NODE"):/usr/local/bin:/usr/bin:/bin")
+WORK="$(mktemp -d)" || refuse "cannot make a temp dir"
+trap 'rm -rf -- "$WORK"' EXIT
+
+# Row253: bounded unprivileged metadata, parsed by root without running copy code.
+# row253-supervisor-begin
+IFS= read -r -d '' TESTER_SUPERVISOR <<'MOSAIC_TESTER_SUPERVISOR' || :
+set +m
+seconds="$1" setsid_bin="$2" sleep_bin="$3"; shift 3
+child="" timer="" verified=0
+stat_fields() {
+    local pid="$1" raw rest
+    if ! raw="$(<"/proc/$pid/stat")" 2>/dev/null; then
+        [ -e "/proc/$pid/stat" ] && return 1
+        return 3
+    fi
+    [ -n "$raw" ] || { [ -e "/proc/$pid/stat" ] && return 1; return 3; }
+    rest="${raw##*) }"
+    [ "$rest" != "$raw" ] || return 1
+    read -r ST_STATE ST_PARENT ST_GROUP ST_SESSION _ <<< "$rest"
+    [[ "$ST_STATE" =~ ^[A-Za-z]$ && "$ST_SESSION" =~ ^[0-9]+$ && "$ST_GROUP" =~ ^[0-9]+$ ]]
+}
+clock_cs() {
+    local boot spare
+    read -r boot spare < /proc/uptime || return 1
+    [[ "$boot" =~ ^([0-9]+)\.([0-9]{2})$ ]] || return 1
+    CLOCK_CS=$((10#${BASH_REMATCH[1]} * 100 + 10#${BASH_REMATCH[2]}))
+}
+clean_session() {
+    local entry pid rc live until
+    clock_cs || return 1
+    until=$((CLOCK_CS + 25))
+    while :; do
+        live=0
+        for entry in /proc/[0-9]*/stat; do
+            pid="${entry%/stat}"; pid="${pid##*/}"
+            rc=0; stat_fields "$pid" || rc=$?
+            [ "$rc" != 3 ] || continue
+            [ "$rc" = 0 ] || return 1
+            [ "$ST_SESSION" = "$child" ] || continue
+            case "$ST_STATE" in Z|X) continue ;; esac
+            live=1
+            if ! kill -KILL "$pid" 2>/dev/null; then
+                rc=0; stat_fields "$pid" || rc=$?
+                [ "$rc" = 3 ] || { [ "$rc" = 0 ] && { [ "$ST_STATE" = Z ] || [ "$ST_STATE" = X ]; }; } || return 1
+            fi
+        done
+        [ "$live" != 0 ] || return 0
+        clock_cs || return 1
+        [ "$CLOCK_CS" -lt "$until" ] || return 1
+        "$sleep_bin" 0.01
+    done
+}
+finish() {
+    local rc="$?"
+    trap - EXIT HUP INT TERM
+    if [ "$verified" = 1 ]; then
+        clean_session || rc=86
+    elif [ -n "$child" ]; then
+        kill -KILL "$child" 2>/dev/null || :
+    fi
+    [ -z "$child" ] || wait "$child" 2>/dev/null || :
+    if [ -n "$timer" ]; then kill -KILL "$timer" 2>/dev/null || :; wait "$timer" 2>/dev/null || :; fi
+    exit "$rc"
+}
+trap finish EXIT
+trap 'exit 88' HUP INT TERM
+"$sleep_bin" "$seconds" & timer=$!
+"$setsid_bin" "$@" & child=$!
+for ((attempt=0; attempt<100; attempt++)); do
+    rc=0; stat_fields "$child" || rc=$?
+    [ "$rc" = 0 ] || exit 85
+    if [ "$ST_SESSION" = "$child" ]; then verified=1; break; fi
+    kill -0 "$timer" 2>/dev/null || exit 81
+    "$sleep_bin" 0.002
+done
+[ "$verified" = 1 ] || exit 85
+while kill -0 "$child" 2>/dev/null; do
+    kill -0 "$timer" 2>/dev/null || exit 81
+    "$sleep_bin" 0.01
+done
+kill -0 "$timer" 2>/dev/null || exit 81
+rc=0; wait "$child" || rc=$?
+[ "$rc" = 0 ] || exit 87
+exit 0
+MOSAIC_TESTER_SUPERVISOR
+# row253-supervisor-end
+
+tester_tools() {
+    local input target p st magic
+    TS_BASH="" TS_SETSID="" TS_SLEEP="" TS_TIMEOUT="" TS_HEAD=""
+    for input in /bin/bash /usr/bin/setsid /usr/bin/sleep /usr/bin/timeout /usr/bin/head; do
+        target="$(realpath -e -- "$input" 2>/dev/null)" || return 1
+        case "$target" in /home/*|/root/*|/run/user/*) return 1 ;; esac
+        [ -f "$target" ] && [ -x "$target" ] && [ ! -L "$target" ] || return 1
+        p="$target"
+        while :; do
+            st="$(stat -c '%u %a' -- "$p" 2>/dev/null)" || return 1
+            [ "${st% *}" = 0 ] && [[ "${st#* }" =~ ^[0-7]{3,4}$ ]] && (( (8#${st#* } & 8#022) == 0 )) || return 1
+            [ "$p" != / ] || break
+            p="${p%/*}"; [ -n "$p" ] || p=/
+        done
+        magic="$(/usr/bin/od -An -tx1 -N4 -- "$target" 2>/dev/null | tr -d ' \n')"
+        [ "$magic" = 7f454c46 ] || return 1
+        case "$input" in
+            /bin/bash) TS_BASH="$target" ;; /usr/bin/setsid) TS_SETSID="$target" ;;
+            /usr/bin/sleep) TS_SLEEP="$target" ;; /usr/bin/timeout) TS_TIMEOUT="$target" ;;
+            /usr/bin/head) TS_HEAD="$target" ;;
+        esac
+    done
+}
+tester_capture_reason() {
+    case "$1" in
+        81) echo inner-timeout ;; 82) echo outer-timeout ;; 83) echo output-limit ;;
+        84) echo supervisor-tools ;; 85) echo inner-session ;; 86) echo inner-cleanup ;;
+        *) echo inner-command ;;
+    esac
+}
+tester_capture() (
+    local inner="$1" outer="$2" maximum="$3" user="$4" home="$5" path="$6" file notice child="" rc=0; shift 6
+    tester_tools || exit 84
+    file="$(mktemp)" || exit 88
+    notice="$(mktemp)" || { rm -f -- "$file"; exit 88; }
+    trap 'if [ -n "$child" ]; then kill -KILL -- "-$child" 2>/dev/null || :; wait "$child" 2>/dev/null || :; fi; rm -f -- "$file" "$notice"' EXIT
+    trap 'exit 88' HUP INT TERM
+    LC_ALL=C "$TS_TIMEOUT" --verbose --signal=KILL "${outer}s" "$TS_BASH" -c '
+        set -o pipefail
+        maximum="$1"; head_bin="$2"; shift 2
+        "$@" 2>/dev/null | "$head_bin" -c "$((maximum + 1))"
+    ' -- "$maximum" "$TS_HEAD" sudo -u "$user" -H env -i "HOME=$home" "PATH=$path" "$TS_BASH" -c "$TESTER_SUPERVISOR" -- "$inner" "$TS_SETSID" "$TS_SLEEP" "$@" > "$file" 2> "$notice" &
+    child=$!
+    wait "$child" 2>/dev/null || rc=$?
+    kill -KILL -- "-$child" 2>/dev/null || :
+    # Only GNU timeout and the trusted head can write this root-side channel.
+    if [ "$rc" = 137 ] && [[ "$(<"$notice")" == *': sending signal KILL to command '* ]]; then exit 82; fi
+    [ "$(wc -c < "$file")" -le "$maximum" ] || exit 83
+    [ "$rc" = 0 ] || { case "$rc" in 81|85|86|87|88) exit "$rc" ;; *) exit 87 ;; esac; }
+    cat -- "$file"
+)
+
+TESTER_QUERY='import {readFileSync} from "node:fs";import {pathToFileURL} from "node:url";const m=await import(pathToFileURL(process.argv[1]).href);const s=m.loadSystem();console.log(JSON.stringify({dataRoot:s.dataRoot,socket:readFileSync(process.argv[2],"utf8").includes("MOSAIC_TESTER_SOCKET_V1")}));'
+tester_facts() {
+    local LC_ALL=C pattern='^\{"dataRoot":"([A-Za-z0-9/._@+-]+)","socket":(true|false)\}$'
+    [[ "$1" =~ $pattern ]] || return 1
+    TS_DATA="${BASH_REMATCH[1]}" TS_MARKED="${BASH_REMATCH[2]}"
+}
+tester_location() {
+    local LC_ALL=C data="$1" home="$2" uid="$3" prefix="$4" part at="" st
+    TS_REASON="" TS_SOCKET=""
+    case "$data" in /*) ;; *) TS_REASON=not-absolute; return 1 ;; esac
+    case "$data" in *[!A-Za-z0-9/._@+-]*) TS_REASON=not-ascii; return 1 ;; esac
+    case "$data/" in */./*|*/../*|*//* ) TS_REASON=not-normalized; return 1 ;; esac
+    [ "${data%/}" = "$data" ] || { TS_REASON=not-normalized; return 1; }
+    case "$data" in "$home"/*) ;; *) TS_REASON=outside-home; return 1 ;; esac
+    case "$home/" in /home/*|/root/*|/run/user/*|/tmp/*|/var/tmp/*) TS_REASON=protected-private-home; return 1 ;; esac
+    TS_SOCKET="$data/console/tester.sock"
+    [ "${#TS_SOCKET}" -le 107 ] || { TS_REASON=too-long; return 1; }
+    local -a parts
+    IFS=/ read -r -a parts <<< "$data"
+    for part in "${parts[@]}"; do
+        [ -n "$part" ] || continue
+        at="$at/$part"
+        [ ! -L "$prefix$at" ] || { TS_REASON=symlink-component; return 1; }
+        if [ -e "$prefix$at" ]; then
+            [ -d "$prefix$at" ] || { TS_REASON=component-type; return 1; }
+        fi
+    done
+    [ "${5:-}" != observe ] || return 0
+    local parent="$prefix$data/console"
+    [ ! -L "$parent" ] || { TS_REASON=symlink-parent; return 1; }
+    if [ -e "$parent" ]; then
+        [ -d "$parent" ] || { TS_REASON=parent-type; return 1; }
+        st="$(stat -c '%u %a' -- "$parent")" || { TS_REASON=parent-stat; return 1; }
+        [ "${st% *}" = "$uid" ] || { TS_REASON=parent-owner; return 1; }
+        [[ "${st#* }" =~ ^[0-7]{3,4}$ ]] && (( (8#${st#* } & 8#077) == 0 )) || { TS_REASON=parent-mode; return 1; }
+    fi
+}
+# tester-location-end
+
+
+# --- Output ---
+
+MARKS=(pass FAIL closed "accepted Q182+Q183" "accepted Q183" "accepted mos-1096" unnamed)
+declare -A COUNT=()
+F_FAILED=0
+# Text the stack's user wrote, made safe to print: printable ASCII, one line, at most 200 bytes.
+clean() { tr -c '[:print:]' ' ' <<< "$1" | cut -c1-200 | sed 's/ *$//'; }
+line() { local id="$1" path="$2" mark="$3"; shift 3; echo "$id $path $mark $*"; COUNT[$mark]=$(( ${COUNT[$mark]:-0} + 1 )); }
+fpass() { line "$1" "$2" pass "${@:3}"; }
+ffail() { line "$1" "$2" FAIL "${@:3}"; F_FAILED=1; }
+
+# --- The account database: getent on the host, the seam's files under --root ---
+
+db() {
+    if [ -n "$ROOT" ]; then
+        if [ $# -gt 1 ]; then awk -F: -v k="$2" '$1 == k' "$ROOT/etc/$1"; else cat "$ROOT/etc/$1"; fi
+    else
+        getent "$@"
+    fi
+}
+uid_of() { db passwd "$1" | cut -d: -f3; }
+gid_of() { db passwd "$1" | cut -d: -f4; }
+# The group ids USER belongs to, as `id -G USER` prints them: the primary gid, then each group
+# whose member list names USER.
+groups_of() {
+    local g; g="$(gid_of "$1")"
+    [ -n "$g" ] || return 0
+    { echo "$g"; db group | awk -F: -v u="$1" '{ n = split($4, m, ","); for (i = 1; i <= n; i++) if (m[i] == u) print $3 }'; } | awk '!seen[$0]++'
+}
+names_of_groups() { local g; for g in "$@"; do db group | awk -F: -v g="$g" '$3 == g { print $1 }'; done; }
+MOSAIC_UID="$(uid_of "$S_USER")"
+[[ "$MOSAIC_UID" =~ ^[1-9][0-9]*$ ]] || refuse "stack account has no non-root uid"
+[ "$(db passwd "$S_USER" | cut -d: -f6)" = "$S_HOME" ] || refuse "saved home differs from account home"
+QUERY="$(tester_capture 5 7 4096 "$S_USER" "$S_HOME" "$(dirname "$NODE"):/usr/local/bin:/usr/bin:/bin" "$NODE" --input-type=module -e "$TESTER_QUERY" "$COPY/packages/cli/src/config.mjs" "$COPY/packages/webui/src/cli.mjs")" || refuse "tester config query $(tester_capture_reason "$?")"
+tester_facts "$QUERY" || refuse "tester config query has invalid facts"
+[ "$TS_MARKED" = true ] || refuse "target does not support --tester-socket"
+tester_location "$TS_DATA" "$S_HOME" "$MOSAIC_UID" "$ROOT" observe || refuse "tester path refuses $TS_REASON"
+TESTER_PATH="$TS_SOCKET"
+
+# --- systemd, /proc and listeners ---
+
+# KEY=VALUE lines for UNIT's properties.
+unit_show() { local u="$1"; shift; systemctl show "$u" "${@/#/-p}" 2>/dev/null; }
+prop() { sed -n "s/^$2=//p" <<< "$1" | tail -n 1; }
+# The real, effective, saved and filesystem uids of PID, space-separated.
+proc_uids() { awk '$1 == "Uid:" { print $2, $3, $4, $5 }' "$ROOT/proc/$1/status" 2>/dev/null; }
+proc_label() { local l; l="$(cat "$ROOT/proc/$1/attr/current" 2>/dev/null)" || return 1; printf '%s' "${l%$'\n'}"; }
+# One `ADDRESS PIDS` line per TCP listener on port $1, PIDS comma-separated.
+listeners() {
+    ss -Hltnp 2>/dev/null | awk -v p="$1" '{
+        n = split($4, a, ":"); if (a[n] != p) next
+        addr = substr($4, 1, length($4) - length(p) - 1); pids = ""; s = $0
+        while (match(s, /pid=[0-9]+/)) { pids = pids (pids == "" ? "" : ",") substr(s, RSTART + 4, RLENGTH - 4); s = substr(s, RSTART + RLENGTH) }
+        print addr, pids
+    }'
+}
+# 0 when port $1 has a listener and every one is on 127.0.0.1, held by pid $2 alone.
+loopback_by() {
+    local addr pids p any=0
+    [ -n "$2" ] && [ "$2" != 0 ] || return 1
+    while read -r addr pids; do
+        [ -n "$addr" ] || continue
+        any=1
+        [ "$addr" = 127.0.0.1 ] || return 1
+        for p in ${pids//,/ }; do [ "$p" = "$2" ] || return 1; done
+        [ -n "$pids" ] || return 1
+    done <<< "$(listeners "$1")"
+    [ "$any" = 1 ]
+}
+listener_text() { local t; t="$(listeners "$1" | tr '\n' ';')"; echo "${t:-none}"; }
+
+BUS_SHOW="$(unit_show "$BUS_UNIT" ActiveState User MainPID)"
+CON_SHOW="$(unit_show "$CON_UNIT" ActiveState User MainPID)"
+CON_PID="$(prop "$CON_SHOW" MainPID)"
+
+# --- F checks ---
+
+check_f1() {
+    local u show state user pid uids why=""
+    for u in "$BUS_UNIT" "$CON_UNIT"; do
+        if [ "$u" = "$BUS_UNIT" ]; then show="$BUS_SHOW"; else show="$CON_SHOW"; fi
+        state="$(prop "$show" ActiveState)" user="$(prop "$show" User)" pid="$(prop "$show" MainPID)"
+        uids="$(proc_uids "${pid:-0}")"
+        [ "$state" = active ] || { why+="$u is ${state:-unknown}; "; continue; }
+        [ "$user" = "$S_USER" ] || { why+="$u has User=${user:-unset}; "; continue; }
+        [ -n "$MOSAIC_UID" ] && [ "$uids" = "$MOSAIC_UID $MOSAIC_UID $MOSAIC_UID $MOSAIC_UID" ] ||
+            why+="$u MainPID ${pid:-none} has uids '${uids:-unreadable}', not $S_USER's ${MOSAIC_UID:-unknown}; "
+    done
+    if [ -z "$why" ]; then fpass F1 units-user "$BUS_UNIT and $CON_UNIT are active as $S_USER (uid $MOSAIC_UID)"
+    else ffail F1 units-user "${why%; }"; fi
+}
+
+check_f2() {
+    local rc=0
+    curl -fsS --max-time 10 -o /dev/null "http://127.0.0.1:$PORT/healthz" 2>/dev/null || rc=$?
+    if [ "$rc" != 0 ]; then ffail F2 console-loopback "curl http://127.0.0.1:$PORT/healthz exited $rc"
+    elif ! loopback_by "$PORT" "$CON_PID"; then ffail F2 console-loopback "port $PORT listeners are '$(listener_text "$PORT")', not 127.0.0.1 by the Console's MainPID ${CON_PID:-none}"
+    else fpass F2 console-loopback "healthz answers, and $PORT is bound to 127.0.0.1 only, by MainPID $CON_PID"; fi
+}
+
+# F5's scan: an outer /usr/bin/bwrap owned by the stack's user with a claude descendant. Sets F5_OK
+# when one pair has both labels exactly, F5_WHY to the last mismatch otherwise.
+F5_OK="" F5_WHY="no /usr/bin/bwrap process of $S_USER with a claude descendant was seen while the reply was pending"
+scan_f5() {
+    local pid ppid uids kids q c argv0 comm lo lc
+    local -A parent=() children=() bw=()
+    # One read of every PPid line and one of every exe link, so a scan stays short on a busy host.
+    while read -r pid ppid; do
+        parent[$pid]="$ppid" children[$ppid]+=" $pid"
+    done < <(grep -H '^PPid:' "$ROOT"/proc/[0-9]*/status 2>/dev/null | sed -n 's#^.*/proc/\([0-9]*\)/status:PPid:[[:space:]]*\([0-9]*\)$#\1 \2#p')
+    while read -r pid; do
+        [[ "$pid" =~ ^[0-9]+$ ]] && [ -n "${parent[$pid]:-}" ] && bw[$pid]=1
+    done < <(find "$ROOT/proc" -mindepth 2 -maxdepth 2 -name exe -lname /usr/bin/bwrap -printf '%h\n' 2>/dev/null | sed 's#.*/##')
+    for pid in "${!bw[@]}"; do
+        [ -z "${bw[${parent[$pid]}]:-}" ] || continue
+        uids="$(proc_uids "$pid")"
+        [ -n "$MOSAIC_UID" ] && [ "${uids%% *}" = "$MOSAIC_UID" ] || continue
+        # Every descendant, breadth first.
+        kids=() q=("$pid")
+        while [ ${#q[@]} -gt 0 ]; do
+            for c in ${children[${q[0]}]:-}; do kids+=("$c") q+=("$c"); done
+            q=("${q[@]:1}")
+        done
+        for c in "${kids[@]}"; do
+            argv0="$(tr '\0' '\n' < "$ROOT/proc/$c/cmdline" 2>/dev/null | sed -n 1p)"
+            comm="$(cat "$ROOT/proc/$c/comm" 2>/dev/null)"
+            [[ "${argv0##*/}" == claude* ]] || [[ "$comm" == claude* ]] || continue
+            lo="$(proc_label "$pid")" lc="$(proc_label "$c")"
+            if [ "$lo" = "$LABEL_OUTER" ] && [ "$lc" = "$LABEL_CHILD" ]; then
+                F5_OK="bwrap $pid reads '$lo' and its claude descendant $c reads '$lc'"; return 0
+            fi
+            F5_WHY="bwrap $pid reads '$lo' and its claude descendant $c reads '$lc', not '$LABEL_OUTER' and '$LABEL_CHILD'"
+        done
+    done
+    return 1
+}
+
+# F3 and F5 together: the message goes out in the background and the scan runs until it is answered.
+check_f3_f5() {
+    local marker text rc=0 out err n tpid
+    marker="case1-accept-$(od -An -N6 -tx1 /dev/urandom | tr -d ' \n')"
+    text="$marker: this is the Case 1 acceptance; reply with one short line."
+    timeout 330 "${AS_USER[@]}" "$COPY/scripts/mosaic" talk chief "$text" --business "$BUSINESS" --tester --wait 300 > "$WORK/talk.out" 2> "$WORK/talk.err" &
+    tpid=$!
+    while :; do
+        scan_f5 && break
+        kill -0 "$tpid" 2>/dev/null || break
+        sleep 0.5
+    done
+    wait "$tpid" || rc=$?
+    # Both the sent line and the reply are on stdout; an error is on stderr.
+    out="$(cat "$WORK/talk.out")" err="$(cat "$WORK/talk.err")"
+    n="$(grep -c . <<< "$out")"
+    if [ "$rc" = 0 ] && grep -q "^sent [^ ]* to chief" <<< "$out" && [ "$n" -ge 2 ]; then
+        fpass F3 tester-reply "chief replied to $marker"
+    else
+        ffail F3 tester-reply "talk exited $rc with $n lines on stdout; last: $(clean "$(tail -n 1 <<< "${err:-$out}")")"
+    fi
+    if [ -n "$F5_OK" ]; then F5_LINE=(fpass "$F5_OK"); else F5_LINE=(ffail "$F5_WHY"); fi
+}
+
+check_f4() {
+    local rc=0 out
+    out="$("${AS_USER[@]}" "$COPY/scripts/case2-precheck.sh" --business "$BUSINESS" --profile factory 2>&1)" || rc=$?
+    if [ "$rc" = 0 ]; then fpass F4 precheck "case2-precheck.sh --profile factory exits 0"
+    else ffail F4 precheck "case2-precheck.sh --profile factory exited $rc; last: $(clean "$(tail -n 1 <<< "$out")")"; fi
+}
+
+check_f6() {
+    local want="/opt/mosaic-stack/claude-$CLAUDE_PIN/" v
+    [[ "$CLAUDE" == "$want"* ]] || { ffail F6 claude-pin "--claude $CLAUDE is not under $want"; return; }
+    [[ "$CLAUDE/" != */../* ]] || { ffail F6 claude-pin "--claude $CLAUDE has a .. segment"; return; }
+    v="$("${AS_USER[@]}" "$CLAUDE" --version 2>/dev/null | sed -n 1p)"
+    if [ "$v" = "$CLAUDE_PIN (Claude Code)" ]; then fpass F6 claude-pin "$CLAUDE prints '$v'"
+    else ffail F6 claude-pin "$CLAUDE --version prints '$(clean "$v")', not '$CLAUDE_PIN (Claude Code)'"; fi
+}
+
+# The PM check confirm runs (stack-release.sh pm_external): exactly one live launches list entry for
+# launch.by, for this business. The stack's user runs the whole check and prints one result line.
+F7_JS='
+const {readFileSync}=require("node:fs");const {spawnSync}=require("node:child_process");
+const [file,cli,b]=process.argv.slice(1);
+let by;
+try{by=JSON.parse(readFileSync(file,"utf8")).launch?.by}catch(e){console.log(`fail cannot read ${file}: ${e.code??"not JSON"}`);process.exit(0)}
+if(typeof by!=="string"||!by){console.log("fail the business file has no launch.by");process.exit(0)}
+const r=spawnSync(cli,["launches","list","--json"],{encoding:"utf8"});
+if(r.status!==0){console.log(`fail launches list exited ${r.status}`);process.exit(0)}
+let l;try{l=JSON.parse(r.stdout)}catch{console.log("fail launches list printed no JSON");process.exit(0)}
+const live=Array.isArray(l)?l.filter((x)=>x&&x.instance===by&&x.live===true):[];
+console.log(live.length!==1?`fail ${live.length} live launches of ${by}`:live[0].business!==b?`fail the live launch of ${by} is for ${live[0].business}`:`ok ${by} run ${live[0].run}`);'
+check_f7() {
+    local out
+    out="$("${AS_USER[@]}" "$NODE" -e "$F7_JS" -- "$BUSINESS_FILE" "$COPY/scripts/mosaic" "$BUSINESS" 2>/dev/null | sed -n 1p)"
+    if [[ "$out" =~ ^ok\ [a-z0-9][a-z0-9-]*\ run\ [A-Za-z0-9._-]+$ ]]; then fpass F7 pm-live "one live launch: ${out#ok }"
+    else ffail F7 pm-live "$(clean "${out#fail }")"; fi
+}
+
+check_f8() {
+    local s
+    s="$(stat -c '%U %a %F' -- "$ROOT$CRED" 2>/dev/null)" || s="missing"
+    if [ ! -L "$ROOT$CRED" ] && [ "$s" = "$S_USER 600 regular file" ]; then fpass F8 credential-file "$CRED is '$s'"
+    else ffail F8 credential-file "$CRED is '$s', not '$S_USER 600 regular file'"; fi
+}
+
+# Empty when $1 and every directory above it, up to /, are the running user's (root's on the host) with
+# no group or other write: case2-unit.sh's root_only rule for --node, checked again before root runs it.
+# Otherwise the first path that breaks the rule. A symlink breaks it, because its mode is 777.
+not_root_only() {
+    local p="$1" st
+    while :; do
+        st="$(stat -c '%u %a' -- "$ROOT$p" 2>/dev/null)" || { echo "$p (cannot stat)"; return; }
+        [ "${st% *}" = "$(id -u)" ] && (( (8#${st#* } & 8#022) == 0 )) || { echo "$p (uid ${st% *}, mode ${st#* })"; return; }
+        [ "$p" = / ] && return
+        p="$(dirname -- "$p")"
+    done
+}
+
+check_f9() {
+    local s v bad
+    s="$(stat -c '%U:%G %a %F' -- "$ROOT$SETTINGS" 2>/dev/null)" || s="missing"
+    [ ! -L "$ROOT$SETTINGS" ] && [ "$s" = "root:root 644 regular file" ] || { ffail F9 autoupdater-off "$SETTINGS is '$s', not 'root:root 644 regular file'"; return; }
+    # Root runs node here, so it runs only the pinned path, and only when nothing but root can replace it.
+    [ "$NODE" = "/opt/mosaic-stack/node-$NODE_PIN/bin/node" ] || { ffail F9 autoupdater-off "root won't run --node $NODE: it is not the --node-pin path"; return; }
+    bad="$(not_root_only "$NODE")"
+    [ -z "$bad" ] || { ffail F9 autoupdater-off "root won't run --node $NODE: $bad is not root's alone"; return; }
+    v="$("$ROOT$NODE" -e 'const s=JSON.parse(require("node:fs").readFileSync(process.argv[1],"utf8"));process.stdout.write(JSON.stringify(s?.env?.DISABLE_AUTOUPDATER??null))' -- "$ROOT$SETTINGS" 2>/dev/null)" || v="unreadable"
+    if [ "$v" = '"1"' ]; then fpass F9 autoupdater-off "$SETTINGS is root:root 0644 with env.DISABLE_AUTOUPDATER \"1\""
+    else ffail F9 autoupdater-off "$SETTINGS env.DISABLE_AUTOUPDATER is $v, not \"1\""; fi
+}
+
+check_f10() {
+    local want="/opt/mosaic-stack/node-$NODE_PIN/bin/node" v
+    [ "$NODE" = "$want" ] || { ffail F10 node-pin "--node $NODE is not $want"; return; }
+    v="$("${AS_USER[@]}" "$NODE" --version 2>/dev/null | sed -n 1p)"
+    if [ "$v" = "$NODE_PIN" ]; then fpass F10 node-pin "$NODE prints $v"
+    else ffail F10 node-pin "$NODE --version prints '$(clean "$v")', not $NODE_PIN"; fi
+}
+
+check_f11() {
+    local d="$ROOT$DATA_ROOT/discord" found
+    if [ -L "$d" ]; then ffail F11 no-discord "$DATA_ROOT/discord is a symlink"; return; fi
+    [ -d "$d" ] || { fpass F11 no-discord "$DATA_ROOT/discord is absent"; return; }
+    found="$(find "$d" -maxdepth 1 -name '*.json' -printf '%f ' 2>/dev/null)"
+    if [ -z "$found" ]; then fpass F11 no-discord "$DATA_ROOT/discord holds no binding"
+    else ffail F11 no-discord "$DATA_ROOT/discord holds bindings: ${found% }"; fi
+}
+
+# --- P checks ---
+
+check_p1() {
+    local out
+    out="$(sudo -l -U "$S_USER" 2>&1)"
+    if grep -q "is not allowed to run sudo" <<< "$out"; then line P1 "$S_USER-sudo" closed "sudo -l: $(clean "$(sed -n 1p <<< "$out")")"
+    else line P1 "$S_USER-sudo" unnamed "sudo -l: $(clean "$(tr '\n' ' ' <<< "$out")")"; fi
+}
+
+check_p2() {
+    local gs keys="$ROOT$S_HOME/.ssh/authorized_keys" kstate n
+    gs="$(groups_of "$S_USER" | tr '\n' ' ')"; gs="${gs% }"
+    n="$(wc -w <<< "$gs")"
+    if [ ! -e "$keys" ] && [ ! -L "$keys" ]; then kstate=absent
+    elif [ -f "$keys" ] && [ ! -L "$keys" ] && [ ! -s "$keys" ]; then kstate=empty
+    else kstate=present; fi
+    if [ "$n" = 1 ] && [ "$kstate" != present ]; then line P2 "$S_USER-groups-keys" closed "id -G is '$gs'; authorized_keys is $kstate"
+    else line P2 "$S_USER-groups-keys" unnamed "id -G is '$gs'; authorized_keys is $kstate"; fi
+}
+
+check_p3() {
+    local n
+    n="$(sudo -l -U localadmin 2>&1 | grep -c NOPASSWD)"
+    line P3 localadmin-sudo "accepted Q183" "sudo -l -U localadmin lists $n NOPASSWD lines"
+}
+
+check_p4() { line P4 pve-root-pbs "accepted Q182+Q183" "root on pve over VM 1008, and PBS backups that hold $S_HOME with the credential; this script can't see pve"; }
+
+check_p5() {
+    local gs reach
+    if [ -z "$(uid_of jarvis)" ]; then line P5 jarvis-reach closed "no jarvis account"; return; fi
+    gs="$(names_of_groups $(groups_of jarvis) | tr '\n' ' ')"
+    reach="$(tr ' ' '\n' <<< "$gs" | grep -xE 'sudo|docker|lxd' | tr '\n' ' ')"
+    if [ -z "$reach" ]; then line P5 jarvis-reach closed "jarvis is in none of sudo, docker and lxd (groups: ${gs% })"
+    else line P5 jarvis-reach unnamed "jarvis is in ${reach% }"; fi
+}
+
+check_p6() {
+    local g m members bad=0
+    for g in sudo docker lxd; do
+        members="$(db group "$g" | cut -d: -f4)"
+        for m in ${members//,/ }; do
+            [ "$g" = sudo ] && [ "$m" = localadmin ] && continue
+            line P6 "group-$g" unnamed "$m is a member of $g"; bad=1
+        done
+    done
+    [ "$bad" = 1 ] || line P6 group-members closed "sudo holds only localadmin, and docker and lxd have no members"
+}
+
+check_p7() {
+    local found
+    found="$(grep -rlw -- "$S_USER" "$ROOT/etc/sudoers.d" 2>/dev/null | sed "s#^$ROOT##" | tr '\n' ' ')"
+    if [ -z "$found" ]; then line P7 sudoers-d closed "no file under /etc/sudoers.d names $S_USER"
+    else line P7 sudoers-d unnamed "files naming $S_USER: ${found% }"; fi
+}
+
+check_p8() {
+    local other
+    other="$(listeners 7331)$(listeners 7333)"
+    if loopback_by "$PORT" "$CON_PID" && [ -z "$other" ]; then
+        line P8 lan-listeners closed "$PORT is on 127.0.0.1 only by MainPID $CON_PID; no TCP listener on 7331 or 7333; tester uses $TESTER_PATH"
+    else
+        line P8 lan-listeners unnamed "$PORT: $(listener_text "$PORT"); 7333: $(listener_text 7333); 7331: $(listener_text 7331); Console MainPID ${CON_PID:-none}"
+    fi
+}
+
+check_p9() {
+    local out n missing=() rc=0 err mg others
+    out="$("$ROOT$HOSTCHECK" --check 2>/dev/null)"
+    for n in 1 2 3 4 5 6; do grep -q "^ok $n " <<< "$out" || missing+=("hostcheck item $n has no ok line")
+    done
+    err="$(sudo -u jarvis /usr/bin/bwrap --version 2>&1 >/dev/null)" || rc=$?
+    [ "$rc" != 0 ] && grep -q "Permission denied" <<< "$err" || missing+=("sudo -u jarvis /usr/bin/bwrap --version exited $rc without Permission denied")
+    mg="$(gid_of "$S_USER")"
+    [ -n "$mg" ] && [ -z "$(db group "$S_USER" | cut -d: -f4)" ] || missing+=("group $S_USER lists members, or $S_USER has no group")
+    others="$(db passwd | awk -F: -v g="$mg" -v u="$S_USER" '$4 == g && $1 != u { print $1 }' | tr '\n' ' ')"
+    [ -z "$others" ] || missing+=("other accounts have $S_USER's gid $mg: ${others% }")
+    if [ ${#missing[@]} = 0 ]; then
+        line P9 bwrap-userns "accepted mos-1096" "hostcheck items 1-6 ok, jarvis is denied bwrap, and group $S_USER has no other member"
+    else
+        for n in "${missing[@]}"; do line P9 bwrap-userns unnamed "$n"; done
+    fi
+}
+
+# P10 is an observation of mutable same-uid state, never a closure ruling.
+TESTER_PEER='import socket,struct,sys
+s=socket.socket(socket.AF_UNIX,socket.SOCK_STREAM)
+try:
+ s.settimeout(1)
+ s.connect(sys.argv[1])
+ p=struct.unpack("3i",s.getsockopt(socket.SOL_SOCKET,socket.SO_PEERCRED,12))
+ print(*p)
+finally:
+ s.close()'
+tester_snapshot() {
+    local parent="${TESTER_PATH%/*}" p s pid
+    [ ! -L "$ROOT$parent" ] && [ ! -L "$ROOT$TESTER_PATH" ] || return 1
+    p="$(stat -c '%u %a %F %d %i' -- "$ROOT$parent" 2>/dev/null)" || return 1
+    s="$(stat -c '%u %a %F %d %i' -- "$ROOT$TESTER_PATH" 2>/dev/null)" || return 1
+    [[ "$p" =~ ^$MOSAIC_UID\ 700\ directory\ [0-9]+\ [0-9]+$ ]] || return 1
+    [[ "$s" =~ ^$MOSAIC_UID\ 600\ socket\ [0-9]+\ [0-9]+$ ]] || return 1
+    pid="$(prop "$(unit_show "$CON_UNIT" MainPID)" MainPID)"
+    [[ "$pid" =~ ^[1-9][0-9]*$ ]] && [ "$pid" = "$CON_PID" ] || return 1
+    [ "$(proc_uids "$pid")" = "$MOSAIC_UID $MOSAIC_UID $MOSAIC_UID $MOSAIC_UID" ] || return 1
+    printf '%s|%s|%s' "$pid" "$p" "$s"
+}
+tester_python() {
+    local real bad magic
+    # Resolve the system entry, then validate the target and every ancestor.
+    [ -f "$ROOT/usr/bin/python3" ] && [ -x "$ROOT/usr/bin/python3" ] || return 1
+    real="$(realpath -e -- "$ROOT/usr/bin/python3" 2>/dev/null)" || return 1
+    [ -z "$ROOT" ] || real="${real#"$ROOT"}"
+    case "$real" in /home/*|/root/*|/run/user/*|"$S_HOME"/*) return 1 ;; esac
+    bad="$(not_root_only "$real")"; [ -z "$bad" ] || return 1
+    bad="$(not_root_only /usr/bin)"; [ -z "$bad" ] || return 1
+    magic="$(od -An -tx1 -N4 -- "$ROOT$real" 2>/dev/null | tr -d ' \n')"
+    [ "$magic" = 7f454c46 ] || return 1
+    printf '%s' "$real"
+}
+check_p10() {
+    local floor before after python peer pid uid gid why="" pattern='^([1-9][0-9]{0,9}) ([0-9]{1,10}) ([0-9]{1,10})$'
+    floor="$(cat "$ROOT/proc/sys/net/ipv4/ip_unprivileged_port_start" 2>/dev/null)"
+    [[ "$floor" =~ ^[0-9]{1,5}$ ]] && [ "$floor" -gt "$PORT" ] || why=floor
+    before="$(tester_snapshot)" || why=metadata
+    python="$(tester_python)" || why=interpreter
+    if [ -z "$why" ]; then
+        peer="$(tester_capture 2 4 128 "$S_USER" "$S_HOME" "$(dirname "$NODE"):/usr/local/bin:/usr/bin:/bin" "$python" -I -S -c "$TESTER_PEER" "$TESTER_PATH")" || why="probe-$(tester_capture_reason "$?")"
+        if [[ "$peer" =~ $pattern ]]; then
+            pid="${BASH_REMATCH[1]}" uid="${BASH_REMATCH[2]}" gid="${BASH_REMATCH[3]}"
+            [ "$pid" = "$CON_PID" ] && [ "$uid" = "$MOSAIC_UID" ] && [ "$gid" -le 2147483647 ] || why=peer
+        else [ -n "$why" ] || why=probe; fi
+        after="$(tester_snapshot)" || why=metadata
+        [ "$before" = "$after" ] || why=changed
+    fi
+    if [ -z "$why" ]; then
+        line P10 tester-socket-squat unnamed "boundary=observed path=$TESTER_PATH parent=0700 owner=$MOSAIC_UID socket=0600 peer_pid=$pid peer_uid=$uid floor=$floor port=$PORT; hostile same-uid substitution remains"
+    else
+        line P10 tester-socket-squat unnamed "boundary=failed reason=$why path=$TESTER_PATH MainPID=${CON_PID:-none}; hostile same-uid substitution remains"
+    fi
+}
+
+check_p11() {
+    local en before
+    en="$(systemctl is-enabled mosaic-hostcheck.service 2>/dev/null)"
+    before="$(prop "$(unit_show mosaic-hostcheck.service Before)" Before)"
+    if [ "$en" = enabled ] && grep -qxF -- "$BUS_UNIT" <<< "${before// /$'\n'}"; then
+        line P11 hostcheck-before-bus closed "mosaic-hostcheck.service is enabled, and its Before= names $BUS_UNIT"
+    else
+        line P11 hostcheck-before-bus unnamed "mosaic-hostcheck.service is '${en:-unknown}', Before='$before'; it needs enabled and $BUS_UNIT"
+    fi
+}
+
+check_f1
+check_f2
+F5_LINE=()
+check_f3_f5
+check_f4
+"${F5_LINE[0]}" F5 bwrap-label "${F5_LINE[@]:1}"
+check_f6
+check_f7
+check_f8
+check_f9
+check_f10
+check_f11
+check_p1; check_p2; check_p3; check_p4; check_p5; check_p6
+check_p7; check_p8; check_p9; check_p10; check_p11
+
+for m in "${MARKS[@]}"; do echo "count $m ${COUNT[$m]:-0}"; done
+if [ "$F_FAILED" = 0 ]; then echo "case1-accept: every F check passes; send the whole output to Duckworth, and each unnamed line to Mos"; exit 0; fi
+echo "case1-accept: an F check failed, so the row fails"
+exit 1
@@ -0,0 +1,580 @@
+#!/usr/bin/env bash
+# Row 195 (#1693): the Case 1 acceptance on 10.1.1.53, design r7 section 5
+# (agents/darkwing/work/queue-195/DESIGN.md). Deviations and decisions: agents/darkwing/work/queue-195/BUILD.md.
+#
+#   case1-accept.sh --business ID --args FILE --claude-pin PIN --node-pin vN.N.N
+#
+# Root runs it on the Case 1 host after the install window, from a root-owned checkout. It reads the
+# user, home, copy, node, claude, main port and tester socket marker from the args file, which must pass stack-upgrade.sh's
+# rules and be a factory file for --business. Every command that runs the stack's code runs as
+# `sudo -u USER -H env PATH=<node dir>:/usr/local/bin:/usr/bin:/bin` from /. Root itself reads ss,
+# /proc, the account database and file metadata, and runs these: systemctl show and is-enabled (F1,
+# P11), curl on the Console's loopback healthz (F2), sudo -l (P1, P3), sudo -u jarvis bwrap --version
+# and hostcheck.sh --check (P9), and node to parse managed-settings.json (F9). F9 runs node only when
+# --node is the pinned path and it and every directory above it are root's with no group or other
+# write. The script changes nothing on the host but the message F3 sends and its reply, and it never
+# opens claude-session.env. A bounded config/target query imports the copy only as the stack
+# user, with sudo and an empty environment. Root parses its two facts in bash. P10 uses the
+# fixed system Python, also as the stack user, for a read-only SO_PEERCRED observation.
+#
+# One line per check, `<id> <path> <mark> <evidence>`, then `count <mark> N` for each mark and a
+# result line. F checks are `pass` or `FAIL`. P checks are `closed`, `accepted <ruling>` or
+# `unnamed`, which means no Q182, Q183 or Mos ruling names the path; each unnamed line goes to Mos.
+#
+# Exit 0 when every F check passes, 1 when one fails, 2 on usage or a refusal (a bad args file, or
+# --root misused). A P check never changes the exit.
+#
+# Test seam, for packages/cli/tests/case1-accept.test.mjs only. Root takes none:
+#   --root DIR   prefixes the args file, /etc, /proc, the stack's home, the host check and node, and
+#                reads the account database from DIR/etc/passwd and DIR/etc/group instead of getent
+set -uo pipefail
+
+usage() { echo "usage: case1-accept.sh --business ID --args FILE --claude-pin PIN --node-pin vN.N.N" >&2; exit 2; }
+refuse() { echo "case1-accept: refusing: $*" >&2; exit 2; }
+BUSINESS="" ARGS_FILE="" CLAUDE_PIN="" NODE_PIN="" ROOT=""
+while [ $# -gt 0 ]; do
+    case "$1" in
+        --business) [ $# -ge 2 ] && [[ "$2" =~ ^[a-z0-9][a-z0-9-]*$ ]] || usage; BUSINESS="$2"; shift 2 ;;
+        --args) [ $# -ge 2 ] && [[ "$2" =~ ^/[A-Za-z0-9/._+-]+$ ]] || usage; ARGS_FILE="$2"; shift 2 ;;
+        --claude-pin) [ $# -ge 2 ] && [[ "$2" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]] || usage; CLAUDE_PIN="$2"; shift 2 ;;
+        --node-pin) [ $# -ge 2 ] && [[ "$2" =~ ^v[0-9]+\.[0-9]+\.[0-9]+$ ]] || usage; NODE_PIN="$2"; shift 2 ;;
+        --root) [ $# -ge 2 ] && [[ "$2" =~ ^/[A-Za-z0-9/._+-]+$ ]] && [ -d "$2" ] || usage; ROOT="${2%/}"; shift 2 ;;
+        *) usage ;;
+    esac
+done
+[ -n "$BUSINESS" ] && [ -n "$ARGS_FILE" ] && [ -n "$CLAUDE_PIN" ] && [ -n "$NODE_PIN" ] || usage
+if [ "$(id -u)" = 0 ]; then
+    [ -z "$ROOT" ] || refuse "--root is a test seam, and root takes none"
+    PATH=/usr/sbin:/usr/bin:/sbin:/bin
+else
+    [ -n "$ROOT" ] || refuse "run it as root"
+fi
+cd / || refuse "cannot cd to /"
+
+# --- The args file, by stack-upgrade.sh's read_args rules, plus the serve ports ---
+
+f="$ROOT$ARGS_FILE"
+[ -f "$f" ] && [ ! -L "$f" ] || refuse "no regular file $ARGS_FILE"
+st="$(stat -c '%u %a' -- "$f")" || refuse "cannot stat $ARGS_FILE"
+[ "${st% *}" = "$(id -u)" ] && (( (8#${st#* } & 8#022) == 0 )) ||
+    refuse "$ARGS_FILE must be $(id -un)'s with no group or other write (it is uid ${st% *}, mode ${st#* })"
+mapfile -t ARGS < "$f" || refuse "cannot read $ARGS_FILE"
+S_USER="" S_HOME="" A_BUSINESS="" NODE="" COPY_ID="" CLAUDE="" PROFILE="" PORT="" TESTER_SOCKET=0
+copies=0 past=""
+for ((i = 0; i < ${#ARGS[@]}; i++)); do
+    a="${ARGS[i]}" v="${ARGS[i + 1]:-}"
+    if [ -n "$past" ]; then
+        case "$a" in
+            --port) PORT="$v"; i=$((i + 1)) ;;
+            --business) [ "$v" = "$BUSINESS" ] || refuse "serve business differs"; i=$((i + 1)) ;;
+            --tester-socket) TESTER_SOCKET=$((TESTER_SOCKET + 1)) ;;
+            --tester-port) refuse "case1-accept.sh retires tester TCP; use --tester-socket" ;;
+            *) refuse "unknown serve flag $a" ;;
+        esac
+        continue
+    fi
+    case "$a" in
+        --) past=1 ;;
+        --pm) ;;
+        --user) S_USER="$v"; i=$((i + 1)) ;;
+        --home) S_HOME="$v"; i=$((i + 1)) ;;
+        --business) A_BUSINESS="$v"; i=$((i + 1)) ;;
+        --node) NODE="$v"; i=$((i + 1)) ;;
+        --claude) CLAUDE="$v"; i=$((i + 1)) ;;
+        --profile) PROFILE="$v"; i=$((i + 1)) ;;
+        --copy) COPY_ID="$v"; copies=$((copies + 1)); i=$((i + 1)) ;;
+        *) refuse "$ARGS_FILE has $a before --, which case2-unit.sh does not take" ;;
+    esac
+done
+[ "$copies" = 1 ] || refuse "$ARGS_FILE needs exactly one --copy before --, not $copies"
+[[ "$S_USER" =~ ^[a-z_][a-z0-9_-]*$ ]] && [[ "$S_HOME" =~ ^/[A-Za-z0-9/._+-]+$ ]] && [[ "$A_BUSINESS" =~ ^[a-z0-9][a-z0-9-]*$ ]] &&
+    [[ "$NODE" =~ ^/[A-Za-z0-9/._+-]+$ ]] && [[ "$COPY_ID" =~ ^[0-9a-f]{40}$ ]] && [[ "$CLAUDE" =~ ^/[A-Za-z0-9/._+@-]+$ ]] ||
+    refuse "$ARGS_FILE lacks a plain --user, --home, --business, --node, --claude or --copy"
+[ "$PROFILE" = factory ] || refuse "$ARGS_FILE has --profile '${PROFILE}', not factory"
+[ "$A_BUSINESS" = "$BUSINESS" ] || refuse "$ARGS_FILE is for business $A_BUSINESS, not $BUSINESS"
+[[ "$PORT" =~ ^[1-9][0-9]{0,3}$ ]] && [ "$PORT" -le 1023 ] || refuse "$ARGS_FILE lacks a privileged numeric --port after --"
+[ "$TESTER_SOCKET" = 1 ] || refuse "$ARGS_FILE needs one bare --tester-socket after --"
+
+COPY="$S_HOME/.local/share/mosaic-stack/copies/$COPY_ID"
+DATA_ROOT="$S_HOME/.mosaic-dev"
+CRED="$S_HOME/.config/mosaic-dev/secrets/claude-session.env"
+BUSINESS_FILE="$S_HOME/.config/mosaic-dev/businesses/$BUSINESS.json"
+BUS_UNIT="mosaic-bus@$BUSINESS.service" CON_UNIT=mosaic-webui.service
+HOSTCHECK=/usr/local/lib/mosaic-stack/hostcheck.sh
+SETTINGS=/etc/claude-code/managed-settings.json
+LABEL_OUTER='bwrap (enforce)' LABEL_CHILD='bwrap//&unpriv_bwrap (enforce)'
+AS_USER=(sudo -u "$S_USER" -H env "PATH=$(dirname "$NODE"):/usr/local/bin:/usr/bin:/bin")
+WORK="$(mktemp -d)" || refuse "cannot make a temp dir"
+trap 'rm -rf -- "$WORK"' EXIT
+
+# Row253: bounded unprivileged metadata, parsed by root without running copy code.
+tester_capture() (
+    local seconds="$1" maximum="$2" file child="" rc=0; shift 2
+    file="$(mktemp)" || exit 1
+    trap 'if [ -n "$child" ]; then kill -KILL -- "-$child" 2>/dev/null || :; wait "$child" 2>/dev/null || :; fi; rm -f -- "$file"' EXIT
+    trap 'exit 1' HUP INT TERM
+    timeout --signal=KILL "${seconds}s" /bin/bash -c 'set -o pipefail; maximum="$1"; shift; "$@" | head -c "$((maximum + 1))"' -- "$maximum" "$@" > "$file" 2>/dev/null &
+    child=$!
+    wait "$child" 2>/dev/null || rc=$?
+    kill -KILL -- "-$child" 2>/dev/null || :
+    [ "$rc" = 0 ] && [ "$(wc -c < "$file")" -le "$maximum" ] || exit 1
+    cat -- "$file"
+)
+TESTER_QUERY='import {readFileSync} from "node:fs";import {pathToFileURL} from "node:url";const m=await import(pathToFileURL(process.argv[1]).href);const s=m.loadSystem();console.log(JSON.stringify({dataRoot:s.dataRoot,socket:readFileSync(process.argv[2],"utf8").includes("MOSAIC_TESTER_SOCKET_V1")}));'
+tester_facts() {
+    local LC_ALL=C pattern='^\{"dataRoot":"([A-Za-z0-9/._@+-]+)","socket":(true|false)\}$'
+    [[ "$1" =~ $pattern ]] || return 1
+    TS_DATA="${BASH_REMATCH[1]}" TS_MARKED="${BASH_REMATCH[2]}"
+}
+tester_location() {
+    local LC_ALL=C data="$1" home="$2" uid="$3" prefix="$4" part at="" st
+    TS_REASON="" TS_SOCKET=""
+    case "$data" in /*) ;; *) TS_REASON=not-absolute; return 1 ;; esac
+    case "$data" in *[!A-Za-z0-9/._@+-]*) TS_REASON=not-ascii; return 1 ;; esac
+    case "$data/" in */./*|*/../*|*//* ) TS_REASON=not-normalized; return 1 ;; esac
+    [ "${data%/}" = "$data" ] || { TS_REASON=not-normalized; return 1; }
+    case "$data" in "$home"/*) ;; *) TS_REASON=outside-home; return 1 ;; esac
+    case "$home/" in /home/*|/root/*|/run/user/*|/tmp/*|/var/tmp/*) TS_REASON=protected-private-home; return 1 ;; esac
+    TS_SOCKET="$data/console/tester.sock"
+    [ "${#TS_SOCKET}" -le 107 ] || { TS_REASON=too-long; return 1; }
+    local -a parts
+    IFS=/ read -r -a parts <<< "$data"
+    for part in "${parts[@]}"; do
+        [ -n "$part" ] || continue
+        at="$at/$part"
+        [ ! -L "$prefix$at" ] || { TS_REASON=symlink-component; return 1; }
+        if [ -e "$prefix$at" ]; then
+            [ -d "$prefix$at" ] || { TS_REASON=component-type; return 1; }
+        fi
+    done
+    [ "${5:-}" != observe ] || return 0
+    local parent="$prefix$data/console"
+    [ ! -L "$parent" ] || { TS_REASON=symlink-parent; return 1; }
+    if [ -e "$parent" ]; then
+        [ -d "$parent" ] || { TS_REASON=parent-type; return 1; }
+        st="$(stat -c '%u %a' -- "$parent")" || { TS_REASON=parent-stat; return 1; }
+        [ "${st% *}" = "$uid" ] || { TS_REASON=parent-owner; return 1; }
+        [[ "${st#* }" =~ ^[0-7]{3,4}$ ]] && (( (8#${st#* } & 8#077) == 0 )) || { TS_REASON=parent-mode; return 1; }
+    fi
+}
+# tester-location-end
+
+
+# --- Output ---
+
+MARKS=(pass FAIL closed "accepted Q182+Q183" "accepted Q183" "accepted mos-1096" unnamed)
+declare -A COUNT=()
+F_FAILED=0
+# Text the stack's user wrote, made safe to print: printable ASCII, one line, at most 200 bytes.
+clean() { tr -c '[:print:]' ' ' <<< "$1" | cut -c1-200 | sed 's/ *$//'; }
+line() { local id="$1" path="$2" mark="$3"; shift 3; echo "$id $path $mark $*"; COUNT[$mark]=$(( ${COUNT[$mark]:-0} + 1 )); }
+fpass() { line "$1" "$2" pass "${@:3}"; }
+ffail() { line "$1" "$2" FAIL "${@:3}"; F_FAILED=1; }
+
+# --- The account database: getent on the host, the seam's files under --root ---
+
+db() {
+    if [ -n "$ROOT" ]; then
+        if [ $# -gt 1 ]; then awk -F: -v k="$2" '$1 == k' "$ROOT/etc/$1"; else cat "$ROOT/etc/$1"; fi
+    else
+        getent "$@"
+    fi
+}
+uid_of() { db passwd "$1" | cut -d: -f3; }
+gid_of() { db passwd "$1" | cut -d: -f4; }
+# The group ids USER belongs to, as `id -G USER` prints them: the primary gid, then each group
+# whose member list names USER.
+groups_of() {
+    local g; g="$(gid_of "$1")"
+    [ -n "$g" ] || return 0
+    { echo "$g"; db group | awk -F: -v u="$1" '{ n = split($4, m, ","); for (i = 1; i <= n; i++) if (m[i] == u) print $3 }'; } | awk '!seen[$0]++'
+}
+names_of_groups() { local g; for g in "$@"; do db group | awk -F: -v g="$g" '$3 == g { print $1 }'; done; }
+MOSAIC_UID="$(uid_of "$S_USER")"
+[[ "$MOSAIC_UID" =~ ^[1-9][0-9]*$ ]] || refuse "stack account has no non-root uid"
+[ "$(db passwd "$S_USER" | cut -d: -f6)" = "$S_HOME" ] || refuse "saved home differs from account home"
+QUERY="$(tester_capture 5 4096 sudo -u "$S_USER" -H env -i "HOME=$S_HOME" "PATH=$(dirname "$NODE"):/usr/local/bin:/usr/bin:/bin" "$NODE" --input-type=module -e "$TESTER_QUERY" "$COPY/packages/cli/src/config.mjs" "$COPY/packages/webui/src/cli.mjs")" || refuse "tester config query failed"
+tester_facts "$QUERY" || refuse "tester config query has invalid facts"
+[ "$TS_MARKED" = true ] || refuse "target does not support --tester-socket"
+tester_location "$TS_DATA" "$S_HOME" "$MOSAIC_UID" "$ROOT" observe || refuse "tester path refuses $TS_REASON"
+TESTER_PATH="$TS_SOCKET"
+
+# --- systemd, /proc and listeners ---
+
+# KEY=VALUE lines for UNIT's properties.
+unit_show() { local u="$1"; shift; systemctl show "$u" "${@/#/-p}" 2>/dev/null; }
+prop() { sed -n "s/^$2=//p" <<< "$1" | tail -n 1; }
+# The real, effective, saved and filesystem uids of PID, space-separated.
+proc_uids() { awk '$1 == "Uid:" { print $2, $3, $4, $5 }' "$ROOT/proc/$1/status" 2>/dev/null; }
+proc_label() { local l; l="$(cat "$ROOT/proc/$1/attr/current" 2>/dev/null)" || return 1; printf '%s' "${l%$'\n'}"; }
+# One `ADDRESS PIDS` line per TCP listener on port $1, PIDS comma-separated.
+listeners() {
+    ss -Hltnp 2>/dev/null | awk -v p="$1" '{
+        n = split($4, a, ":"); if (a[n] != p) next
+        addr = substr($4, 1, length($4) - length(p) - 1); pids = ""; s = $0
+        while (match(s, /pid=[0-9]+/)) { pids = pids (pids == "" ? "" : ",") substr(s, RSTART + 4, RLENGTH - 4); s = substr(s, RSTART + RLENGTH) }
+        print addr, pids
+    }'
+}
+# 0 when port $1 has a listener and every one is on 127.0.0.1, held by pid $2 alone.
+loopback_by() {
+    local addr pids p any=0
+    [ -n "$2" ] && [ "$2" != 0 ] || return 1
+    while read -r addr pids; do
+        [ -n "$addr" ] || continue
+        any=1
+        [ "$addr" = 127.0.0.1 ] || return 1
+        for p in ${pids//,/ }; do [ "$p" = "$2" ] || return 1; done
+        [ -n "$pids" ] || return 1
+    done <<< "$(listeners "$1")"
+    [ "$any" = 1 ]
+}
+listener_text() { local t; t="$(listeners "$1" | tr '\n' ';')"; echo "${t:-none}"; }
+
+BUS_SHOW="$(unit_show "$BUS_UNIT" ActiveState User MainPID)"
+CON_SHOW="$(unit_show "$CON_UNIT" ActiveState User MainPID)"
+CON_PID="$(prop "$CON_SHOW" MainPID)"
+
+# --- F checks ---
+
+check_f1() {
+    local u show state user pid uids why=""
+    for u in "$BUS_UNIT" "$CON_UNIT"; do
+        if [ "$u" = "$BUS_UNIT" ]; then show="$BUS_SHOW"; else show="$CON_SHOW"; fi
+        state="$(prop "$show" ActiveState)" user="$(prop "$show" User)" pid="$(prop "$show" MainPID)"
+        uids="$(proc_uids "${pid:-0}")"
+        [ "$state" = active ] || { why+="$u is ${state:-unknown}; "; continue; }
+        [ "$user" = "$S_USER" ] || { why+="$u has User=${user:-unset}; "; continue; }
+        [ -n "$MOSAIC_UID" ] && [ "$uids" = "$MOSAIC_UID $MOSAIC_UID $MOSAIC_UID $MOSAIC_UID" ] ||
+            why+="$u MainPID ${pid:-none} has uids '${uids:-unreadable}', not $S_USER's ${MOSAIC_UID:-unknown}; "
+    done
+    if [ -z "$why" ]; then fpass F1 units-user "$BUS_UNIT and $CON_UNIT are active as $S_USER (uid $MOSAIC_UID)"
+    else ffail F1 units-user "${why%; }"; fi
+}
+
+check_f2() {
+    local rc=0
+    curl -fsS --max-time 10 -o /dev/null "http://127.0.0.1:$PORT/healthz" 2>/dev/null || rc=$?
+    if [ "$rc" != 0 ]; then ffail F2 console-loopback "curl http://127.0.0.1:$PORT/healthz exited $rc"
+    elif ! loopback_by "$PORT" "$CON_PID"; then ffail F2 console-loopback "port $PORT listeners are '$(listener_text "$PORT")', not 127.0.0.1 by the Console's MainPID ${CON_PID:-none}"
+    else fpass F2 console-loopback "healthz answers, and $PORT is bound to 127.0.0.1 only, by MainPID $CON_PID"; fi
+}
+
+# F5's scan: an outer /usr/bin/bwrap owned by the stack's user with a claude descendant. Sets F5_OK
+# when one pair has both labels exactly, F5_WHY to the last mismatch otherwise.
+F5_OK="" F5_WHY="no /usr/bin/bwrap process of $S_USER with a claude descendant was seen while the reply was pending"
+scan_f5() {
+    local pid ppid uids kids q c argv0 comm lo lc
+    local -A parent=() children=() bw=()
+    # One read of every PPid line and one of every exe link, so a scan stays short on a busy host.
+    while read -r pid ppid; do
+        parent[$pid]="$ppid" children[$ppid]+=" $pid"
+    done < <(grep -H '^PPid:' "$ROOT"/proc/[0-9]*/status 2>/dev/null | sed -n 's#^.*/proc/\([0-9]*\)/status:PPid:[[:space:]]*\([0-9]*\)$#\1 \2#p')
+    while read -r pid; do
+        [[ "$pid" =~ ^[0-9]+$ ]] && [ -n "${parent[$pid]:-}" ] && bw[$pid]=1
+    done < <(find "$ROOT/proc" -mindepth 2 -maxdepth 2 -name exe -lname /usr/bin/bwrap -printf '%h\n' 2>/dev/null | sed 's#.*/##')
+    for pid in "${!bw[@]}"; do
+        [ -z "${bw[${parent[$pid]}]:-}" ] || continue
+        uids="$(proc_uids "$pid")"
+        [ -n "$MOSAIC_UID" ] && [ "${uids%% *}" = "$MOSAIC_UID" ] || continue
+        # Every descendant, breadth first.
+        kids=() q=("$pid")
+        while [ ${#q[@]} -gt 0 ]; do
+            for c in ${children[${q[0]}]:-}; do kids+=("$c") q+=("$c"); done
+            q=("${q[@]:1}")
+        done
+        for c in "${kids[@]}"; do
+            argv0="$(tr '\0' '\n' < "$ROOT/proc/$c/cmdline" 2>/dev/null | sed -n 1p)"
+            comm="$(cat "$ROOT/proc/$c/comm" 2>/dev/null)"
+            [[ "${argv0##*/}" == claude* ]] || [[ "$comm" == claude* ]] || continue
+            lo="$(proc_label "$pid")" lc="$(proc_label "$c")"
+            if [ "$lo" = "$LABEL_OUTER" ] && [ "$lc" = "$LABEL_CHILD" ]; then
+                F5_OK="bwrap $pid reads '$lo' and its claude descendant $c reads '$lc'"; return 0
+            fi
+            F5_WHY="bwrap $pid reads '$lo' and its claude descendant $c reads '$lc', not '$LABEL_OUTER' and '$LABEL_CHILD'"
+        done
+    done
+    return 1
+}
+
+# F3 and F5 together: the message goes out in the background and the scan runs until it is answered.
+check_f3_f5() {
+    local marker text rc=0 out err n tpid
+    marker="case1-accept-$(od -An -N6 -tx1 /dev/urandom | tr -d ' \n')"
+    text="$marker: this is the Case 1 acceptance; reply with one short line."
+    timeout 330 "${AS_USER[@]}" "$COPY/scripts/mosaic" talk chief "$text" --business "$BUSINESS" --tester --wait 300 > "$WORK/talk.out" 2> "$WORK/talk.err" &
+    tpid=$!
+    while :; do
+        scan_f5 && break
+        kill -0 "$tpid" 2>/dev/null || break
+        sleep 0.5
+    done
+    wait "$tpid" || rc=$?
+    # Both the sent line and the reply are on stdout; an error is on stderr.
+    out="$(cat "$WORK/talk.out")" err="$(cat "$WORK/talk.err")"
+    n="$(grep -c . <<< "$out")"
+    if [ "$rc" = 0 ] && grep -q "^sent [^ ]* to chief" <<< "$out" && [ "$n" -ge 2 ]; then
+        fpass F3 tester-reply "chief replied to $marker"
+    else
+        ffail F3 tester-reply "talk exited $rc with $n lines on stdout; last: $(clean "$(tail -n 1 <<< "${err:-$out}")")"
+    fi
+    if [ -n "$F5_OK" ]; then F5_LINE=(fpass "$F5_OK"); else F5_LINE=(ffail "$F5_WHY"); fi
+}
+
+check_f4() {
+    local rc=0 out
+    out="$("${AS_USER[@]}" "$COPY/scripts/case2-precheck.sh" --business "$BUSINESS" --profile factory 2>&1)" || rc=$?
+    if [ "$rc" = 0 ]; then fpass F4 precheck "case2-precheck.sh --profile factory exits 0"
+    else ffail F4 precheck "case2-precheck.sh --profile factory exited $rc; last: $(clean "$(tail -n 1 <<< "$out")")"; fi
+}
+
+check_f6() {
+    local want="/opt/mosaic-stack/claude-$CLAUDE_PIN/" v
+    [[ "$CLAUDE" == "$want"* ]] || { ffail F6 claude-pin "--claude $CLAUDE is not under $want"; return; }
+    [[ "$CLAUDE/" != */../* ]] || { ffail F6 claude-pin "--claude $CLAUDE has a .. segment"; return; }
+    v="$("${AS_USER[@]}" "$CLAUDE" --version 2>/dev/null | sed -n 1p)"
+    if [ "$v" = "$CLAUDE_PIN (Claude Code)" ]; then fpass F6 claude-pin "$CLAUDE prints '$v'"
+    else ffail F6 claude-pin "$CLAUDE --version prints '$(clean "$v")', not '$CLAUDE_PIN (Claude Code)'"; fi
+}
+
+# The PM check confirm runs (stack-release.sh pm_external): exactly one live launches list entry for
+# launch.by, for this business. The stack's user runs the whole check and prints one result line.
+F7_JS='
+const {readFileSync}=require("node:fs");const {spawnSync}=require("node:child_process");
+const [file,cli,b]=process.argv.slice(1);
+let by;
+try{by=JSON.parse(readFileSync(file,"utf8")).launch?.by}catch(e){console.log(`fail cannot read ${file}: ${e.code??"not JSON"}`);process.exit(0)}
+if(typeof by!=="string"||!by){console.log("fail the business file has no launch.by");process.exit(0)}
+const r=spawnSync(cli,["launches","list","--json"],{encoding:"utf8"});
+if(r.status!==0){console.log(`fail launches list exited ${r.status}`);process.exit(0)}
+let l;try{l=JSON.parse(r.stdout)}catch{console.log("fail launches list printed no JSON");process.exit(0)}
+const live=Array.isArray(l)?l.filter((x)=>x&&x.instance===by&&x.live===true):[];
+console.log(live.length!==1?`fail ${live.length} live launches of ${by}`:live[0].business!==b?`fail the live launch of ${by} is for ${live[0].business}`:`ok ${by} run ${live[0].run}`);'
+check_f7() {
+    local out
+    out="$("${AS_USER[@]}" "$NODE" -e "$F7_JS" -- "$BUSINESS_FILE" "$COPY/scripts/mosaic" "$BUSINESS" 2>/dev/null | sed -n 1p)"
+    if [[ "$out" =~ ^ok\ [a-z0-9][a-z0-9-]*\ run\ [A-Za-z0-9._-]+$ ]]; then fpass F7 pm-live "one live launch: ${out#ok }"
+    else ffail F7 pm-live "$(clean "${out#fail }")"; fi
+}
+
+check_f8() {
+    local s
+    s="$(stat -c '%U %a %F' -- "$ROOT$CRED" 2>/dev/null)" || s="missing"
+    if [ ! -L "$ROOT$CRED" ] && [ "$s" = "$S_USER 600 regular file" ]; then fpass F8 credential-file "$CRED is '$s'"
+    else ffail F8 credential-file "$CRED is '$s', not '$S_USER 600 regular file'"; fi
+}
+
+# Empty when $1 and every directory above it, up to /, are the running user's (root's on the host) with
+# no group or other write: case2-unit.sh's root_only rule for --node, checked again before root runs it.
+# Otherwise the first path that breaks the rule. A symlink breaks it, because its mode is 777.
+not_root_only() {
+    local p="$1" st
+    while :; do
+        st="$(stat -c '%u %a' -- "$ROOT$p" 2>/dev/null)" || { echo "$p (cannot stat)"; return; }
+        [ "${st% *}" = "$(id -u)" ] && (( (8#${st#* } & 8#022) == 0 )) || { echo "$p (uid ${st% *}, mode ${st#* })"; return; }
+        [ "$p" = / ] && return
+        p="$(dirname -- "$p")"
+    done
+}
+
+check_f9() {
+    local s v bad
+    s="$(stat -c '%U:%G %a %F' -- "$ROOT$SETTINGS" 2>/dev/null)" || s="missing"
+    [ ! -L "$ROOT$SETTINGS" ] && [ "$s" = "root:root 644 regular file" ] || { ffail F9 autoupdater-off "$SETTINGS is '$s', not 'root:root 644 regular file'"; return; }
+    # Root runs node here, so it runs only the pinned path, and only when nothing but root can replace it.
+    [ "$NODE" = "/opt/mosaic-stack/node-$NODE_PIN/bin/node" ] || { ffail F9 autoupdater-off "root won't run --node $NODE: it is not the --node-pin path"; return; }
+    bad="$(not_root_only "$NODE")"
+    [ -z "$bad" ] || { ffail F9 autoupdater-off "root won't run --node $NODE: $bad is not root's alone"; return; }
+    v="$("$ROOT$NODE" -e 'const s=JSON.parse(require("node:fs").readFileSync(process.argv[1],"utf8"));process.stdout.write(JSON.stringify(s?.env?.DISABLE_AUTOUPDATER??null))' -- "$ROOT$SETTINGS" 2>/dev/null)" || v="unreadable"
+    if [ "$v" = '"1"' ]; then fpass F9 autoupdater-off "$SETTINGS is root:root 0644 with env.DISABLE_AUTOUPDATER \"1\""
+    else ffail F9 autoupdater-off "$SETTINGS env.DISABLE_AUTOUPDATER is $v, not \"1\""; fi
+}
+
+check_f10() {
+    local want="/opt/mosaic-stack/node-$NODE_PIN/bin/node" v
+    [ "$NODE" = "$want" ] || { ffail F10 node-pin "--node $NODE is not $want"; return; }
+    v="$("${AS_USER[@]}" "$NODE" --version 2>/dev/null | sed -n 1p)"
+    if [ "$v" = "$NODE_PIN" ]; then fpass F10 node-pin "$NODE prints $v"
+    else ffail F10 node-pin "$NODE --version prints '$(clean "$v")', not $NODE_PIN"; fi
+}
+
+check_f11() {
+    local d="$ROOT$DATA_ROOT/discord" found
+    if [ -L "$d" ]; then ffail F11 no-discord "$DATA_ROOT/discord is a symlink"; return; fi
+    [ -d "$d" ] || { fpass F11 no-discord "$DATA_ROOT/discord is absent"; return; }
+    found="$(find "$d" -maxdepth 1 -name '*.json' -printf '%f ' 2>/dev/null)"
+    if [ -z "$found" ]; then fpass F11 no-discord "$DATA_ROOT/discord holds no binding"
+    else ffail F11 no-discord "$DATA_ROOT/discord holds bindings: ${found% }"; fi
+}
+
+# --- P checks ---
+
+check_p1() {
+    local out
+    out="$(sudo -l -U "$S_USER" 2>&1)"
+    if grep -q "is not allowed to run sudo" <<< "$out"; then line P1 "$S_USER-sudo" closed "sudo -l: $(clean "$(sed -n 1p <<< "$out")")"
+    else line P1 "$S_USER-sudo" unnamed "sudo -l: $(clean "$(tr '\n' ' ' <<< "$out")")"; fi
+}
+
+check_p2() {
+    local gs keys="$ROOT$S_HOME/.ssh/authorized_keys" kstate n
+    gs="$(groups_of "$S_USER" | tr '\n' ' ')"; gs="${gs% }"
+    n="$(wc -w <<< "$gs")"
+    if [ ! -e "$keys" ] && [ ! -L "$keys" ]; then kstate=absent
+    elif [ -f "$keys" ] && [ ! -L "$keys" ] && [ ! -s "$keys" ]; then kstate=empty
+    else kstate=present; fi
+    if [ "$n" = 1 ] && [ "$kstate" != present ]; then line P2 "$S_USER-groups-keys" closed "id -G is '$gs'; authorized_keys is $kstate"
+    else line P2 "$S_USER-groups-keys" unnamed "id -G is '$gs'; authorized_keys is $kstate"; fi
+}
+
+check_p3() {
+    local n
+    n="$(sudo -l -U localadmin 2>&1 | grep -c NOPASSWD)"
+    line P3 localadmin-sudo "accepted Q183" "sudo -l -U localadmin lists $n NOPASSWD lines"
+}
+
+check_p4() { line P4 pve-root-pbs "accepted Q182+Q183" "root on pve over VM 1008, and PBS backups that hold $S_HOME with the credential; this script can't see pve"; }
+
+check_p5() {
+    local gs reach
+    if [ -z "$(uid_of jarvis)" ]; then line P5 jarvis-reach closed "no jarvis account"; return; fi
+    gs="$(names_of_groups $(groups_of jarvis) | tr '\n' ' ')"
+    reach="$(tr ' ' '\n' <<< "$gs" | grep -xE 'sudo|docker|lxd' | tr '\n' ' ')"
+    if [ -z "$reach" ]; then line P5 jarvis-reach closed "jarvis is in none of sudo, docker and lxd (groups: ${gs% })"
+    else line P5 jarvis-reach unnamed "jarvis is in ${reach% }"; fi
+}
+
+check_p6() {
+    local g m members bad=0
+    for g in sudo docker lxd; do
+        members="$(db group "$g" | cut -d: -f4)"
+        for m in ${members//,/ }; do
+            [ "$g" = sudo ] && [ "$m" = localadmin ] && continue
+            line P6 "group-$g" unnamed "$m is a member of $g"; bad=1
+        done
+    done
+    [ "$bad" = 1 ] || line P6 group-members closed "sudo holds only localadmin, and docker and lxd have no members"
+}
+
+check_p7() {
+    local found
+    found="$(grep -rlw -- "$S_USER" "$ROOT/etc/sudoers.d" 2>/dev/null | sed "s#^$ROOT##" | tr '\n' ' ')"
+    if [ -z "$found" ]; then line P7 sudoers-d closed "no file under /etc/sudoers.d names $S_USER"
+    else line P7 sudoers-d unnamed "files naming $S_USER: ${found% }"; fi
+}
+
+check_p8() {
+    local other
+    other="$(listeners 7331)$(listeners 7333)"
+    if loopback_by "$PORT" "$CON_PID" && [ -z "$other" ]; then
+        line P8 lan-listeners closed "$PORT is on 127.0.0.1 only by MainPID $CON_PID; no TCP listener on 7331 or 7333; tester uses $TESTER_PATH"
+    else
+        line P8 lan-listeners unnamed "$PORT: $(listener_text "$PORT"); 7333: $(listener_text 7333); 7331: $(listener_text 7331); Console MainPID ${CON_PID:-none}"
+    fi
+}
+
+check_p9() {
+    local out n missing=() rc=0 err mg others
+    out="$("$ROOT$HOSTCHECK" --check 2>/dev/null)"
+    for n in 1 2 3 4 5 6; do grep -q "^ok $n " <<< "$out" || missing+=("hostcheck item $n has no ok line")
+    done
+    err="$(sudo -u jarvis /usr/bin/bwrap --version 2>&1 >/dev/null)" || rc=$?
+    [ "$rc" != 0 ] && grep -q "Permission denied" <<< "$err" || missing+=("sudo -u jarvis /usr/bin/bwrap --version exited $rc without Permission denied")
+    mg="$(gid_of "$S_USER")"
+    [ -n "$mg" ] && [ -z "$(db group "$S_USER" | cut -d: -f4)" ] || missing+=("group $S_USER lists members, or $S_USER has no group")
+    others="$(db passwd | awk -F: -v g="$mg" -v u="$S_USER" '$4 == g && $1 != u { print $1 }' | tr '\n' ' ')"
+    [ -z "$others" ] || missing+=("other accounts have $S_USER's gid $mg: ${others% }")
+    if [ ${#missing[@]} = 0 ]; then
+        line P9 bwrap-userns "accepted mos-1096" "hostcheck items 1-6 ok, jarvis is denied bwrap, and group $S_USER has no other member"
+    else
+        for n in "${missing[@]}"; do line P9 bwrap-userns unnamed "$n"; done
+    fi
+}
+
+# P10 is an observation of mutable same-uid state, never a closure ruling.
+TESTER_PEER='import socket,struct,sys
+s=socket.socket(socket.AF_UNIX,socket.SOCK_STREAM)
+try:
+ s.settimeout(1)
+ s.connect(sys.argv[1])
+ p=struct.unpack("3i",s.getsockopt(socket.SOL_SOCKET,socket.SO_PEERCRED,12))
+ print(*p)
+finally:
+ s.close()'
+tester_snapshot() {
+    local parent="${TESTER_PATH%/*}" p s pid
+    [ ! -L "$ROOT$parent" ] && [ ! -L "$ROOT$TESTER_PATH" ] || return 1
+    p="$(stat -c '%u %a %F %d %i' -- "$ROOT$parent" 2>/dev/null)" || return 1
+    s="$(stat -c '%u %a %F %d %i' -- "$ROOT$TESTER_PATH" 2>/dev/null)" || return 1
+    [[ "$p" =~ ^$MOSAIC_UID\ 700\ directory\ [0-9]+\ [0-9]+$ ]] || return 1
+    [[ "$s" =~ ^$MOSAIC_UID\ 600\ socket\ [0-9]+\ [0-9]+$ ]] || return 1
+    pid="$(prop "$(unit_show "$CON_UNIT" MainPID)" MainPID)"
+    [[ "$pid" =~ ^[1-9][0-9]*$ ]] && [ "$pid" = "$CON_PID" ] || return 1
+    [ "$(proc_uids "$pid")" = "$MOSAIC_UID $MOSAIC_UID $MOSAIC_UID $MOSAIC_UID" ] || return 1
+    printf '%s|%s|%s' "$pid" "$p" "$s"
+}
+tester_python() {
+    local real bad magic
+    # Resolve the system entry, then validate the target and every ancestor.
+    [ -f "$ROOT/usr/bin/python3" ] && [ -x "$ROOT/usr/bin/python3" ] || return 1
+    real="$(realpath -e -- "$ROOT/usr/bin/python3" 2>/dev/null)" || return 1
+    [ -z "$ROOT" ] || real="${real#"$ROOT"}"
+    case "$real" in /home/*|/root/*|/run/user/*|"$S_HOME"/*) return 1 ;; esac
+    bad="$(not_root_only "$real")"; [ -z "$bad" ] || return 1
+    bad="$(not_root_only /usr/bin)"; [ -z "$bad" ] || return 1
+    magic="$(od -An -tx1 -N4 -- "$ROOT$real" 2>/dev/null | tr -d ' \n')"
+    [ "$magic" = 7f454c46 ] || return 1
+    printf '%s' "$real"
+}
+check_p10() {
+    local floor before after python peer pid uid gid why="" pattern='^([1-9][0-9]{0,9}) ([0-9]{1,10}) ([0-9]{1,10})$'
+    floor="$(cat "$ROOT/proc/sys/net/ipv4/ip_unprivileged_port_start" 2>/dev/null)"
+    [[ "$floor" =~ ^[0-9]{1,5}$ ]] && [ "$floor" -gt "$PORT" ] || why=floor
+    before="$(tester_snapshot)" || why=metadata
+    python="$(tester_python)" || why=interpreter
+    if [ -z "$why" ]; then
+        peer="$(tester_capture 3 128 sudo -u "$S_USER" -H env -i "HOME=$S_HOME" "PATH=$(dirname "$NODE"):/usr/local/bin:/usr/bin:/bin" "$python" -I -S -c "$TESTER_PEER" "$TESTER_PATH")" || why=probe
+        if [[ "$peer" =~ $pattern ]]; then
+            pid="${BASH_REMATCH[1]}" uid="${BASH_REMATCH[2]}" gid="${BASH_REMATCH[3]}"
+            [ "$pid" = "$CON_PID" ] && [ "$uid" = "$MOSAIC_UID" ] && [ "$gid" -le 2147483647 ] || why=peer
+        else why=probe; fi
+        after="$(tester_snapshot)" || why=metadata
+        [ "$before" = "$after" ] || why=changed
+    fi
+    if [ -z "$why" ]; then
+        line P10 tester-socket-squat unnamed "boundary=observed path=$TESTER_PATH parent=0700 owner=$MOSAIC_UID socket=0600 peer_pid=$pid peer_uid=$uid floor=$floor port=$PORT; hostile same-uid substitution remains"
+    else
+        line P10 tester-socket-squat unnamed "boundary=failed reason=$why path=$TESTER_PATH MainPID=${CON_PID:-none}; hostile same-uid substitution remains"
+    fi
+}
+
+check_p11() {
+    local en before
+    en="$(systemctl is-enabled mosaic-hostcheck.service 2>/dev/null)"
+    before="$(prop "$(unit_show mosaic-hostcheck.service Before)" Before)"
+    if [ "$en" = enabled ] && grep -qxF -- "$BUS_UNIT" <<< "${before// /$'\n'}"; then
+        line P11 hostcheck-before-bus closed "mosaic-hostcheck.service is enabled, and its Before= names $BUS_UNIT"
+    else
+        line P11 hostcheck-before-bus unnamed "mosaic-hostcheck.service is '${en:-unknown}', Before='$before'; it needs enabled and $BUS_UNIT"
+    fi
+}
+
+check_f1
+check_f2
+F5_LINE=()
+check_f3_f5
+check_f4
+"${F5_LINE[0]}" F5 bwrap-label "${F5_LINE[@]:1}"
+check_f6
+check_f7
+check_f8
+check_f9
+check_f10
+check_f11
+check_p1; check_p2; check_p3; check_p4; check_p5; check_p6
+check_p7; check_p8; check_p9; check_p10; check_p11
+
+for m in "${MARKS[@]}"; do echo "count $m ${COUNT[$m]:-0}"; done
+if [ "$F_FAILED" = 0 ]; then echo "case1-accept: every F check passes; send the whole output to Duckworth, and each unnamed line to Mos"; exit 0; fi
+echo "case1-accept: an F check failed, so the row fails"
+exit 1
@@ -0,0 +1,717 @@
+// Row 195 (#1693): scripts/case1-accept.sh, root's acceptance run on the Case 1 host. Design r7 section 5
+// (agents/darkwing/work/queue-195/DESIGN.md); deviations in agents/darkwing/work/queue-195/BUILD.md.
+// Every case runs the script with --root on a scratch host tree: /etc, /proc, /srv/mosaic, /opt and the
+// host check live under it. Fake systemctl, curl, ss, sudo and stat on PATH record their argv; the fake
+// sudo runs the stack's user's commands from the tree. Nothing here reads or writes the real /etc,
+// /proc or /srv, and the stand-in credential is not a credential.
+import { test } from "node:test";
+import assert from "node:assert/strict";
+import { spawnSync } from "node:child_process";
+import { chmodSync, existsSync, mkdirSync, readFileSync, renameSync, rmSync, symlinkSync, writeFileSync } from "node:fs";
+import { dirname, join } from "node:path";
+import { fileURLToPath } from "node:url";
+import { tmp } from "./helpers.mjs";
+import { CASE_SUDO_SESSION, recordedLivePids, killRecordedPids, fixtureGuard, cleanupFixture, pollFixtureGone, blockingQuerySource } from "./case-sudo-fixture.mjs";
+
+const REPO = fileURLToPath(new URL("../../../", import.meta.url));
+const SCRIPT = join(REPO, "scripts", "case1-accept.sh");
+const COPY = "0123456789abcdef0123456789abcdef01234567";
+const NODE_PIN = "v24.1.0", CLAUDE_PIN = "2.1.0";
+const NODE = `/opt/mosaic-stack/node-${NODE_PIN}/bin/node`;
+const CLAUDE = `/opt/mosaic-stack/claude-${CLAUDE_PIN}/node_modules/@anthropic-ai/claude-code/bin/claude.exe`;
+const HOME = "/srv/mosaic";
+const CLI = `${HOME}/.local/share/mosaic-stack/copies/${COPY}/scripts/mosaic`;
+const PRECHECK = `${HOME}/.local/share/mosaic-stack/copies/${COPY}/scripts/case2-precheck.sh`;
+const CRED = `${HOME}/.config/mosaic-dev/secrets/claude-session.env`;
+const CRED_VALUE = "stand-in-not-a-credential-7f3e2a";
+const AS_MOSAIC = `-u mosaic -H env PATH=/opt/mosaic-stack/node-${NODE_PIN}/bin:/usr/local/bin:/usr/bin:/bin`;
+const ARGS = ["--profile", "factory", "--user", "mosaic", "--home", HOME, "--business", "mosaic-stack", "--copy", COPY,
+  "--node", NODE, "--claude", CLAUDE, "--pm", "--", "--port", "732", "--business", "mosaic-stack", "--tester-socket"];
+const OUTER = "bwrap (enforce)", CHILD = "bwrap//&unpriv_bwrap (enforce)";
+const MARKS = ["pass", "FAIL", "closed", "accepted Q182+Q183", "accepted Q183", "accepted mos-1096", "unnamed"];
+const P_PASS = { P1: "closed", P2: "closed", P3: "accepted Q183", P4: "accepted Q182+Q183", P5: "closed", P6: "closed",
+  P7: "closed", P8: "closed", P9: "accepted mos-1096", P10: "unnamed", P11: "closed" };
+const PASSWD = "root:x:0:0:root:/root:/bin/bash\nmosaic:x:997:997::/srv/mosaic:/usr/sbin/nologin\nlocaladmin:x:1000:1000::/home/localadmin:/bin/bash\njarvis:x:1001:1001::/home/jarvis:/bin/bash\n";
+const GROUP = "root:x:0:\nsudo:x:27:localadmin\nmosaic:x:997:\nlxd:x:998:\ndocker:x:999:\nlocaladmin:x:1000:\njarvis:x:1001:\n";
+const SS = "LISTEN 0 511 127.0.0.1:732 0.0.0.0:* users:((\"node\",pid=200,fd=21))\n"
+  + "LISTEN 0 4096 0.0.0.0:22 0.0.0.0:* users:((\"sshd\",pid=900,fd=3))\n";
+const HOSTCHECK_OK = [1, 2, 3, 4, 5, 6, 7].map((n) => `ok ${n} item ${n} holds`).join("\n") + "\nnote bubblewrap 0.9.0 is the install pin\n";
+
+function put(file, text, mode) {
+  mkdirSync(dirname(file), { recursive: true });
+  writeFileSync(file, text);
+  if (mode) chmodSync(file, mode);
+}
+const edit = (file, f) => writeFileSync(file, f(readFileSync(file, "utf8")));
+const log = (name) => `printf '%s' ${JSON.stringify(name)} >> "$HC/calls.log"; printf ' %s' "$@" >> "$HC/calls.log"; echo >> "$HC/calls.log"`;
+
+// Fakes on PATH. Each records its argv and answers from a file in the state directory.
+const FAKES = {
+  systemctl: `case "$1" in
+  show) [ -f "$HC/show-$2" ] && cat "$HC/show-$2" ;;
+  is-enabled) cat "$HC/enabled-$2" 2>/dev/null || { echo disabled; exit 1; } ;;
+esac`,
+  curl: `exit "$(cat "$HC/curl-rc")"`,
+  ss: `cat "$HC/ss"`,
+  od: `if [ "$1" = -An ] && [ "$2" = -tx1 ] && [ "$3" = -N4 ]; then
+  [ -f "$HC/elf" ] && cat "$HC/elf" || echo 7f454c46
+else exec /usr/bin/od "$@"; fi`,
+  // The credential and the settings file answer from the state directory, as root would see them, and
+  // only those calls are recorded; everything else is the real stat, which reads the args file.
+  stat: `case "\${@: -1}" in
+  *claude-session.env) ${log("stat")}; cat "$HC/stat-cred" ;;
+  *console/tester.sock) cat "$HC/stat-socket" ;;
+  *console) [ "$2" = '%u %a %F %d %i' ] && cat "$HC/stat-parent" || echo "997 700" ;;
+  *managed-settings.json) ${log("stat")}; cat "$HC/stat-settings" ;;
+  *) exec /usr/bin/stat "$@" ;;
+esac`,
+  // -l -U USER prints the state file; -u jarvis is the bwrap probe; -u mosaic -H env PATH=... CMD runs
+  // CMD from the tree, with the PATH entries and each absolute argument that exists there moved under it.
+  sudo: `${CASE_SUDO_SESSION}
+case "$1" in
+  -l) [ -f "$HC/sudo-l-$3" ] && cat "$HC/sudo-l-$3"; exit 0 ;;
+  -u) ;;
+  *) exit 97 ;;
+esac
+user="$2"; shift 2
+if [ "$user" = jarvis ]; then cat "$HC/jarvis-bwrap" >&2; exit "$(cat "$HC/jarvis-bwrap-rc")"; fi
+[ "$user" = mosaic ] && [ "$1" = -H ] && [ "$2" = env ] || exit 98
+shift 2
+if [ "$1" = -i ]; then
+ [ "$2" = HOME=/srv/mosaic ] || exit 98
+ shift 2
+fi
+[[ "$1" == PATH=* ]] || exit 98
+p="\${1#PATH=}"; shift
+np=""; IFS=: read -ra parts <<< "$p"; for x in "\${parts[@]}"; do np+="$ROOT_DIR$x:"; done
+cmd="$1"; shift
+args=(); for a in "$@"; do if [[ "$a" == /* ]] && [ -e "$ROOT_DIR$a" ]; then args+=("$ROOT_DIR$a"); else args+=("$a"); fi; done
+export HOME="$ROOT_DIR/srv/mosaic" PATH="$np$PATH"
+[ ! -e "$ROOT_DIR$cmd" ] || cmd="$ROOT_DIR$cmd"
+case_sudo_run "$HC" "$cmd" "\${args[@]}"`,
+};
+
+// Executables inside the tree, run by the fake sudo or by the script itself. Node marks a run outside
+// the fake sudo, which sets HOME to the stack's home, so a test can tell whether root ran it.
+const NODE_STUB = `[ "$HOME" = "$ROOT_DIR/srv/mosaic" ] || touch "$HC/node-as-root"
+[ "\${1:-}" = --version ] && { cat "$HC/node-version"; exit 0; }
+exec "$REAL_NODE" "$@"`;
+// The real Python payload runs against a mock socket object, never an OS listener.
+const PYTHON_STUB = `[ -f "$HC/peer-output" ] && { cat "$HC/peer-output"; exit "$(cat "$HC/peer-status")"; }
+[ -f "$HC/peer-hang" ] && {
+ here="$BASHPID"; read -r sid < <(/bin/ps -o sid= -p "$here")
+ echo "$here" > "$HC/peer-pid"; printf '%s %s\\n' "$here" "$sid" >> "$HC/query-pids"
+ trap '' TERM HUP; exec sleep 60
+}
+if [ -f "$HC/peer-change" ]; then cat "$HC/peer-change" > "$HC/stat-socket"; fi
+if [ -f "$HC/peer-pid-change" ]; then cat "$HC/peer-pid-change" > "$HC/show-mosaic-webui.service"; fi
+exec /usr/bin/python3 -I -S -c '
+import os,socket,struct,sys
+class Fake:
+ def __init__(self,*a): assert a==(socket.AF_UNIX,socket.SOCK_STREAM)
+ def settimeout(self,n): assert n==1
+ def connect(self,p): assert p.endswith("/console/tester.sock")
+ def getsockopt(self,*a):
+  assert a==(socket.SOL_SOCKET,socket.SO_PEERCRED,12)
+  return struct.pack("3i",*[int(x) for x in open(os.environ["HC"]+"/peer").read().split()])
+ def close(self): pass
+socket.socket=Fake
+payload=sys.argv[4]
+sys.argv=["probe",sys.argv[5]]
+exec(payload)
+' "$@"`;
+const TREE = {
+  "/usr/bin/python3": PYTHON_STUB,
+  [NODE]: NODE_STUB,
+  [CLAUDE]: `[ "\${1:-}" = --version ] && cat "$HC/claude-version"; exit 0`,
+  [CLI]: `${log("mosaic")}
+case "$1" in
+  talk) case "$(cat "$HC/talk-mode")" in
+      reply) echo "sent ab12cd34 to chief"; echo "[chief -> tester] seen" ;;
+      noreply) echo "sent ab12cd34 to chief"; echo "no reply from chief within 300 s" >&2; exit 1 ;;
+      sentonly) echo "sent ab12cd34 to chief" ;;
+    esac ;;
+  launches) cat "$HC/launches.json" ;;
+  *) exit 2 ;;
+esac`,
+  [PRECHECK]: `${log("precheck")}
+echo "precheck: done"; exit "$(cat "$HC/precheck-rc")"`,
+  "/usr/local/lib/mosaic-stack/hostcheck.sh": `${log("hostcheck")}
+cat "$HC/hostcheck-out"`,
+};
+
+function proc(root, pid, { ppid, uid = 997, exe, argv0 = "x", comm = "x", label }) {
+  const d = join(root, "proc", String(pid));
+  put(join(d, "status"), `Name:\t${comm}\nState:\tS (sleeping)\nPPid:\t${ppid}\nUid:\t${uid}\t${uid}\t${uid}\t${uid}\n`);
+  put(join(d, "cmdline"), `${argv0}\0--x\0`);
+  put(join(d, "comm"), `${comm}\n`);
+  rmSync(join(d, "exe"), { force: true });
+  if (exe) symlinkSync(exe, join(d, "exe"));
+  if (label !== undefined) put(join(d, "attr", "current"), label);
+}
+
+// A scratch Case 1 host where every F check passes and every P check is closed or accepted.
+function host(t) {
+  const dir = tmp(t, "c1accept-");
+  const root = join(dir, "root"), hc = join(dir, "hc"), bin = join(dir, "bin");
+  const args = join(root, "etc", "mosaic-stack", "dev.args");
+  put(args, ARGS.join("\n") + "\n", 0o644);
+  put(join(root, "etc", "passwd"), PASSWD);
+  put(join(root, "etc", "group"), GROUP);
+  put(join(root, "etc", "sudoers.d", "90-localadmin"), "localadmin ALL=(ALL) NOPASSWD: ALL\n");
+  put(join(root, "etc", "claude-code", "managed-settings.json"), JSON.stringify({ env: { DISABLE_AUTOUPDATER: "1" } }));
+  put(join(root, CRED), `CLAUDE_CODE_OAUTH_TOKEN=${CRED_VALUE}\n`, 0o600);
+  put(join(root, HOME, ".config", "mosaic-dev", "businesses", "mosaic-stack.json"), JSON.stringify({ id: "mosaic-stack", launch: { by: "pm" } }));
+  put(join(root, "proc", "sys", "net", "ipv4", "ip_unprivileged_port_start"), "1024\n");
+  proc(root, 1, { ppid: 0, uid: 0, exe: "/usr/lib/systemd/systemd", comm: "systemd" });
+  proc(root, 100, { ppid: 1, exe: NODE, argv0: NODE, comm: "node" });
+  proc(root, 200, { ppid: 1, exe: NODE, argv0: NODE, comm: "node" });
+  proc(root, 300, { ppid: 100, exe: "/usr/bin/bwrap", argv0: "/usr/bin/bwrap", comm: "bwrap", label: `${OUTER}\n` });
+  proc(root, 301, { ppid: 300, exe: NODE, argv0: NODE, comm: "node", label: `${CHILD}\n` });
+  proc(root, 302, { ppid: 301, exe: CLAUDE, argv0: CLAUDE, comm: "claude.exe", label: `${CHILD}\n` });
+  // A root bwrap with a mislabelled claude child, which F5 must pass over.
+  proc(root, 400, { ppid: 1, uid: 0, exe: "/usr/bin/bwrap", argv0: "/usr/bin/bwrap", comm: "bwrap", label: "unconfined\n" });
+  proc(root, 401, { ppid: 400, uid: 0, argv0: "claude", comm: "claude", label: "unconfined\n" });
+  const state = {
+    "[email protected]": "ActiveState=active\nUser=mosaic\nMainPID=100\n",
+    "show-mosaic-webui.service": "ActiveState=active\nUser=mosaic\nMainPID=200\n",
+    "show-mosaic-hostcheck.service": "[email protected] mosaic-webui.service multi-user.target\n",
+    "enabled-mosaic-hostcheck.service": "enabled\n",
+    "curl-rc": "0", ss: SS,
+    "stat-parent": "997 700 directory 9 10\n", "stat-socket": "997 600 socket 9 11\n", peer: "200 997 997\n",
+    "stat-cred": "mosaic 600 regular file\n", "stat-settings": "root:root 644 regular file\n",
+    "sudo-l-mosaic": "User mosaic is not allowed to run sudo on dev-53.\n",
+    "sudo-l-localadmin": "User localadmin may run the following commands on dev-53:\n    (ALL : ALL) ALL\n    (ALL) NOPASSWD: ALL\n",
+    "jarvis-bwrap": "sudo: unable to execute /usr/bin/bwrap: Permission denied\n", "jarvis-bwrap-rc": "1",
+    "node-version": `${NODE_PIN}\n`, "claude-version": `${CLAUDE_PIN} (Claude Code)\n`,
+    "talk-mode": "reply", "precheck-rc": "0", "hostcheck-out": HOSTCHECK_OK,
+    "launches.json": JSON.stringify([
+      { instance: "pm", live: true, business: "mosaic-stack", run: "r-0002" },
+      { instance: "pm", live: false, business: "mosaic-stack", run: "r-0001" },
+      { instance: "dev-1", live: true, business: "mosaic-stack", run: "r-0003" },
+    ]),
+  };
+  for (const [name, text] of Object.entries(state)) put(join(hc, name), text);
+  for (const [name, body] of Object.entries(FAKES)) put(join(bin, name), `#!/usr/bin/env bash\n${name === "stat" ? "" : log(name)}\n${body}\n`, 0o755);
+  for (const [path, body] of Object.entries(TREE)) put(join(root, path), `#!/usr/bin/env bash\n${body}\n`, 0o755);
+  const copyRoot = join(root, HOME, '.local/share/mosaic-stack/copies', COPY);
+  put(join(copyRoot, 'packages/cli/src/config.mjs'), `import fs from 'node:fs';export const loadSystem=()=>({dataRoot:fs.readFileSync(${JSON.stringify(join(hc,'data-root'))},'utf8').trim()});`);
+  put(join(copyRoot, 'packages/webui/src/cli.mjs'), '// MOSAIC_TESTER_SOCKET_V1\n');
+  put(join(hc, 'data-root'), `${HOME}/.mosaic-dev\n`);
+  put(join(root, HOME, '.mosaic-dev/console/tester.sock'), 'stand-in socket metadata only');
+  chmodSync(join(root, HOME, '.mosaic-dev/console'), 0o700);
+  // F9 runs node only when it and each directory above it have no group or other write, whatever the umask.
+  for (let d = dirname(NODE); d !== "/"; d = dirname(d)) chmodSync(join(root, d), 0o755);
+  chmodSync(root, 0o755);
+  return { dir, root, hc, bin, args };
+}
+
+function run(h, extra = {}, argv = ["--business", "mosaic-stack", "--args", "/etc/mosaic-stack/dev.args", "--claude-pin", CLAUDE_PIN, "--node-pin", NODE_PIN, "--root", h.root]) {
+  const r = spawnSync(SCRIPT, argv, {
+    encoding: "utf8",
+    env: { ...process.env, PATH: `${h.bin}:${process.env.PATH}`, HC: h.hc, ROOT_DIR: h.root, REAL_NODE: process.execPath, TMPDIR: h.dir, ...extra },
+  });
+  const lines = r.stdout.split("\n").filter(Boolean);
+  // Each check line as { id, path, mark, evidence }.
+  const checks = lines.filter((l) => /^[FP][0-9]+ /.test(l)).map((l) => {
+    const [id, path, ...rest] = l.split(" ");
+    const tail = rest.join(" ");
+    const mark = MARKS.find((m) => tail === m || tail.startsWith(`${m} `));
+    return { id, path, mark, evidence: tail.slice(mark?.length ?? 0).trim(), line: l };
+  });
+  return { status: r.status, out: r.stdout, err: r.stderr, lines, checks };
+}
+const calls = (h, name) => (existsSync(join(h.hc, "calls.log")) ? readFileSync(join(h.hc, "calls.log"), "utf8") : "")
+  .split("\n").filter((l) => l === name || l.startsWith(`${name} `)).map((l) => l.slice(name.length + 1));
+const failed = (r) => r.checks.filter((c) => c.mark === "FAIL").map((c) => c.id);
+const marksOf = (r, id) => r.checks.filter((c) => c.id === id).map((c) => c.mark);
+const mustRun = (h, extra) => { const r = run(h, extra); assert.ok(r.status === 0 || r.status === 1, r.out + r.err); return r; };
+
+test('row253 socket observation uses configured root, metadata and the Console peer without sending bytes', t=>{
+  const h=host(t), data='/srv/mosaic/custom-data';
+  put(join(h.hc,'data-root'),data+'\n');
+  put(join(h.root,data,'console/tester.sock'),'metadata stand-in');
+  const r=run(h);
+  assert.equal(r.status,0,r.out+r.err);
+  assert.match(r.out,/P10 tester-socket-squat unnamed boundary=observed path=\/srv\/mosaic\/custom-data\/console\/tester.sock/);
+  assert.match(r.out,/peer_pid=200 peer_uid=997/);
+  assert.match(r.out,/hostile same-uid substitution remains/);
+  assert.doesNotMatch(r.out,/accepted mos-1101/);
+  assert.deepEqual(marksOf(r,'P8'),['closed']);
+});
+
+test('row253 P10 refuses unsafe metadata, wrong peers and an unsafe Python without claiming closure',t=>{
+  const faults={
+    'parent-mode': h=>put(join(h.hc,'stat-parent'),'997 755 directory 9 10\n'),
+    'parent-owner': h=>put(join(h.hc,'stat-parent'),'998 700 directory 9 10\n'),
+    'socket-mode': h=>put(join(h.hc,'stat-socket'),'997 660 socket 9 11\n'),
+    'socket-owner': h=>put(join(h.hc,'stat-socket'),'998 600 socket 9 11\n'),
+    'socket-type': h=>put(join(h.hc,'stat-socket'),'997 600 regular file 9 11\n'),
+    symlink:h=>{const p=join(h.root,HOME,'.mosaic-dev/console/tester.sock');rmSync(p);symlinkSync('/absent',p);},
+    peer:h=>put(join(h.hc,'peer'),'200 998 997\n'),
+    'peer-pid':h=>put(join(h.hc,'peer'),'555 997 997\n'),
+    'python-mode':h=>chmodSync(join(h.root,'usr/bin/python3'),0o777),
+    'python-missing':h=>rmSync(join(h.root,'usr/bin/python3')),
+    'python-not-elf':h=>put(join(h.hc,'elf'),'23212f62\n'),
+    'peer-malformed':h=>{put(join(h.hc,'peer-output'),'200 997 997 extra\n');put(join(h.hc,'peer-status'),'0');},
+    'peer-error':h=>{put(join(h.hc,'peer-output'),'200 997 997\n');put(join(h.hc,'peer-status'),'1');},
+    'peer-uid-fields':h=>proc(h.root,200,{ppid:1,uid:998,exe:NODE,comm:'node'}),
+    'changed-inode':h=>put(join(h.hc,'peer-change'),'997 600 socket 9 99\n'),
+    'changed-pid':h=>put(join(h.hc,'peer-pid-change'),'ActiveState=active\nUser=mosaic\nMainPID=201\n'),
+    floor:h=>put(join(h.root,'proc/sys/net/ipv4/ip_unprivileged_port_start'),'700\n'),
+  };
+  for(const [name,fault] of Object.entries(faults)){
+    const h=host(t);fault(h);const r=run(h);
+    assert.equal(r.status,name==='peer-uid-fields'?1:0,`${name}: ${r.out}${r.err}`);
+    assert.match(r.out,/P10 tester-socket-squat unnamed boundary=failed/,name);
+    assert.doesNotMatch(r.out,/boundary=observed/,name);
+  }
+});
+
+test('row253 acceptance rejects bad config and unsupported copies before talk',t=>{
+  const faults={
+    outside:h=>put(join(h.hc,'data-root'),'/srv/mosaic2/data\n'),
+    dot:h=>put(join(h.hc,'data-root'),'/srv/mosaic/./data\n'),
+    absent:h=>rmSync(join(h.root,HOME,'.local/share/mosaic-stack/copies',COPY,'packages/cli/src/config.mjs')),
+    unmarked:h=>put(join(h.root,HOME,'.local/share/mosaic-stack/copies',COPY,'packages/webui/src/cli.mjs'),'// old copy'),
+    schema:h=>put(join(h.root,HOME,'.local/share/mosaic-stack/copies',COPY,'packages/cli/src/config.mjs'),'console.log(JSON.stringify({dataRoot:"/srv/mosaic/.mosaic-dev",socket:true,extra:1}));process.exit(0);'),
+    failed:h=>put(join(h.root,HOME,'.local/share/mosaic-stack/copies',COPY,'packages/cli/src/config.mjs'),'console.log(JSON.stringify({dataRoot:"/srv/mosaic/.mosaic-dev",socket:true}));process.exit(1);'),
+  };
+  for(const [name,fault] of Object.entries(faults)){
+    const h=host(t);fault(h);const r=run(h);
+    assert.equal(r.status,2,`${name}: ${r.out}${r.err}`);assert.equal(r.out,'');
+    assert.match(r.err,/tester (config query|path refuses)|support/);
+    assert.deepEqual(calls(h,'mosaic'),[]);
+  }
+});
+
+test('row253 stalled peer observation ends within its bound without leaving a reader',async t=>{
+  const h=host(t);put(join(h.hc,'peer-hang'),'');
+  const r=run(h);assert.equal(r.status,0,r.out+r.err);
+  assert.match(r.out,/P10 tester-socket-squat unnamed boundary=failed reason=probe/);
+  const pid=Number(readFileSync(join(h.hc,'peer-pid'),'utf8'));
+  let state='gone';
+  for(let n=0;n<50;n++){
+    try{state=readFileSync(`/proc/${pid}/stat`,'utf8').split(') ')[1].split(' ')[0];}catch{state='gone';}
+    if(state==='gone'||state==='Z')break;
+    await new Promise(resolve=>setTimeout(resolve,10));
+  }
+  assert.ok(state==='gone'||state==='Z',`peer helper ${pid} still ${state}`);
+});
+
+test('row253 P8 refuses both retired TCP and board listeners',t=>{
+  for(const port of [7333,7331]){
+    const h=host(t);put(join(h.hc,'ss'),SS+`LISTEN 0 511 127.0.0.1:${port} 0.0.0.0:* users:(("node",pid=200,fd=22))\n`);
+    assert.deepEqual(marksOf(run(h),'P8'),['unnamed']);
+  }
+});
+
+test('row253 C4 acceptance query inner reason holds under both sudo models',async t=>{
+ for(const mode of ['exec','hop']){
+  const h=host(t),files=[join(h.hc,'session-pids'),join(h.hc,'query-pids')];
+  put(join(h.hc,'session-mode'),mode);
+  put(join(h.root,HOME,'.local/share/mosaic-stack/copies',COPY,'packages/cli/src/config.mjs'),blockingQuerySource(files[1]));
+  const capture=cleanupFixture(t,files);const stop=fixtureGuard(t,files);
+  const start=performance.now(),r=run(h),seconds=(performance.now()-start)/1000;capture();
+  assert.equal(r.status,2,r.out+r.err);assert.equal(r.err,'case1-accept: refusing: tester config query inner-timeout\n');
+  assert.ok(seconds<7,`${mode}: ${seconds}s`);assert.equal(r.out,'');assert.deepEqual(calls(h,'mosaic'),[]);
+  assert.deepEqual(await pollFixtureGone(files),[]);await stop();
+ }
+});
+
+test('row253 C4 acceptance query outer reason discards stdout and names residual cleanup',async t=>{
+ for(const mode of ['exec','hop']){
+  const h=host(t),files=[join(h.hc,'session-pids')];put(join(h.hc,'session-mode'),mode);put(join(h.hc,'stall-config'),'');
+  put(join(h.hc,'stall-output'),JSON.stringify({dataRoot:HOME+'/.mosaic-dev',socket:true}));
+  const capture=cleanupFixture(t,files);const stop=fixtureGuard(t,files);
+  const start=performance.now(),r=run(h),seconds=(performance.now()-start)/1000;capture();
+  assert.equal(r.status,2,r.out+r.err);assert.equal(r.err,'case1-accept: refusing: tester config query outer-timeout\n');
+  assert.ok(seconds>=7&&seconds<9,`${mode}: ${seconds}s; 2s preflight slack`);
+  assert.equal(r.out,'');assert.deepEqual(calls(h,'mosaic'),[]);
+  if(mode==='hop')assert.ok(recordedLivePids(files[0]).length>0,'R3 session remains before fixture cleanup');
+  killRecordedPids(files[0]);assert.deepEqual(await pollFixtureGone(files),[],'explicit R3 fixture cleanup');await stop();
+ }
+});
+
+test('row253 C4 acceptance query overflow is output-limit in both models',async t=>{
+ for(const mode of ['exec','hop']){
+  const h=host(t),files=[join(h.hc,'session-pids')];put(join(h.hc,'session-mode'),mode);const capture=cleanupFixture(t,files);
+  put(join(h.root,HOME,'.local/share/mosaic-stack/copies',COPY,'packages/cli/src/config.mjs'),`process.stdout.write('X'.repeat(8192));export const loadSystem=()=>({dataRoot:'${HOME}/.mosaic-dev'});`);
+  const r=run(h);capture();assert.equal(r.status,2,r.out+r.err);assert.equal(r.err,'case1-accept: refusing: tester config query output-limit\n');
+  assert.equal(r.out,'');assert.deepEqual(calls(h,'mosaic'),[]);assert.deepEqual(await pollFixtureGone(files),[]);
+ }
+});
+
+for(const fault of ['inner','outer','overflow'])test(`row253 C4 P10 ${fault} reason holds under both sudo models`,async t=>{
+ for(const mode of ['exec','hop']){
+  const h=host(t),files=[join(h.hc,'session-pids'),join(h.hc,'query-pids')];put(join(h.hc,'session-mode'),mode);
+  const capture=cleanupFixture(t,files);const stop=fixtureGuard(t,files,7000);
+  if(fault==='inner')put(join(h.hc,'peer-hang'),'');
+  if(fault==='outer'){put(join(h.hc,'stall-probe'),'');put(join(h.hc,'stall-output'),'200 997 997\n');}
+  if(fault==='overflow'){put(join(h.hc,'peer-output'),'200 997 997\n'+'X'.repeat(256));put(join(h.hc,'peer-status'),'0');}
+  const start=performance.now(),r=run(h),seconds=(performance.now()-start)/1000;capture();
+  assert.equal(r.status,0,r.out+r.err);
+  const reason=fault==='inner'?'inner-timeout':fault==='outer'?'outer-timeout':'output-limit';
+  assert.match(r.out,new RegExp('P10 tester-socket-squat unnamed boundary=failed reason=probe-'+reason+' '));
+  assert.doesNotMatch(r.out,/boundary=observed/);
+  if(fault==='inner')assert.ok(seconds<4,`${mode}: ${seconds}s includes functional checks`);
+  if(fault==='outer'){
+   assert.ok(seconds>=4&&seconds<6,`${mode}: ${seconds}s; 2s functional-check slack`);
+   if(mode==='hop')assert.ok(recordedLivePids(files[0]).length>0,'stalled supervisor is R3 residual');
+   for(const file of files)killRecordedPids(file);
+  }
+  assert.deepEqual(await pollFixtureGone(files),[],fault==='outer'?'explicit R3 cleanup':mode);await stop();
+ }
+});
+
+// One fault per F check; each makes that check, and only that one, fail.
+const F_FAULTS = {
+  F1: (h) => proc(h.root, 100, { ppid: 1, uid: 0, exe: NODE, comm: "node" }),
+  F2: (h) => put(join(h.hc, "ss"), SS.replace("127.0.0.1:732 ", "0.0.0.0:732 ")),
+  F3: (h) => put(join(h.hc, "talk-mode"), "noreply"),
+  F4: (h) => put(join(h.hc, "precheck-rc"), "1"),
+  F5: (h) => put(join(h.root, "proc", "302", "attr", "current"), "unconfined\n"),
+  F6: (h) => put(join(h.hc, "claude-version"), "2.0.9 (Claude Code)\n"),
+  F7: (h) => put(join(h.hc, "launches.json"), JSON.stringify([{ instance: "pm", live: false, business: "mosaic-stack", run: "r-1" }])),
+  F8: (h) => put(join(h.hc, "stat-cred"), "mosaic 640 regular file\n"),
+  F9: (h) => put(join(h.root, "etc", "claude-code", "managed-settings.json"), JSON.stringify({ env: { DISABLE_AUTOUPDATER: "0" } })),
+  F10: (h) => put(join(h.hc, "node-version"), "v24.0.0\n"),
+  F11: (h) => put(join(h.root, HOME, ".mosaic-dev", "discord", "binding.json"), "{}"),
+};
+
+test("row 195 accept: every check passing exits 0, with each P mark and counts that match the lines", (t) => {
+  const h = host(t);
+  const r = run(h);
+  assert.equal(r.status, 0, r.out + r.err);
+  assert.deepEqual(r.checks.map((c) => c.id), ["F1", "F2", "F3", "F4", "F5", "F6", "F7", "F8", "F9", "F10", "F11",
+    "P1", "P2", "P3", "P4", "P5", "P6", "P7", "P8", "P9", "P10", "P11"]);
+  for (const c of r.checks.filter((x) => x.id.startsWith("F"))) assert.equal(c.mark, "pass", c.line);
+  for (const [id, mark] of Object.entries(P_PASS)) assert.deepEqual(marksOf(r, id), [mark], id);
+  const counts = r.lines.filter((l) => l.startsWith("count ")).map((l) => l.slice(6));
+  assert.deepEqual(counts, MARKS.map((m) => `${m} ${r.checks.filter((c) => c.mark === m).length}`));
+  assert.match(r.lines.at(-1), /^case1-accept: every F check passes/);
+  assert.match(r.out, /^F5 bwrap-label pass bwrap 300 reads 'bwrap \(enforce\)' and its claude descendant 302 reads/m);
+  assert.match(r.out, /^F7 pm-live pass one live launch: pm run r-0002$/m);
+  assert.ok(!(r.out + r.err).includes(CRED_VALUE));
+  assert.ok(existsSync(join(h.hc, "node-as-root")), "F9 runs the pinned, root-only node as root");
+});
+
+test("row 195 accept: exits 1 with each F check failing alone, and its line names it", (t) => {
+  for (const [id, fault] of Object.entries(F_FAULTS)) {
+    const h = host(t);
+    fault(h);
+    const r = mustRun(h);
+    assert.equal(r.status, 1, `${id}: ${r.out}`);
+    assert.deepEqual(failed(r), [id], `${id}: ${r.out}`);
+    assert.equal(r.lines.at(-1), "case1-accept: an F check failed, so the row fails");
+  }
+});
+
+test("row 195 accept: F3 fails on exit 0 with no reply line, and its evidence takes talk's error", (t) => {
+  let h = host(t);
+  put(join(h.hc, "talk-mode"), "sentonly");
+  let r = mustRun(h);
+  assert.deepEqual(failed(r), ["F3"]);
+  assert.match(r.out, /^F3 tester-reply FAIL talk exited 0 with 1 lines on stdout; last: sent ab12cd34 to chief$/m);
+  h = host(t);
+  put(join(h.hc, "talk-mode"), "noreply");
+  r = mustRun(h);
+  assert.match(r.out, /^F3 tester-reply FAIL talk exited 1 with 1 lines on stdout; last: no reply from chief within 300 s$/m);
+});
+
+test("row 195 accept: F1 fails on a unit that isn't active or isn't User=mosaic", (t) => {
+  for (const show of ["ActiveState=failed\nUser=mosaic\nMainPID=0\n", "ActiveState=active\nUser=root\nMainPID=100\n"]) {
+    const h = host(t);
+    put(join(h.hc, "show-mosaic-webui.service"), show);
+    const r = mustRun(h);
+    assert.equal(r.status, 1);
+    assert.ok(failed(r).includes("F1"), r.out);
+  }
+});
+
+test("row 195 accept: F2 fails when healthz doesn't answer and when another pid holds the port", (t) => {
+  let h = host(t);
+  put(join(h.hc, "curl-rc"), "7");
+  let r = mustRun(h);
+  assert.deepEqual(failed(r), ["F2"]);
+  assert.match(r.out, /^F2 console-loopback FAIL curl http:\/\/127\.0\.0\.1:732\/healthz exited 7$/m);
+  h = host(t);
+  put(join(h.hc, "ss"), SS.replace("pid=200,fd=21", "pid=555,fd=4"));
+  r = mustRun(h);
+  assert.deepEqual(failed(r), ["F2"]);
+});
+
+test("row 195 accept: F5 fails on unpriv_bwrap (enforce), on complain and on a trailing space", (t) => {
+  for (const label of ["unpriv_bwrap (enforce)\n", "bwrap//&unpriv_bwrap (complain)\n", `${CHILD} \n`]) {
+    const h = host(t);
+    put(join(h.root, "proc", "302", "attr", "current"), label);
+    const r = mustRun(h);
+    assert.deepEqual(failed(r), ["F5"], `${JSON.stringify(label)}: ${r.out}`);
+  }
+  const h = host(t);
+  put(join(h.root, "proc", "300", "attr", "current"), `${OUTER} \n`);
+  assert.deepEqual(failed(mustRun(h)), ["F5"]);
+});
+
+test("row 195 accept: F5 fails with no bwrap of mosaic's, and passes on comm alone", (t) => {
+  let h = host(t);
+  proc(h.root, 300, { ppid: 100, uid: 1001, exe: "/usr/bin/bwrap", comm: "bwrap", label: `${OUTER}\n` });
+  let r = mustRun(h);
+  assert.deepEqual(failed(r), ["F5"]);
+  assert.match(r.out, /^F5 bwrap-label FAIL no \/usr\/bin\/bwrap process of mosaic/m);
+  h = host(t);
+  proc(h.root, 302, { ppid: 301, argv0: "/proc/self/fd/3", comm: "claude", label: `${CHILD}\n` });
+  assert.deepEqual(failed(mustRun(h)), []);
+});
+
+test("row 195 accept: F6 fails on a stub that prints nothing, on a path outside claude-<pin> and on a .. segment", (t) => {
+  let h = host(t);
+  put(join(h.hc, "claude-version"), "");
+  let r = mustRun(h);
+  assert.deepEqual(failed(r), ["F6"]);
+  h = host(t);
+  const other = CLAUDE.replace(`claude-${CLAUDE_PIN}`, "claude-2.0.9");
+  put(h.args, ARGS.map((a) => (a === CLAUDE ? other : a)).join("\n") + "\n", 0o644);
+  put(join(h.root, other), `#!/usr/bin/env bash\necho "${CLAUDE_PIN} (Claude Code)"\n`, 0o755);
+  r = mustRun(h);
+  assert.deepEqual(failed(r), ["F6"]);
+  assert.match(r.out, /^F6 claude-pin FAIL --claude \S+claude-2\.0\.9\S+ is not under \/opt\/mosaic-stack\/claude-2\.1\.0\/$/m);
+  // Under claude-<pin>/ by prefix, but the binary it names is 2.0.9's, which answers with the pin.
+  h = host(t);
+  const dotdot = CLAUDE.replace(`claude-${CLAUDE_PIN}/`, `claude-${CLAUDE_PIN}/../claude-2.0.9/`);
+  put(h.args, ARGS.map((a) => (a === CLAUDE ? dotdot : a)).join("\n") + "\n", 0o644);
+  put(join(h.root, other), `#!/usr/bin/env bash\necho "${CLAUDE_PIN} (Claude Code)"\n`, 0o755);
+  r = mustRun(h);
+  assert.deepEqual(failed(r), ["F6"], r.out);
+  assert.match(r.out, /^F6 claude-pin FAIL --claude \S+\/claude-2\.1\.0\/\.\.\/claude-2\.0\.9\/\S+ has a \.\. segment$/m);
+});
+
+test("row 195 accept: F7 fails on two live PM launches, one for another business, and no launch.by", (t) => {
+  const two = [{ instance: "pm", live: true, business: "mosaic-stack", run: "a" }, { instance: "pm", live: true, business: "mosaic-stack", run: "b" }];
+  for (const [file, text] of [["launches.json", JSON.stringify(two)], ["launches.json", JSON.stringify([{ instance: "pm", live: true, business: "other", run: "a" }])]]) {
+    const h = host(t);
+    put(join(h.hc, file), text);
+    assert.deepEqual(failed(mustRun(h)), ["F7"]);
+  }
+  const h = host(t);
+  put(join(h.root, HOME, ".config", "mosaic-dev", "businesses", "mosaic-stack.json"), JSON.stringify({ id: "mosaic-stack" }));
+  const r = mustRun(h);
+  assert.deepEqual(failed(r), ["F7"]);
+  assert.match(r.out, /^F7 pm-live FAIL the business file has no launch\.by$/m);
+});
+
+test("row 195 accept: F8 fails on 0640, on another owner and on a symlink, and never prints the credential", (t) => {
+  for (const fault of [
+    (h) => put(join(h.hc, "stat-cred"), "mosaic 640 regular file\n"),
+    (h) => put(join(h.hc, "stat-cred"), "root 600 regular file\n"),
+    (h) => { const f = join(h.root, CRED); rmSync(f); put(`${f}.real`, `X=${CRED_VALUE}\n`, 0o600); symlinkSync(`${f}.real`, f); },
+  ]) {
+    const h = host(t);
+    fault(h);
+    const r = mustRun(h);
+    assert.deepEqual(failed(r), ["F8"], r.out);
+    assert.ok(!(r.out + r.err).includes(CRED_VALUE));
+  }
+});
+
+test("row 195 accept: F9 fails on another owner, a group-writable mode and a number for the flag", (t) => {
+  for (const fault of [
+    (h) => put(join(h.hc, "stat-settings"), "root:root 664 regular file\n"),
+    (h) => put(join(h.hc, "stat-settings"), "mosaic:root 644 regular file\n"),
+    (h) => put(join(h.root, "etc", "claude-code", "managed-settings.json"), JSON.stringify({ env: { DISABLE_AUTOUPDATER: 1 } })),
+  ]) {
+    const h = host(t);
+    fault(h);
+    assert.deepEqual(failed(mustRun(h)), ["F9"]);
+  }
+});
+
+test("row 195 accept: F9 won't run --node as root off the pin path or with a writable directory above it", (t) => {
+  // Another node that works for the stack's user: F9 refuses to run it, and F10 fails on the path.
+  let h = host(t);
+  const other = NODE.replace(NODE_PIN, "v24.0.9");
+  put(h.args, ARGS.map((a) => (a === NODE ? other : a)).join("\n") + "\n", 0o644);
+  put(join(h.root, other), `#!/usr/bin/env bash\n${NODE_STUB}\n`, 0o755);
+  let r = mustRun(h);
+  assert.deepEqual(failed(r), ["F9", "F10"], r.out);
+  assert.match(r.out, /^F9 autoupdater-off FAIL root won't run --node \/opt\/mosaic-stack\/node-v24\.0\.9\/bin\/node: it is not the --node-pin path$/m);
+  assert.ok(!existsSync(join(h.hc, "node-as-root")));
+  // The pinned path, under a group-writable directory and then a symlinked node: F9 alone fails, and
+  // root doesn't run it.
+  for (const [fault, bad] of [
+    [(x) => chmodSync(join(x.root, dirname(NODE)), 0o775), "/opt/mosaic-stack/node-v24\\.1\\.0/bin \\(uid \\d+, mode 775\\)"],
+    [(x) => { const f = join(x.root, NODE); renameSync(f, `${f}.real`); symlinkSync(`${f}.real`, f); }, "/opt/mosaic-stack/node-v24\\.1\\.0/bin/node \\(uid \\d+, mode 777\\)"],
+  ]) {
+    h = host(t);
+    fault(h);
+    r = mustRun(h);
+    assert.deepEqual(failed(r), ["F9"], r.out);
+    assert.match(r.out, new RegExp(`^F9 autoupdater-off FAIL root won't run --node \\S+: ${bad} is not root's alone$`, "m"));
+    assert.ok(!existsSync(join(h.hc, "node-as-root")));
+  }
+});
+
+test("row 195 accept: F11 fails on one *.json under discord/ and passes on an empty directory", (t) => {
+  let h = host(t);
+  put(join(h.root, HOME, ".mosaic-dev", "discord", "chief.json"), "{}");
+  let r = mustRun(h);
+  assert.deepEqual(failed(r), ["F11"]);
+  assert.match(r.out, /^F11 no-discord FAIL \/srv\/mosaic\/\.mosaic-dev\/discord holds bindings: chief\.json$/m);
+  h = host(t);
+  mkdirSync(join(h.root, HOME, ".mosaic-dev", "discord"), { recursive: true });
+  assert.deepEqual(failed(mustRun(h)), []);
+});
+
+// Each P check in its unnamed mark, with the line count each fault makes; none changes the exit.
+const P_FAULTS = {
+  P1: [1, (h) => put(join(h.hc, "sudo-l-mosaic"), "User mosaic may run the following commands on dev-53:\n")],
+  P2: [1, (h) => put(join(h.root, HOME, ".ssh", "authorized_keys"), "ssh-ed25519 AAAA test\n")],
+  P5: [1, (h) => edit(join(h.root, "etc", "group"), (s) => s.replace("docker:x:999:", "docker:x:999:jarvis"))],
+  P6: [2, (h) => edit(join(h.root, "etc", "group"), (s) => s.replace("sudo:x:27:localadmin", "sudo:x:27:localadmin,bob").replace("lxd:x:998:", "lxd:x:998:carol"))],
+  P7: [1, (h) => put(join(h.root, "etc", "sudoers.d", "50-mosaic"), "mosaic ALL=(root) NOPASSWD: /usr/bin/systemctl\n")],
+  P8: [1, (h) => put(join(h.hc, "ss"), `${SS}LISTEN 0 511 0.0.0.0:7331 0.0.0.0:* users:(("node",pid=200,fd=23))\n`)],
+  P9: [3, (h) => { put(join(h.hc, "hostcheck-out"), HOSTCHECK_OK.replace("ok 2 ", "FAIL 2 ").replace("ok 5 ", "FAIL 5 ")); put(join(h.hc, "jarvis-bwrap-rc"), "0"); }],
+  P10: [1, (h) => put(join(h.root, "proc", "sys", "net", "ipv4", "ip_unprivileged_port_start"), "700\n")],
+  P11: [1, (h) => put(join(h.hc, "show-mosaic-hostcheck.service"), "[email protected] multi-user.target\n")],
+};
+
+test("row 195 accept: each P check reports unnamed on its fault, and the exit stays 0", (t) => {
+  for (const [id, [n, fault]] of Object.entries(P_FAULTS)) {
+    const h = host(t);
+    fault(h);
+    const r = run(h);
+    assert.equal(r.status, 0, `${id}: ${r.out}`);
+    assert.deepEqual(marksOf(r, id), Array(n).fill("unnamed"), `${id}: ${r.out}`);
+  }
+});
+
+test("row 195 accept: P2 is unnamed with a supplementary group, and P5 names docker", (t) => {
+  let h = host(t);
+  put(join(h.root, "etc", "group"), GROUP.replace("lxd:x:998:", "lxd:x:998:mosaic"));
+  let r = run(h);
+  assert.equal(r.status, 0);
+  assert.deepEqual(marksOf(r, "P2"), ["unnamed"]);
+  assert.match(r.out, /^P2 mosaic-groups-keys unnamed id -G is '997 998'; authorized_keys is absent$/m);
+  h = host(t);
+  P_FAULTS.P5[1](h);
+  r = run(h);
+  assert.match(r.out, /^P5 jarvis-reach unnamed jarvis is in docker$/m);
+  assert.match(r.out, /^P6 group-docker unnamed jarvis is a member of docker$/m);
+});
+
+test("row 195 accept: P5 is closed with no jarvis account, and P2 with an empty authorized_keys", (t) => {
+  const h = host(t);
+  put(join(h.root, "etc", "passwd"), PASSWD.replace(/^jarvis:.*\n/m, ""));
+  put(join(h.root, HOME, ".ssh", "authorized_keys"), "");
+  const r = run(h);
+  assert.deepEqual(marksOf(r, "P5"), ["closed"]);
+  assert.deepEqual(marksOf(r, "P2"), ["closed"]);
+});
+
+test("row 195 accept: P9 is unnamed once for each item missing", (t) => {
+  const items = {
+    hostcheck: (h) => put(join(h.hc, "hostcheck-out"), HOSTCHECK_OK.replace("ok 3 ", "FAIL 3 ")),
+    jarvis: (h) => { put(join(h.hc, "jarvis-bwrap-rc"), "0"); put(join(h.hc, "jarvis-bwrap"), ""); },
+    member: (h) => put(join(h.root, "etc", "group"), GROUP.replace("mosaic:x:997:", "mosaic:x:997:jarvis")),
+    gid: (h) => put(join(h.root, "etc", "passwd"), `${PASSWD}hermes:x:1002:997::/home/hermes:/bin/bash\n`),
+  };
+  for (const [name, fault] of Object.entries(items)) {
+    const h = host(t);
+    fault(h);
+    const r = run(h);
+    assert.equal(r.status, 0);
+    assert.deepEqual(marksOf(r, "P9"), ["unnamed"], `${name}: ${r.out}`);
+  }
+  const h = host(t);
+  put(join(h.hc, "hostcheck-out"), "");
+  assert.deepEqual(marksOf(run(h), "P9"), Array(6).fill("unnamed"));
+});
+
+test("row253 accept: P10 fails its observation with another peer; P11 with the unit disabled", (t) => {
+  let h = host(t);
+  put(join(h.hc, "peer"), "555 997 997\n");
+  let r = run(h);
+  assert.equal(r.status, 0);
+  assert.deepEqual(marksOf(r, "P10"), ["unnamed"]);
+  assert.match(r.out, /P10 tester-socket-squat unnamed boundary=failed reason=peer/);
+  h = host(t);
+  put(join(h.hc, "enabled-mosaic-hostcheck.service"), "disabled\n");
+  r = run(h);
+  assert.deepEqual(marksOf(r, "P11"), ["unnamed"]);
+});
+
+test("row 195 accept: every P check unnamed together still exits 0", (t) => {
+  const h = host(t);
+  for (const [, fault] of Object.values(P_FAULTS)) fault(h);
+  const r = run(h);
+  assert.equal(r.status, 0, r.out + r.err);
+  assert.deepEqual(failed(r), []);
+  for (const id of ["P1", "P2", "P5", "P6", "P7", "P8", "P9", "P10", "P11"]) assert.ok(marksOf(r, id).every((m) => m === "unnamed"), id);
+  assert.match(r.lines.at(-1), /^case1-accept: every F check passes/);
+});
+
+test("row 195 accept: a bad args file refuses with exit 2 before any check, each for its own reason", (t) => {
+  const bad = {
+    "group write": [(h) => chmodSync(h.args, 0o664), /dev\.args must be \S+'s with no group or other write \(it is uid \d+, mode 664\)$/],
+    symlink: [(h) => { put(`${h.args}.real`, ARGS.join("\n") + "\n", 0o644); rmSync(h.args); symlinkSync(`${h.args}.real`, h.args); }, /no regular file \/etc\/mosaic-stack\/dev\.args$/],
+    "unknown flag": [(h) => put(h.args, ["--send", ...ARGS].join("\n") + "\n", 0o644), /has --send before --, which case2-unit\.sh does not take$/],
+    "two copies": [(h) => put(h.args, ["--copy", COPY, ...ARGS].join("\n") + "\n", 0o644), /needs exactly one --copy before --, not 2$/],
+    "library profile": [(h) => put(h.args, ARGS.map((a) => (a === "factory" ? "library" : a)).join("\n") + "\n", 0o644), /has --profile 'library', not factory$/],
+    "another business": [(h) => put(h.args, ARGS.map((a, i) => (a === "mosaic-stack" && i < 14 ? "acme" : a)).join("\n") + "\n", 0o644), /is for business acme, not mosaic-stack$/],
+    "no tester socket": [(h) => put(h.args, ARGS.slice(0, -1).join("\n") + "\n", 0o644), /needs one bare --tester-socket after --$/],
+    "retired TCP": [(h) => put(h.args, [...ARGS.slice(0,-1),'--tester-port','7333'].join('\n')+'\n',0o644), /case1-accept.sh retires tester TCP; use --tester-socket$/],
+    "socket value": [(h) => put(h.args, [...ARGS,'7333'].join('\n')+'\n',0o644), /unknown serve flag 7333$/],
+    "duplicate socket": [(h) => put(h.args, [...ARGS,'--tester-socket'].join('\n')+'\n',0o644), /needs one bare --tester-socket after --$/],
+    "short copy": [(h) => put(h.args, ARGS.map((a) => (a === COPY ? "abc123" : a)).join("\n") + "\n", 0o644), /lacks a plain --user, --home, --business, --node, --claude or --copy$/],
+    "no file": [(h) => rmSync(h.args), /no regular file \/etc\/mosaic-stack\/dev\.args$/],
+  };
+  for (const [name, [fault, why]] of Object.entries(bad)) {
+    const h = host(t);
+    fault(h);
+    const r = run(h);
+    assert.equal(r.status, 2, `${name}: ${r.out}${r.err}`);
+    assert.match(r.err.trimEnd(), /^case1-accept: refusing: /, name);
+    assert.match(r.err.trimEnd(), why, name);
+    assert.equal(r.out, "", name);
+    assert.ok(!existsSync(join(h.hc, "calls.log")), name);
+  }
+});
+
+test("row 195 accept: usage errors and a run without --root as a user exit 2", (t) => {
+  const h = host(t);
+  let r = run(h, {}, ["--business", "mosaic-stack", "--args", "/etc/mosaic-stack/dev.args", "--node-pin", NODE_PIN, "--root", h.root]);
+  assert.equal(r.status, 2);
+  assert.match(r.err, /^usage: /);
+  r = run(h, {}, ["--business", "mosaic-stack", "--args", "/etc/mosaic-stack/dev.args", "--claude-pin", CLAUDE_PIN, "--node-pin", "24.1.0", "--root", h.root]);
+  assert.equal(r.status, 2);
+  r = run(h, {}, ["--business", "mosaic-stack", "--args", "/etc/mosaic-stack/dev.args", "--claude-pin", CLAUDE_PIN, "--node-pin", NODE_PIN]);
+  assert.equal(r.status, 2);
+  assert.equal(r.err, "case1-accept: refusing: run it as root\n");
+  assert.ok(!existsSync(join(h.hc, "calls.log")));
+});
+
+test("row 195 accept: every in-instance call goes through sudo -u mosaic -H env PATH=<node dir>:...", (t) => {
+  const h = host(t);
+  const r = run(h);
+  assert.equal(r.status, 0, r.out + r.err);
+  const sudo = calls(h, "sudo");
+  const asMosaic = sudo.filter((a) => a.startsWith("-u mosaic"));
+  const isolated = asMosaic.filter(a=>a.startsWith('-u mosaic -H env -i '));
+  assert.equal(isolated.length, 2);
+  for(const a of isolated) assert.ok(a.startsWith(`-u mosaic -H env -i HOME=${HOME} PATH=/opt/mosaic-stack/node-${NODE_PIN}/bin:/usr/local/bin:/usr/bin:/bin `),a);
+  for (const a of asMosaic.filter(a=>!isolated.includes(a))) assert.ok(a.startsWith(`${AS_MOSAIC} /`), a);
+  const cmds = asMosaic.filter(a=>!isolated.includes(a)).map((a) => a.slice(AS_MOSAIC.length + 1).split(" ")[0]);
+  assert.deepEqual([...new Set(cmds)].sort(), [CLI, PRECHECK, CLAUDE, NODE].sort());
+  assert.deepEqual(sudo.filter((a) => !a.startsWith("-u mosaic")).sort(),
+    ["-l -U localadmin", "-l -U mosaic", "-u jarvis /usr/bin/bwrap --version"]);
+  const talk = calls(h, "mosaic").filter((a) => a.startsWith("talk "));
+  assert.equal(talk.length, 1);
+  assert.match(talk[0], /^talk chief case1-accept-[0-9a-f]{12}: .* --business mosaic-stack --tester --wait 300$/);
+  assert.deepEqual(calls(h, "precheck"), ["--business mosaic-stack --profile factory"]);
+});
+
+test("row 195 accept: the host check runs with --check and never --enforce", (t) => {
+  const h = host(t);
+  run(h);
+  assert.deepEqual(calls(h, "hostcheck"), ["--check"]);
+});
@@ -0,0 +1,610 @@
+#!/usr/bin/env bash
+# Case 2 row C2-13a (design 9.3, 10 step 2c): render and install the two
+# system units a hub runs as, [email protected] (enabled as
+# mosaic-bus@<business>.service) and mosaic-webui.service, from the existing
+# templates, which it doesn't change.
+#
+#   case2-unit.sh --user NAME --home DIR --business ID --copy ID --node PATH
+#                 [--profile factory|library] [--pm] [--claude PATH]
+#                 -- SERVE FLAGS
+#
+# Root runs it from a root-owned checkout of the reviewed commit outside
+# <home>, never from the release, because <user> can write the release. It
+# writes both units under /etc/systemd/system as root:root 0644, runs
+# `systemctl daemon-reload`, enables both, then starts the bus and then the
+# Console (Q189). Both come back after a boot on their own. It never links
+# a unit file into place. Root only stats files under <home> and reads bounded
+# stdout from a config/target query run as the stack user through sudo. Root
+# never imports copy code. This adds sudo and GNU timeout to the installer
+# dependencies. The inner query supervisor runs after the uid drop: 5 s inside,
+# 7 s on root's wait. Fixed system Bash, setsid, sleep, timeout and head are
+# resolved and root-validated. Only the config query uses this supervisor.
+# It renders the default instance only.
+#
+# The library profile takes exactly these serve flags, each once:
+#   --port N (1..1023)  --business ID (the unit's)  --public-host NAME
+#   --auth-header HEADER  --allow-user ID  --send
+#   --proof-header NAME  --proof-file PATH
+# The factory profile takes --port N (1..1023) and --business ID, and an
+# optional bare --tester-socket marker. Retired tester TCP refuses. Only factory takes
+# --pm and --claude.
+#
+# On a re-install the installed units must equal the render in everything
+# but the copy id, and both must name one copy, so a re-pin or rollback
+# re-renders the pair together. A unit that was already running stays on its
+# old copy, since `systemctl start` leaves it alone; the script says so and
+# that the bus and Console must restart together, and restarts nothing.
+#
+# Test seams, for packages/cli/tests/case2-unit.test.mjs only:
+#   CASE2_UNIT_DIR        the unit directory, default /etc/systemd/system;
+#                         the root and root-owned checks apply only there
+#   CASE2_SYSTEMCTL       the systemctl command, default systemctl
+#   CASE2_GETENT          the getent command, default getent
+#   CASE2_BUS_TEMPLATE    default packages/cli/systemd/mosaic-bus.service.in
+#   CASE2_WEBUI_TEMPLATE  default packages/webui/systemd/mosaic-webui.service.in
+#
+# Exit 0 done, 1 refused, 4 usage.
+set -euo pipefail
+REPO="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+DEFAULT_UNIT_DIR=/etc/systemd/system
+UNIT_DIR="${CASE2_UNIT_DIR:-$DEFAULT_UNIT_DIR}"
+SYSTEMCTL="${CASE2_SYSTEMCTL:-systemctl}"
+GETENT="${CASE2_GETENT:-getent}"
+BUS_TEMPLATE="${CASE2_BUS_TEMPLATE:-$REPO/packages/cli/systemd/mosaic-bus.service.in}"
+WEBUI_TEMPLATE="${CASE2_WEBUI_TEMPLATE:-$REPO/packages/webui/systemd/mosaic-webui.service.in}"
+[email protected]
+WEBUI_UNIT=mosaic-webui.service
+
+usage() { echo 'usage: case2-unit.sh --user NAME --home DIR --business ID --copy ID --node PATH [--profile factory|library] [--pm] [--claude PATH] -- SERVE FLAGS' >&2; exit 4; }
+die() { echo "case2-unit: $*" >&2; exit 1; }
+# A value the unit carries as itself: no space, %, $, quote, backslash, & or |.
+plain() { case "$1" in *[!A-Za-z0-9/._+-]*) return 1 ;; esac; }
+abs_plain() {
+    case "$1" in /*) ;; *) die "$2 must be an absolute path: $1" ;; esac
+    plain "$1" || die "$2 contains a character the unit cannot carry: $1"
+    case "$1/" in */./*|*/../*|?*//*) die "$2 must be a normalized path: $1" ;; esac
+    [ "$1" = / ] || [ "${1%/}" = "$1" ] || die "$2 must not end in /: $1"
+}
+
+PROFILE=library USER_NAME='' HOME_DIR='' BUSINESS='' COPY_ID='' NODE='' PM=0 CLAUDE='' CLAUDE_SET=0
+while [ $# -gt 0 ]; do
+    case "$1" in
+        --profile|--user|--home|--business|--copy|--node|--claude)
+            [ $# -ge 2 ] || usage
+            case "$1" in
+                --profile) PROFILE="$2" ;; --user) USER_NAME="$2" ;; --home) HOME_DIR="$2" ;;
+                --business) BUSINESS="$2" ;; --copy) COPY_ID="$2" ;; --node) NODE="$2" ;;
+                --claude) CLAUDE="$2"; CLAUDE_SET=1 ;;
+            esac
+            shift 2 ;;
+        --pm) PM=1; shift ;;
+        --) shift; break ;;
+        *) usage ;;
+    esac
+done
+SERVE=("$@")
+[ -n "$USER_NAME" ] && [ -n "$HOME_DIR" ] && [ -n "$BUSINESS" ] && [ -n "$COPY_ID" ] && [ -n "$NODE" ] || usage
+case "$PROFILE" in factory|library) ;; *) die "--profile must be factory or library: $PROFILE" ;; esac
+if [ "$PROFILE" = library ]; then
+    [ "$PM" = 0 ] || die "the library profile refuses --pm"
+    [ "$CLAUDE_SET" = 0 ] || die "the library profile refuses --claude"
+fi
+
+if [ "$UNIT_DIR" = "$DEFAULT_UNIT_DIR" ]; then
+    [ "$(id -u)" = 0 ] || die "writing $DEFAULT_UNIT_DIR needs root"
+fi
+
+# The user, its uid, primary group and home, from the passwd database.
+[[ "$USER_NAME" =~ ^[a-z_][a-z0-9_-]{0,31}$ ]] || die "--user must be a user name: $USER_NAME"
+PW="$("$GETENT" passwd "$USER_NAME")" || die "no user $USER_NAME in the passwd database"
+IFS=: read -r _ _ USER_UID USER_GID _ PW_HOME _ <<<"$PW"
+[[ "$USER_UID" =~ ^[0-9]+$ ]] && [ "$USER_UID" -ne 0 ] || die "--user must not be root: $USER_NAME"
+abs_plain "$HOME_DIR" '--home'
+[ "$HOME_DIR" = "$PW_HOME" ] || die "--home $HOME_DIR is not $USER_NAME's home in the passwd database ($PW_HOME)"
+GR="$("$GETENT" group "$USER_GID")" || die "no group $USER_GID in the group database"
+GROUP="${GR%%:*}"
+[[ "$GROUP" =~ ^[a-z_][a-z0-9_-]{0,31}$ ]] || die "the primary group of $USER_NAME is not a group name: $GROUP"
+
+case "$BUSINESS" in [a-z0-9]*) ;; *) die "--business must be a business id: $BUSINESS" ;; esac
+case "$BUSINESS" in *[!a-z0-9._-]*) die "--business must be a business id: $BUSINESS" ;; esac
+[ "${#BUSINESS}" -le 64 ] || die "--business must be a business id: $BUSINESS"
+
+# The copy: copy_root's rule (scripts/stack-copy.sh:8, :22), under <home>.
+COPIES="$HOME_DIR/.local/share/mosaic-stack/copies"
+[[ "$COPY_ID" =~ ^[0-9a-f]{40}$ ]] || die "--copy must be a full 40-character lower-case commit id: $COPY_ID"
+COPY="$COPIES/$COPY_ID"
+[ -d "$COPY" ] && [ ! -L "$COPY" ] || die "no copy directory $COPY"
+[ -f "$COPY/scripts/mosaic" ] || die "no copy $COPY_ID in $COPIES: $COPY/scripts/mosaic is missing"
+
+# Owned by root and writable by no one else, the file and every directory above it.
+root_only() {
+    local p="$1" what="$2" owner mode
+    while :; do
+        owner="$(stat -c '%u' -- "$p")" || die "cannot stat $p"
+        mode="$(stat -c '%a' -- "$p")" || die "cannot stat $p"
+        [ "$owner" = 0 ] || die "$what: $p is not owned by root"
+        (( (8#$mode & 8#022) == 0 )) || die "$what: $p is writable by its group or others"
+        [ "$p" = / ] && break
+        p="$(dirname -- "$p")"
+    done
+}
+
+# --node: an absolute path to a root-owned regular file outside <home>.
+abs_plain "$NODE" '--node'
+case "$NODE/" in "$HOME_DIR"/*) die "--node must be outside $HOME_DIR: $NODE" ;; esac
+[ ! -L "$NODE" ] || die "--node must not be a symlink; pass its target: $NODE"
+[ -f "$NODE" ] && [ -x "$NODE" ] || die "--node must be an executable regular file: $NODE"
+root_only "$NODE" '--node'
+
+# --claude follows the --node rule, so nothing running as <user> can replace
+# the binary the bus runs.
+if [ "$CLAUDE_SET" = 1 ]; then
+    abs_plain "$CLAUDE" '--claude'
+    case "$CLAUDE/" in "$HOME_DIR"/*) die "--claude must be outside $HOME_DIR: $CLAUDE" ;; esac
+    [ ! -L "$CLAUDE" ] || die "--claude must not be a symlink; pass its target: $CLAUDE"
+    [ -f "$CLAUDE" ] && [ -x "$CLAUDE" ] || die "--claude must be an executable regular file: $CLAUDE"
+    root_only "$CLAUDE" '--claude'
+fi
+
+# The checkout the templates come from, when installing for real.
+if [ "$UNIT_DIR" = "$DEFAULT_UNIT_DIR" ]; then
+    case "$REPO/" in "$HOME_DIR"/*) die "run this from a root-owned checkout outside $HOME_DIR, not $REPO" ;; esac
+    root_only "$BUS_TEMPLATE" 'bus template'
+    root_only "$WEBUI_TEMPLATE" 'Console template'
+fi
+
+# Row253: bounded unprivileged metadata, parsed by root without running copy code.
+# row253-supervisor-begin
+IFS= read -r -d '' TESTER_SUPERVISOR <<'MOSAIC_TESTER_SUPERVISOR' || :
+set +m
+seconds="$1" setsid_bin="$2" sleep_bin="$3"; shift 3
+child="" timer="" verified=0
+stat_fields() {
+    local pid="$1" raw rest
+    if ! raw="$(<"/proc/$pid/stat")" 2>/dev/null; then
+        [ -e "/proc/$pid/stat" ] && return 1
+        return 3
+    fi
+    [ -n "$raw" ] || { [ -e "/proc/$pid/stat" ] && return 1; return 3; }
+    rest="${raw##*) }"
+    [ "$rest" != "$raw" ] || return 1
+    read -r ST_STATE ST_PARENT ST_GROUP ST_SESSION _ <<< "$rest"
+    [[ "$ST_STATE" =~ ^[A-Za-z]$ && "$ST_SESSION" =~ ^[0-9]+$ && "$ST_GROUP" =~ ^[0-9]+$ ]]
+}
+clock_cs() {
+    local boot spare
+    read -r boot spare < /proc/uptime || return 1
+    [[ "$boot" =~ ^([0-9]+)\.([0-9]{2})$ ]] || return 1
+    CLOCK_CS=$((10#${BASH_REMATCH[1]} * 100 + 10#${BASH_REMATCH[2]}))
+}
+clean_session() {
+    local entry pid rc live until
+    clock_cs || return 1
+    until=$((CLOCK_CS + 25))
+    while :; do
+        live=0
+        for entry in /proc/[0-9]*/stat; do
+            pid="${entry%/stat}"; pid="${pid##*/}"
+            rc=0; stat_fields "$pid" || rc=$?
+            [ "$rc" != 3 ] || continue
+            [ "$rc" = 0 ] || return 1
+            [ "$ST_SESSION" = "$child" ] || continue
+            case "$ST_STATE" in Z|X) continue ;; esac
+            live=1
+            if ! kill -KILL "$pid" 2>/dev/null; then
+                rc=0; stat_fields "$pid" || rc=$?
+                [ "$rc" = 3 ] || { [ "$rc" = 0 ] && { [ "$ST_STATE" = Z ] || [ "$ST_STATE" = X ]; }; } || return 1
+            fi
+        done
+        [ "$live" != 0 ] || return 0
+        clock_cs || return 1
+        [ "$CLOCK_CS" -lt "$until" ] || return 1
+        "$sleep_bin" 0.01
+    done
+}
+finish() {
+    local rc="$?"
+    trap - EXIT HUP INT TERM
+    if [ "$verified" = 1 ]; then
+        clean_session || rc=86
+    elif [ -n "$child" ]; then
+        kill -KILL "$child" 2>/dev/null || :
+    fi
+    [ -z "$child" ] || wait "$child" 2>/dev/null || :
+    if [ -n "$timer" ]; then kill -KILL "$timer" 2>/dev/null || :; wait "$timer" 2>/dev/null || :; fi
+    exit "$rc"
+}
+trap finish EXIT
+trap 'exit 88' HUP INT TERM
+"$sleep_bin" "$seconds" & timer=$!
+"$setsid_bin" "$@" & child=$!
+for ((attempt=0; attempt<100; attempt++)); do
+    rc=0; stat_fields "$child" || rc=$?
+    [ "$rc" = 0 ] || exit 85
+    if [ "$ST_SESSION" = "$child" ]; then verified=1; break; fi
+    kill -0 "$timer" 2>/dev/null || exit 81
+    "$sleep_bin" 0.002
+done
+[ "$verified" = 1 ] || exit 85
+while kill -0 "$child" 2>/dev/null; do
+    kill -0 "$timer" 2>/dev/null || exit 81
+    "$sleep_bin" 0.01
+done
+kill -0 "$timer" 2>/dev/null || exit 81
+rc=0; wait "$child" || rc=$?
+[ "$rc" = 0 ] || exit 87
+exit 0
+MOSAIC_TESTER_SUPERVISOR
+# row253-supervisor-end
+
+tester_tools() {
+    local input target p st magic
+    TS_BASH="" TS_SETSID="" TS_SLEEP="" TS_TIMEOUT="" TS_HEAD=""
+    for input in /bin/bash /usr/bin/setsid /usr/bin/sleep /usr/bin/timeout /usr/bin/head; do
+        target="$(realpath -e -- "$input" 2>/dev/null)" || return 1
+        case "$target" in /home/*|/root/*|/run/user/*) return 1 ;; esac
+        [ -f "$target" ] && [ -x "$target" ] && [ ! -L "$target" ] || return 1
+        p="$target"
+        while :; do
+            st="$(stat -c '%u %a' -- "$p" 2>/dev/null)" || return 1
+            [ "${st% *}" = 0 ] && [[ "${st#* }" =~ ^[0-7]{3,4}$ ]] && (( (8#${st#* } & 8#022) == 0 )) || return 1
+            [ "$p" != / ] || break
+            p="${p%/*}"; [ -n "$p" ] || p=/
+        done
+        magic="$(/usr/bin/od -An -tx1 -N4 -- "$target" 2>/dev/null | tr -d ' \n')"
+        [ "$magic" = 7f454c46 ] || return 1
+        case "$input" in
+            /bin/bash) TS_BASH="$target" ;; /usr/bin/setsid) TS_SETSID="$target" ;;
+            /usr/bin/sleep) TS_SLEEP="$target" ;; /usr/bin/timeout) TS_TIMEOUT="$target" ;;
+            /usr/bin/head) TS_HEAD="$target" ;;
+        esac
+    done
+}
+tester_capture_reason() {
+    case "$1" in
+        81) echo inner-timeout ;; 82) echo outer-timeout ;; 83) echo output-limit ;;
+        84) echo supervisor-tools ;; 85) echo inner-session ;; 86) echo inner-cleanup ;;
+        *) echo inner-command ;;
+    esac
+}
+tester_capture() (
+    local inner="$1" outer="$2" maximum="$3" user="$4" home="$5" path="$6" file notice child="" rc=0; shift 6
+    tester_tools || exit 84
+    file="$(mktemp)" || exit 88
+    notice="$(mktemp)" || { rm -f -- "$file"; exit 88; }
+    trap 'if [ -n "$child" ]; then kill -KILL -- "-$child" 2>/dev/null || :; wait "$child" 2>/dev/null || :; fi; rm -f -- "$file" "$notice"' EXIT
+    trap 'exit 88' HUP INT TERM
+    LC_ALL=C "$TS_TIMEOUT" --verbose --signal=KILL "${outer}s" "$TS_BASH" -c '
+        set -o pipefail
+        maximum="$1"; head_bin="$2"; shift 2
+        "$@" 2>/dev/null | "$head_bin" -c "$((maximum + 1))"
+    ' -- "$maximum" "$TS_HEAD" sudo -u "$user" -H env -i "HOME=$home" "PATH=$path" "$TS_BASH" -c "$TESTER_SUPERVISOR" -- "$inner" "$TS_SETSID" "$TS_SLEEP" "$@" > "$file" 2> "$notice" &
+    child=$!
+    wait "$child" 2>/dev/null || rc=$?
+    kill -KILL -- "-$child" 2>/dev/null || :
+    # Only GNU timeout and the trusted head can write this root-side channel.
+    if [ "$rc" = 137 ] && [[ "$(<"$notice")" == *': sending signal KILL to command '* ]]; then exit 82; fi
+    [ "$(wc -c < "$file")" -le "$maximum" ] || exit 83
+    [ "$rc" = 0 ] || { case "$rc" in 81|85|86|87|88) exit "$rc" ;; *) exit 87 ;; esac; }
+    cat -- "$file"
+)
+
+TESTER_QUERY='import {readFileSync} from "node:fs";import {pathToFileURL} from "node:url";const m=await import(pathToFileURL(process.argv[1]).href);const s=m.loadSystem();console.log(JSON.stringify({dataRoot:s.dataRoot,socket:readFileSync(process.argv[2],"utf8").includes("MOSAIC_TESTER_SOCKET_V1")}));'
+tester_facts() {
+    local LC_ALL=C pattern='^\{"dataRoot":"([A-Za-z0-9/._@+-]+)","socket":(true|false)\}$'
+    [[ "$1" =~ $pattern ]] || return 1
+    TS_DATA="${BASH_REMATCH[1]}" TS_MARKED="${BASH_REMATCH[2]}"
+}
+tester_location() {
+    local LC_ALL=C data="$1" home="$2" uid="$3" prefix="$4" part at="" st
+    TS_REASON="" TS_SOCKET=""
+    case "$data" in /*) ;; *) TS_REASON=not-absolute; return 1 ;; esac
+    case "$data" in *[!A-Za-z0-9/._@+-]*) TS_REASON=not-ascii; return 1 ;; esac
+    case "$data/" in */./*|*/../*|*//* ) TS_REASON=not-normalized; return 1 ;; esac
+    [ "${data%/}" = "$data" ] || { TS_REASON=not-normalized; return 1; }
+    case "$data" in "$home"/*) ;; *) TS_REASON=outside-home; return 1 ;; esac
+    case "$home/" in /home/*|/root/*|/run/user/*|/tmp/*|/var/tmp/*) TS_REASON=protected-private-home; return 1 ;; esac
+    TS_SOCKET="$data/console/tester.sock"
+    [ "${#TS_SOCKET}" -le 107 ] || { TS_REASON=too-long; return 1; }
+    local -a parts
+    IFS=/ read -r -a parts <<< "$data"
+    for part in "${parts[@]}"; do
+        [ -n "$part" ] || continue
+        at="$at/$part"
+        [ ! -L "$prefix$at" ] || { TS_REASON=symlink-component; return 1; }
+        if [ -e "$prefix$at" ]; then
+            [ -d "$prefix$at" ] || { TS_REASON=component-type; return 1; }
+        fi
+    done
+    local parent="$prefix$data/console"
+    [ ! -L "$parent" ] || { TS_REASON=symlink-parent; return 1; }
+    if [ -e "$parent" ]; then
+        [ -d "$parent" ] || { TS_REASON=parent-type; return 1; }
+        st="$(stat -c '%u %a' -- "$parent")" || { TS_REASON=parent-stat; return 1; }
+        [ "${st% *}" = "$uid" ] || { TS_REASON=parent-owner; return 1; }
+        [[ "${st#* }" =~ ^[0-7]{3,4}$ ]] && (( (8#${st#* } & 8#077) == 0 )) || { TS_REASON=parent-mode; return 1; }
+    fi
+}
+# tester-location-end
+
+# The serve flags, checked as scripts/webui-service.sh serve_flags checks
+# them (:201-264), and kept in the order given. That script compares the
+# proof file's owner to `id -u`, which is root here, so this copy has its own.
+serve_flags() {
+    local -A seen=()
+    local flags='' name value
+    local port='' public_host='' auth_header='' allow_user='' proof_header='' proof_file='' tester_socket=0
+    local i=0 n=${#SERVE[@]}
+    while [ "$i" -lt "$n" ]; do
+        name="${SERVE[$i]}"
+        case "$name" in
+            --tester-port) die "case2-unit.sh retires tester TCP; use --tester-socket" ;;
+            --tester-socket) [ "$PROFILE" = factory ] || die "the library profile refuses --tester-socket" ;;
+            --checkout) die "refusing --checkout: Case 2 has no queue panel" ;;
+            --board) die "refusing --board: Case 2 runs no control board" ;;
+            --sso) die "refusing --sso: the Console signs people in through the proxy, with the preview set and the proof pair (Q175 phase 2 is a follow-up)" ;;
+            --port|--business) ;;
+            --public-host|--auth-header|--allow-user|--proof-header|--proof-file|--send)
+                [ "$PROFILE" = library ] || die "the factory profile refuses $name: its host has no proxy" ;;
+            *) die "unknown serve flag: $name" ;;
+        esac
+        [ -z "${seen[$name]:-}" ] || die "serve flag $name given twice"
+        seen[$name]=1
+        if [ "$name" = --tester-socket ]; then tester_socket=1; flags="$flags --tester-socket"; i=$((i + 1)); continue; fi
+        if [ "$name" = --send ]; then flags="$flags --send"; i=$((i + 1)); continue; fi
+        [ $((i + 1)) -lt "$n" ] || die "serve flag $name needs a value"
+        value="${SERVE[$((i + 1))]}"
+        case "$name" in
+            --port) port="$value"
+                [[ "$port" =~ ^[1-9][0-9]{0,3}$ ]] && [ "$port" -le 1023 ] || die "--port must be 1..1023, so only the unit's capability can bind it: $port" ;;
+            --business) [ "$value" = "$BUSINESS" ] || die "serve --business $value is not the unit's business $BUSINESS" ;;
+            --public-host) public_host="$value"
+                case "$value" in [A-Za-z0-9]*) ;; *) die "public host must be a hostname, no port or scheme: $value" ;; esac
+                case "$value" in *[!A-Za-z0-9.-]*) die "public host must be a hostname, no port or scheme: $value" ;; esac ;;
+            --auth-header) auth_header="$value"
+                case "$value" in [A-Za-z0-9]*) ;; *) die "auth header must be a header name: $value" ;; esac
+                case "$value" in *[!A-Za-z0-9-]*) die "auth header must be a header name: $value" ;; esac ;;
+            --allow-user) allow_user="$value"
+                case "$value" in [A-Za-z0-9]*) ;; *) die "allowed user must start with a letter or digit: $value" ;; esac
+                case "$value" in *[!A-Za-z0-9._@+-]*) die "allowed user contains a character the unit cannot carry: $value" ;; esac ;;
+            --proof-header) proof_header="$value"
+                [[ "$value" =~ ^[A-Za-z0-9][A-Za-z0-9-]{0,63}$ ]] || die "invalid proxy proof header" ;;
+            --proof-file) proof_file="$value" ;;
+        esac
+        flags="$flags $name $value"
+        i=$((i + 2))
+    done
+    local required=(--port --business)
+    [ "$PROFILE" = factory ] || required+=(--public-host --auth-header --allow-user --send --proof-header --proof-file)
+    for name in "${required[@]}"; do
+        [ -n "${seen[$name]:-}" ] || die "serve flag $name is required"
+    done
+    if [ "$PROFILE" = factory ]; then
+        if [ "$tester_socket" = 1 ]; then
+            local query
+            query="$(tester_capture 5 7 4096 "$USER_NAME" "$HOME_DIR" "$UNIT_PATH" "$NODE" --input-type=module -e "$TESTER_QUERY" "$COPY/packages/cli/src/config.mjs" "$COPY/packages/webui/src/cli.mjs")" || die "tester config query $(tester_capture_reason "$?")"
+            tester_facts "$query" || die "tester config query has invalid facts"
+            [ "$TS_MARKED" = true ] || die "the target does not support --tester-socket"
+            tester_location "$TS_DATA" "$HOME_DIR" "$USER_UID" "" || die "tester path refuses $TS_REASON"
+        fi
+        echo "${flags# }"; return 0
+    fi
+    # Lead decision 101: the uid header carries the Authentik uid.
+    if [ "${auth_header,,}" = x-authentik-uid ] && ! [[ "$allow_user" =~ ^[0-9a-f]{64}$ ]]; then
+        die "with --auth-header $auth_header the allowed user must be an Authentik uid, 64 lower-case hex characters (lead decision 101): $allow_user"
+    fi
+    case "${proof_header,,}" in host|origin|x-mosaic-tester|"${auth_header,,}") die "proxy proof header must differ from Host, Origin, tester and auth headers" ;; esac
+    # The proof file: metadata only, never opened (design 9.3).
+    local secrets="$HOME_DIR/.config/mosaic-dev/secrets" real owner mode
+    abs_plain "$proof_file" 'proxy proof file'
+    [ ! -L "$proof_file" ] || die "proxy proof file must not be a symlink: $proof_file"
+    [ -f "$proof_file" ] || die "proxy proof file must be a regular file: $proof_file"
+    real="$(realpath -e -- "$proof_file")" || die "cannot resolve proxy proof file: $proof_file"
+    [ "$real" = "$proof_file" ] || die "proxy proof file path must have no symlink in it: $proof_file"
+    case "$proof_file" in "$secrets"/*) ;; *) die "proxy proof file must be under $secrets, outside the data root: $proof_file" ;; esac
+    owner="$(stat -c '%u' -- "$proof_file")" || die "cannot stat proxy proof file"
+    mode="$(stat -c '%a' -- "$proof_file")" || die "cannot stat proxy proof file"
+    [ "$owner" = "$USER_UID" ] || die "proxy proof file must be owned by $USER_NAME (uid $USER_UID): $proof_file"
+    [ "$mode" = 600 ] || [ "$mode" = 400 ] || die "proxy proof file must be mode 0600 or 0400, not $mode: $proof_file"
+    echo "${flags# }"
+}
+# PATH: the node's directory first, then the default list without it. Unlike
+# scripts/webui-service.sh:303-305 this always puts node's directory first,
+# so the bus's `exec node` (scripts/mosaic) finds the same node.
+NODE_DIR="$(dirname -- "$NODE")"
+UNIT_PATH="$NODE_DIR"
+for d in /usr/local/bin /usr/bin /bin; do [ "$d" = "$NODE_DIR" ] || UNIT_PATH="$UNIT_PATH:$d"; done
+FLAGS="$(serve_flags)" || exit 1
+
+HARDENING="ProtectSystem=strict
+ReadWritePaths=$HOME_DIR
+ProtectHome=yes
+PrivateTmp=yes"
+CAPS="AmbientCapabilities=CAP_NET_BIND_SERVICE
+CapabilityBoundingSet=CAP_NET_BIND_SERVICE"
+# The default instance, as scripts/instance.sh:85-107 renders it: no
+# MOSAIC_CONFIG line, and the session env under %h, which becomes <home>.
+SESSION_ENV='%h/.config/mosaic-dev/secrets/claude-session.env'
+ENV_FILE="-$HOME_DIR/.config/mosaic-dev/secrets/claude-session.env"
+PM_FLAGS=''
+[ "$PM" = 0 ] || PM_FLAGS=' --pm'
+CLAUDE_ENV=''
+[ "$CLAUDE_SET" = 0 ] || CLAUDE_ENV="Environment=MOSAIC_CLAUDE_BIN=$CLAUDE"
+
+# One unit from its template. kind is bus or webui.
+render() {
+    local kind="$1" template="$2" text tokens
+    [ -f "$template" ] && [ ! -L "$template" ] || die "template missing or not a regular file: $template"
+    text="$(sed -e "s|@REPO@|$COPY|g" -e "s|@PATH@|$UNIT_PATH|g" -e "s|@NODE@|$NODE|g" \
+        -e "s|@PM_FLAGS@|$PM_FLAGS|g" -e "s|^@CLAUDE_ENV@\$|$CLAUDE_ENV|" \
+        -e '/^@CONFIG_ENV@$/d' -e "s|@SESSION_ENV@|$SESSION_ENV|g" \
+        -e "s|%h|$HOME_DIR|g" -- "$template")"
+    # Checked before @FLAGS@ goes in, since an allowed user may hold @.
+    tokens="$(printf '%s\n' "$text" | grep -oE '@[A-Z_]+@' || true)"
+    if [ "$kind" = webui ]; then
+        [ "$tokens" = @FLAGS@ ] || die "$template: a token other than one @FLAGS@ is left after the render: $(echo $tokens)"
+        text="${text//@FLAGS@/$FLAGS}"
+    else
+        [ -z "$tokens" ] || die "$template: a token is left after the render: $(echo $tokens)"
+    fi
+    if printf '%s\n' "$text" | grep -q '%h'; then die "$template: %h is left after the render"; fi
+    local add="User=$USER_NAME\nGroup=$GROUP\n${HARDENING//$'\n'/\\n}\n"
+    [ "$kind" = bus ] || add="$add${CAPS//$'\n'/\\n}\n"
+    # The added lines go at the end of [Service], before its trailing blank
+    # lines. In [Install], WantedBy=multi-user.target replaces
+    # WantedBy=default.target in both units, so both start at boot (Q189).
+    printf '%s\n' "$text" | awk -v add="$add" '
+        function blanks_out() { for (; blanks > 0; blanks--) print "" }
+        /^\[.*\]$/ {
+            if (sec == "[Service]") printf "%s", add
+            sec = $0
+            blanks_out(); print; next
+        }
+        $0 == "" { blanks++; next }
+        { blanks_out() }
+        sec == "[Install]" && $0 == "WantedBy=default.target" { $0 = "WantedBy=multi-user.target" }
+        { print }
+        END { if (sec == "[Service]") printf "%s", add; blanks_out() }'
+}
+
+# The unit's settings as section<TAB>key<TAB>value, one per line, keys
+# trimmed as systemd trims them. A continued line refuses, so no setting
+# hides in one.
+settings() {
+    awk '
+        { sub(/^[ \t]+/, ""); sub(/[ \t]+$/, "") }
+        $0 == "" || /^[#;]/ { next }
+        /\\$/ { print "CONTINUED"; exit }
+        /^\[.*\]$/ { sec = $0; next }
+        {
+            i = index($0, "="); if (i == 0) { print "NOKEY\t" $0; next }
+            k = substr($0, 1, i - 1); v = substr($0, i + 1)
+            sub(/[ \t]+$/, "", k); sub(/^[ \t]+/, "", v)
+            print sec "\t" k "\t" v
+        }'
+}
+
+# Refuses unless one unit's fixed lines hold. what names the unit in messages,
+# copy is the copy directory it should run from.
+check_unit() {
+    local kind="$1" text="$2" what="$3" copy="$4" s
+    s="$(printf '%s\n' "$text" | settings)"
+    ! printf '%s\n' "$s" | grep -qx CONTINUED || die "$what: a line continues onto the next"
+    ! printf '%s\n' "$s" | grep -q '^NOKEY' || die "$what: a line is neither a section, a comment nor a setting"
+    # %h in a system unit is root's home, not <user>'s.
+    ! printf '%s\n' "$text" | grep -q '%h' || die "$what: %h is left; a system unit reads it as root's home"
+    local key
+    for key in RestrictNamespaces PrivateUsers SystemCallFilter PermissionsStartOnly; do
+        ! printf '%s\n' "$s" | awk -F'\t' -v k="$key" '$2 == k { found = 1 } END { exit !found }' \
+            || die "$what: refusing $key=, which the hub's units must not hold"
+    done
+    # An Exec*= value whose leading prefix characters hold + or ! runs with
+    # full privileges, whatever User= says.
+    local bad
+    bad="$(printf '%s\n' "$s" | awk -F'\t' '$2 ~ /^Exec/ { p = $3; sub(/[^-@:+!].*$/, "", p); if (p ~ /[+!]/) print $2 "=" $3 }')"
+    [ -z "$bad" ] || die "$what: refusing an Exec line that runs with full privileges: $bad"
+    # The fixed lines, each exactly once, in [Service].
+    one() {
+        local k="$1" v="$2" got
+        got="$(printf '%s\n' "$s" | awk -F'\t' -v k="$k" '$2 == k { print $1 "\t" $3 }')"
+        [ "$got" = "[Service]	$v" ] || die "$what: $k= must be exactly once in [Service], as $k=$v"
+    }
+    none() {
+        ! printf '%s\n' "$s" | awk -F'\t' -v k="$1" '$2 == k { found = 1 } END { exit !found }' || die "$what: refusing $1=, which this unit must not hold"
+    }
+    one User "$USER_NAME"
+    one Group "$GROUP"
+    one WorkingDirectory "$copy"
+    # Environment= lines: PATH, and MOSAIC_CLAUDE_BIN only with --claude.
+    local envs want_envs="[Service]	PATH=$UNIT_PATH"
+    [ "$kind" = webui ] || [ -z "$CLAUDE_ENV" ] || want_envs="$want_envs
+[Service]	MOSAIC_CLAUDE_BIN=$CLAUDE"
+    envs="$(printf '%s\n' "$s" | awk -F'\t' '$2 == "Environment" { print $1 "\t" $3 }')"
+    [ "$envs" = "$want_envs" ] || die "$what: the Environment= lines must be exactly: $(printf '%s' "$want_envs" | cut -f2 | tr '\n' ' ')"
+    one NoNewPrivileges yes
+    one ProtectSystem strict
+    one ReadWritePaths "$HOME_DIR"
+    one ProtectHome yes
+    one PrivateTmp yes
+    local order
+    order="$(printf '%s\n' "$s" | awk -F'\t' '$2 ~ /^(ProtectSystem|ReadWritePaths|ProtectHome|PrivateTmp)$/ { printf "%s ", $2 }')"
+    [ "$order" = "ProtectSystem ReadWritePaths ProtectHome PrivateTmp " ] || die "$what: the hardening lines must be in the order ProtectSystem, ReadWritePaths, ProtectHome, PrivateTmp"
+    local wanted
+    wanted="$(printf '%s\n' "$s" | awk -F'\t' '$2 == "WantedBy" { print $1 "\t" $3 }')"
+    [ "$wanted" = "[Install]	multi-user.target" ] || die "$what: WantedBy= must be exactly once, as WantedBy=multi-user.target"
+    if [ "$kind" = bus ]; then
+        one ExecStart "$copy/scripts/mosaic bus start %i$PM_FLAGS"
+        one EnvironmentFile "$ENV_FILE"
+        none AmbientCapabilities
+        none CapabilityBoundingSet
+    else
+        one ExecStart "$NODE $copy/packages/webui/src/cli.mjs serve $FLAGS"
+        none EnvironmentFile
+        one AmbientCapabilities CAP_NET_BIND_SERVICE
+        one CapabilityBoundingSet CAP_NET_BIND_SERVICE
+    fi
+}
+
+BUS_TEXT="$(render bus "$BUS_TEMPLATE")" || exit 1
+WEBUI_TEXT="$(render webui "$WEBUI_TEMPLATE")" || exit 1
+check_unit bus "$BUS_TEXT" "rendered $BUS_UNIT" "$COPY"
+check_unit webui "$WEBUI_TEXT" "rendered $WEBUI_UNIT" "$COPY"
+
+# A re-install: each installed unit passes the same checks, both name one
+# copy, and each equals the render once its copy id is the new one.
+[ -d "$UNIT_DIR" ] && [ ! -L "$UNIT_DIR" ] || die "no unit directory $UNIT_DIR"
+installed_ids=''
+for pair in "bus:$BUS_UNIT:BUS_TEXT" "webui:$WEBUI_UNIT:WEBUI_TEXT"; do
+    IFS=: read -r kind name var <<<"$pair"
+    path="$UNIT_DIR/$name"
+    [ ! -L "$path" ] || die "refusing: $path is a symlink"
+    [ -e "$path" ] || continue
+    [ -f "$path" ] || die "refusing: $path is not a regular file"
+    text="$(cat -- "$path")"
+    old="$(printf '%s\n' "$text" | settings | awk -F'\t' -v c="$COPIES/" '$2 == "WorkingDirectory" && index($3, c) == 1 { print substr($3, length(c) + 1) }')"
+    [[ "$old" =~ ^[0-9a-f]{40}$ ]] || die "installed $path names no copy under $COPIES"
+    check_unit "$kind" "$text" "installed $path" "$COPIES/$old"
+    [ "$text" = "$(printf '%s\n' "${!var}" | sed "s|$COPY|$COPIES/$old|g")" ] \
+        || die "installed $path differs from the render in more than the copy id; the node path, serve flags, --pm and --claude must equal the installed ones"
+    installed_ids="$installed_ids $old"
+done
+read -r -a ids <<<"$installed_ids"
+[ "${#ids[@]}" -lt 2 ] || [ "${ids[0]}" = "${ids[1]}" ] || die "the installed units name different copies, ${ids[0]} and ${ids[1]}"
+
+# `systemctl start` leaves a running unit on the copy it started from, so
+# note which units run before the write (row 195 owns the restart).
+BUS_NAME="mosaic-bus@$BUSINESS.service"
+running=''
+for name in "$BUS_NAME" "$WEBUI_UNIT"; do
+    if "$SYSTEMCTL" is-active --quiet "$name"; then running="$running $name"; fi
+done
+
+# Write each unit to a temp file in the unit directory, then rename.
+write_unit() {
+    local name="$1" text="$2" tmp
+    tmp="$(mktemp "$UNIT_DIR/.case2-unit.XXXXXX")"
+    printf '%s\n' "$text" >"$tmp"
+    chmod 0644 "$tmp"
+    [ "$(id -u)" != 0 ] || chown root:root "$tmp"
+    mv -fT -- "$tmp" "$UNIT_DIR/$name"
+}
+write_unit "$BUS_UNIT" "$BUS_TEXT"
+write_unit "$WEBUI_UNIT" "$WEBUI_TEXT"
+# Enable both, then start the bus, then the Console (design 10 step 2c).
+# serve calls the bus per request, so the units carry no After= or Wants=.
+"$SYSTEMCTL" daemon-reload || die "systemctl daemon-reload failed; the units are written, nothing is enabled or started"
+"$SYSTEMCTL" enable "$BUS_NAME" "$WEBUI_UNIT" || die "systemctl enable $BUS_NAME $WEBUI_UNIT failed; nothing is started"
+"$SYSTEMCTL" start "$BUS_NAME" || die "systemctl start $BUS_NAME failed; the Console is not started"
+"$SYSTEMCTL" start "$WEBUI_UNIT" || die "systemctl start $WEBUI_UNIT failed; the bus is running"
+if [ -z "$running" ]; then
+    echo "case2-unit: wrote $UNIT_DIR/$BUS_UNIT and $UNIT_DIR/$WEBUI_UNIT from copy $COPY_ID; enabled and started $BUS_NAME, then $WEBUI_UNIT"
+    exit 0
+fi
+echo "case2-unit: wrote $UNIT_DIR/$BUS_UNIT and $UNIT_DIR/$WEBUI_UNIT from copy $COPY_ID and enabled both"
+for name in "$BUS_NAME" "$WEBUI_UNIT"; do
+    case " $running " in
+        *" $name "*) echo "case2-unit: $name was already running, so it is still on ${ids[0]:+copy }${ids[0]:-the copy it started from}, not copy $COPY_ID" ;;
+        *) echo "case2-unit: started $name on copy $COPY_ID" ;;
+    esac
+done
+echo "case2-unit: restart $BUS_NAME and $WEBUI_UNIT together to put both on copy $COPY_ID; until then they may run different copies"
@@ -0,0 +1,484 @@
+#!/usr/bin/env bash
+# Case 2 row C2-13a (design 9.3, 10 step 2c): render and install the two
+# system units a hub runs as, [email protected] (enabled as
+# mosaic-bus@<business>.service) and mosaic-webui.service, from the existing
+# templates, which it doesn't change.
+#
+#   case2-unit.sh --user NAME --home DIR --business ID --copy ID --node PATH
+#                 [--profile factory|library] [--pm] [--claude PATH]
+#                 -- SERVE FLAGS
+#
+# Root runs it from a root-owned checkout of the reviewed commit outside
+# <home>, never from the release, because <user> can write the release. It
+# writes both units under /etc/systemd/system as root:root 0644, runs
+# `systemctl daemon-reload`, enables both, then starts the bus and then the
+# Console (Q189). Both come back after a boot on their own. It never links
+# a unit file into place. Root only stats files under <home> and reads bounded
+# stdout from a config/target query run as the stack user through sudo. Root
+# never imports copy code. This adds sudo and GNU timeout to the installer
+# dependencies. It renders the default instance only.
+#
+# The library profile takes exactly these serve flags, each once:
+#   --port N (1..1023)  --business ID (the unit's)  --public-host NAME
+#   --auth-header HEADER  --allow-user ID  --send
+#   --proof-header NAME  --proof-file PATH
+# The factory profile takes --port N (1..1023) and --business ID, and an
+# optional bare --tester-socket marker. Retired tester TCP refuses. Only factory takes
+# --pm and --claude.
+#
+# On a re-install the installed units must equal the render in everything
+# but the copy id, and both must name one copy, so a re-pin or rollback
+# re-renders the pair together. A unit that was already running stays on its
+# old copy, since `systemctl start` leaves it alone; the script says so and
+# that the bus and Console must restart together, and restarts nothing.
+#
+# Test seams, for packages/cli/tests/case2-unit.test.mjs only:
+#   CASE2_UNIT_DIR        the unit directory, default /etc/systemd/system;
+#                         the root and root-owned checks apply only there
+#   CASE2_SYSTEMCTL       the systemctl command, default systemctl
+#   CASE2_GETENT          the getent command, default getent
+#   CASE2_BUS_TEMPLATE    default packages/cli/systemd/mosaic-bus.service.in
+#   CASE2_WEBUI_TEMPLATE  default packages/webui/systemd/mosaic-webui.service.in
+#
+# Exit 0 done, 1 refused, 4 usage.
+set -euo pipefail
+REPO="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+DEFAULT_UNIT_DIR=/etc/systemd/system
+UNIT_DIR="${CASE2_UNIT_DIR:-$DEFAULT_UNIT_DIR}"
+SYSTEMCTL="${CASE2_SYSTEMCTL:-systemctl}"
+GETENT="${CASE2_GETENT:-getent}"
+BUS_TEMPLATE="${CASE2_BUS_TEMPLATE:-$REPO/packages/cli/systemd/mosaic-bus.service.in}"
+WEBUI_TEMPLATE="${CASE2_WEBUI_TEMPLATE:-$REPO/packages/webui/systemd/mosaic-webui.service.in}"
+[email protected]
+WEBUI_UNIT=mosaic-webui.service
+
+usage() { echo 'usage: case2-unit.sh --user NAME --home DIR --business ID --copy ID --node PATH [--profile factory|library] [--pm] [--claude PATH] -- SERVE FLAGS' >&2; exit 4; }
+die() { echo "case2-unit: $*" >&2; exit 1; }
+# A value the unit carries as itself: no space, %, $, quote, backslash, & or |.
+plain() { case "$1" in *[!A-Za-z0-9/._+-]*) return 1 ;; esac; }
+abs_plain() {
+    case "$1" in /*) ;; *) die "$2 must be an absolute path: $1" ;; esac
+    plain "$1" || die "$2 contains a character the unit cannot carry: $1"
+    case "$1/" in */./*|*/../*|?*//*) die "$2 must be a normalized path: $1" ;; esac
+    [ "$1" = / ] || [ "${1%/}" = "$1" ] || die "$2 must not end in /: $1"
+}
+
+PROFILE=library USER_NAME='' HOME_DIR='' BUSINESS='' COPY_ID='' NODE='' PM=0 CLAUDE='' CLAUDE_SET=0
+while [ $# -gt 0 ]; do
+    case "$1" in
+        --profile|--user|--home|--business|--copy|--node|--claude)
+            [ $# -ge 2 ] || usage
+            case "$1" in
+                --profile) PROFILE="$2" ;; --user) USER_NAME="$2" ;; --home) HOME_DIR="$2" ;;
+                --business) BUSINESS="$2" ;; --copy) COPY_ID="$2" ;; --node) NODE="$2" ;;
+                --claude) CLAUDE="$2"; CLAUDE_SET=1 ;;
+            esac
+            shift 2 ;;
+        --pm) PM=1; shift ;;
+        --) shift; break ;;
+        *) usage ;;
+    esac
+done
+SERVE=("$@")
+[ -n "$USER_NAME" ] && [ -n "$HOME_DIR" ] && [ -n "$BUSINESS" ] && [ -n "$COPY_ID" ] && [ -n "$NODE" ] || usage
+case "$PROFILE" in factory|library) ;; *) die "--profile must be factory or library: $PROFILE" ;; esac
+if [ "$PROFILE" = library ]; then
+    [ "$PM" = 0 ] || die "the library profile refuses --pm"
+    [ "$CLAUDE_SET" = 0 ] || die "the library profile refuses --claude"
+fi
+
+if [ "$UNIT_DIR" = "$DEFAULT_UNIT_DIR" ]; then
+    [ "$(id -u)" = 0 ] || die "writing $DEFAULT_UNIT_DIR needs root"
+fi
+
+# The user, its uid, primary group and home, from the passwd database.
+[[ "$USER_NAME" =~ ^[a-z_][a-z0-9_-]{0,31}$ ]] || die "--user must be a user name: $USER_NAME"
+PW="$("$GETENT" passwd "$USER_NAME")" || die "no user $USER_NAME in the passwd database"
+IFS=: read -r _ _ USER_UID USER_GID _ PW_HOME _ <<<"$PW"
+[[ "$USER_UID" =~ ^[0-9]+$ ]] && [ "$USER_UID" -ne 0 ] || die "--user must not be root: $USER_NAME"
+abs_plain "$HOME_DIR" '--home'
+[ "$HOME_DIR" = "$PW_HOME" ] || die "--home $HOME_DIR is not $USER_NAME's home in the passwd database ($PW_HOME)"
+GR="$("$GETENT" group "$USER_GID")" || die "no group $USER_GID in the group database"
+GROUP="${GR%%:*}"
+[[ "$GROUP" =~ ^[a-z_][a-z0-9_-]{0,31}$ ]] || die "the primary group of $USER_NAME is not a group name: $GROUP"
+
+case "$BUSINESS" in [a-z0-9]*) ;; *) die "--business must be a business id: $BUSINESS" ;; esac
+case "$BUSINESS" in *[!a-z0-9._-]*) die "--business must be a business id: $BUSINESS" ;; esac
+[ "${#BUSINESS}" -le 64 ] || die "--business must be a business id: $BUSINESS"
+
+# The copy: copy_root's rule (scripts/stack-copy.sh:8, :22), under <home>.
+COPIES="$HOME_DIR/.local/share/mosaic-stack/copies"
+[[ "$COPY_ID" =~ ^[0-9a-f]{40}$ ]] || die "--copy must be a full 40-character lower-case commit id: $COPY_ID"
+COPY="$COPIES/$COPY_ID"
+[ -d "$COPY" ] && [ ! -L "$COPY" ] || die "no copy directory $COPY"
+[ -f "$COPY/scripts/mosaic" ] || die "no copy $COPY_ID in $COPIES: $COPY/scripts/mosaic is missing"
+
+# Owned by root and writable by no one else, the file and every directory above it.
+root_only() {
+    local p="$1" what="$2" owner mode
+    while :; do
+        owner="$(stat -c '%u' -- "$p")" || die "cannot stat $p"
+        mode="$(stat -c '%a' -- "$p")" || die "cannot stat $p"
+        [ "$owner" = 0 ] || die "$what: $p is not owned by root"
+        (( (8#$mode & 8#022) == 0 )) || die "$what: $p is writable by its group or others"
+        [ "$p" = / ] && break
+        p="$(dirname -- "$p")"
+    done
+}
+
+# --node: an absolute path to a root-owned regular file outside <home>.
+abs_plain "$NODE" '--node'
+case "$NODE/" in "$HOME_DIR"/*) die "--node must be outside $HOME_DIR: $NODE" ;; esac
+[ ! -L "$NODE" ] || die "--node must not be a symlink; pass its target: $NODE"
+[ -f "$NODE" ] && [ -x "$NODE" ] || die "--node must be an executable regular file: $NODE"
+root_only "$NODE" '--node'
+
+# --claude follows the --node rule, so nothing running as <user> can replace
+# the binary the bus runs.
+if [ "$CLAUDE_SET" = 1 ]; then
+    abs_plain "$CLAUDE" '--claude'
+    case "$CLAUDE/" in "$HOME_DIR"/*) die "--claude must be outside $HOME_DIR: $CLAUDE" ;; esac
+    [ ! -L "$CLAUDE" ] || die "--claude must not be a symlink; pass its target: $CLAUDE"
+    [ -f "$CLAUDE" ] && [ -x "$CLAUDE" ] || die "--claude must be an executable regular file: $CLAUDE"
+    root_only "$CLAUDE" '--claude'
+fi
+
+# The checkout the templates come from, when installing for real.
+if [ "$UNIT_DIR" = "$DEFAULT_UNIT_DIR" ]; then
+    case "$REPO/" in "$HOME_DIR"/*) die "run this from a root-owned checkout outside $HOME_DIR, not $REPO" ;; esac
+    root_only "$BUS_TEMPLATE" 'bus template'
+    root_only "$WEBUI_TEMPLATE" 'Console template'
+fi
+
+# Row253: bounded unprivileged metadata, parsed by root without running copy code.
+tester_capture() (
+    local seconds="$1" maximum="$2" file child="" rc=0; shift 2
+    file="$(mktemp)" || exit 1
+    trap 'if [ -n "$child" ]; then kill -KILL -- "-$child" 2>/dev/null || :; wait "$child" 2>/dev/null || :; fi; rm -f -- "$file"' EXIT
+    trap 'exit 1' HUP INT TERM
+    timeout --signal=KILL "${seconds}s" /bin/bash -c 'set -o pipefail; maximum="$1"; shift; "$@" | head -c "$((maximum + 1))"' -- "$maximum" "$@" > "$file" 2>/dev/null &
+    child=$!
+    wait "$child" 2>/dev/null || rc=$?
+    kill -KILL -- "-$child" 2>/dev/null || :
+    [ "$rc" = 0 ] && [ "$(wc -c < "$file")" -le "$maximum" ] || exit 1
+    cat -- "$file"
+)
+TESTER_QUERY='import {readFileSync} from "node:fs";import {pathToFileURL} from "node:url";const m=await import(pathToFileURL(process.argv[1]).href);const s=m.loadSystem();console.log(JSON.stringify({dataRoot:s.dataRoot,socket:readFileSync(process.argv[2],"utf8").includes("MOSAIC_TESTER_SOCKET_V1")}));'
+tester_facts() {
+    local LC_ALL=C pattern='^\{"dataRoot":"([A-Za-z0-9/._@+-]+)","socket":(true|false)\}$'
+    [[ "$1" =~ $pattern ]] || return 1
+    TS_DATA="${BASH_REMATCH[1]}" TS_MARKED="${BASH_REMATCH[2]}"
+}
+tester_location() {
+    local LC_ALL=C data="$1" home="$2" uid="$3" prefix="$4" part at="" st
+    TS_REASON="" TS_SOCKET=""
+    case "$data" in /*) ;; *) TS_REASON=not-absolute; return 1 ;; esac
+    case "$data" in *[!A-Za-z0-9/._@+-]*) TS_REASON=not-ascii; return 1 ;; esac
+    case "$data/" in */./*|*/../*|*//* ) TS_REASON=not-normalized; return 1 ;; esac
+    [ "${data%/}" = "$data" ] || { TS_REASON=not-normalized; return 1; }
+    case "$data" in "$home"/*) ;; *) TS_REASON=outside-home; return 1 ;; esac
+    case "$home/" in /home/*|/root/*|/run/user/*|/tmp/*|/var/tmp/*) TS_REASON=protected-private-home; return 1 ;; esac
+    TS_SOCKET="$data/console/tester.sock"
+    [ "${#TS_SOCKET}" -le 107 ] || { TS_REASON=too-long; return 1; }
+    local -a parts
+    IFS=/ read -r -a parts <<< "$data"
+    for part in "${parts[@]}"; do
+        [ -n "$part" ] || continue
+        at="$at/$part"
+        [ ! -L "$prefix$at" ] || { TS_REASON=symlink-component; return 1; }
+        if [ -e "$prefix$at" ]; then
+            [ -d "$prefix$at" ] || { TS_REASON=component-type; return 1; }
+        fi
+    done
+    local parent="$prefix$data/console"
+    [ ! -L "$parent" ] || { TS_REASON=symlink-parent; return 1; }
+    if [ -e "$parent" ]; then
+        [ -d "$parent" ] || { TS_REASON=parent-type; return 1; }
+        st="$(stat -c '%u %a' -- "$parent")" || { TS_REASON=parent-stat; return 1; }
+        [ "${st% *}" = "$uid" ] || { TS_REASON=parent-owner; return 1; }
+        [[ "${st#* }" =~ ^[0-7]{3,4}$ ]] && (( (8#${st#* } & 8#077) == 0 )) || { TS_REASON=parent-mode; return 1; }
+    fi
+}
+# tester-location-end
+
+# The serve flags, checked as scripts/webui-service.sh serve_flags checks
+# them (:201-264), and kept in the order given. That script compares the
+# proof file's owner to `id -u`, which is root here, so this copy has its own.
+serve_flags() {
+    local -A seen=()
+    local flags='' name value
+    local port='' public_host='' auth_header='' allow_user='' proof_header='' proof_file='' tester_socket=0
+    local i=0 n=${#SERVE[@]}
+    while [ "$i" -lt "$n" ]; do
+        name="${SERVE[$i]}"
+        case "$name" in
+            --tester-port) die "case2-unit.sh retires tester TCP; use --tester-socket" ;;
+            --tester-socket) [ "$PROFILE" = factory ] || die "the library profile refuses --tester-socket" ;;
+            --checkout) die "refusing --checkout: Case 2 has no queue panel" ;;
+            --board) die "refusing --board: Case 2 runs no control board" ;;
+            --sso) die "refusing --sso: the Console signs people in through the proxy, with the preview set and the proof pair (Q175 phase 2 is a follow-up)" ;;
+            --port|--business) ;;
+            --public-host|--auth-header|--allow-user|--proof-header|--proof-file|--send)
+                [ "$PROFILE" = library ] || die "the factory profile refuses $name: its host has no proxy" ;;
+            *) die "unknown serve flag: $name" ;;
+        esac
+        [ -z "${seen[$name]:-}" ] || die "serve flag $name given twice"
+        seen[$name]=1
+        if [ "$name" = --tester-socket ]; then tester_socket=1; flags="$flags --tester-socket"; i=$((i + 1)); continue; fi
+        if [ "$name" = --send ]; then flags="$flags --send"; i=$((i + 1)); continue; fi
+        [ $((i + 1)) -lt "$n" ] || die "serve flag $name needs a value"
+        value="${SERVE[$((i + 1))]}"
+        case "$name" in
+            --port) port="$value"
+                [[ "$port" =~ ^[1-9][0-9]{0,3}$ ]] && [ "$port" -le 1023 ] || die "--port must be 1..1023, so only the unit's capability can bind it: $port" ;;
+            --business) [ "$value" = "$BUSINESS" ] || die "serve --business $value is not the unit's business $BUSINESS" ;;
+            --public-host) public_host="$value"
+                case "$value" in [A-Za-z0-9]*) ;; *) die "public host must be a hostname, no port or scheme: $value" ;; esac
+                case "$value" in *[!A-Za-z0-9.-]*) die "public host must be a hostname, no port or scheme: $value" ;; esac ;;
+            --auth-header) auth_header="$value"
+                case "$value" in [A-Za-z0-9]*) ;; *) die "auth header must be a header name: $value" ;; esac
+                case "$value" in *[!A-Za-z0-9-]*) die "auth header must be a header name: $value" ;; esac ;;
+            --allow-user) allow_user="$value"
+                case "$value" in [A-Za-z0-9]*) ;; *) die "allowed user must start with a letter or digit: $value" ;; esac
+                case "$value" in *[!A-Za-z0-9._@+-]*) die "allowed user contains a character the unit cannot carry: $value" ;; esac ;;
+            --proof-header) proof_header="$value"
+                [[ "$value" =~ ^[A-Za-z0-9][A-Za-z0-9-]{0,63}$ ]] || die "invalid proxy proof header" ;;
+            --proof-file) proof_file="$value" ;;
+        esac
+        flags="$flags $name $value"
+        i=$((i + 2))
+    done
+    local required=(--port --business)
+    [ "$PROFILE" = factory ] || required+=(--public-host --auth-header --allow-user --send --proof-header --proof-file)
+    for name in "${required[@]}"; do
+        [ -n "${seen[$name]:-}" ] || die "serve flag $name is required"
+    done
+    if [ "$PROFILE" = factory ]; then
+        if [ "$tester_socket" = 1 ]; then
+            local query
+            query="$(tester_capture 5 4096 sudo -u "$USER_NAME" -H env -i "HOME=$HOME_DIR" "PATH=$UNIT_PATH" "$NODE" --input-type=module -e "$TESTER_QUERY" "$COPY/packages/cli/src/config.mjs" "$COPY/packages/webui/src/cli.mjs")" || die "tester config query failed"
+            tester_facts "$query" || die "tester config query has invalid facts"
+            [ "$TS_MARKED" = true ] || die "the target does not support --tester-socket"
+            tester_location "$TS_DATA" "$HOME_DIR" "$USER_UID" "" || die "tester path refuses $TS_REASON"
+        fi
+        echo "${flags# }"; return 0
+    fi
+    # Lead decision 101: the uid header carries the Authentik uid.
+    if [ "${auth_header,,}" = x-authentik-uid ] && ! [[ "$allow_user" =~ ^[0-9a-f]{64}$ ]]; then
+        die "with --auth-header $auth_header the allowed user must be an Authentik uid, 64 lower-case hex characters (lead decision 101): $allow_user"
+    fi
+    case "${proof_header,,}" in host|origin|x-mosaic-tester|"${auth_header,,}") die "proxy proof header must differ from Host, Origin, tester and auth headers" ;; esac
+    # The proof file: metadata only, never opened (design 9.3).
+    local secrets="$HOME_DIR/.config/mosaic-dev/secrets" real owner mode
+    abs_plain "$proof_file" 'proxy proof file'
+    [ ! -L "$proof_file" ] || die "proxy proof file must not be a symlink: $proof_file"
+    [ -f "$proof_file" ] || die "proxy proof file must be a regular file: $proof_file"
+    real="$(realpath -e -- "$proof_file")" || die "cannot resolve proxy proof file: $proof_file"
+    [ "$real" = "$proof_file" ] || die "proxy proof file path must have no symlink in it: $proof_file"
+    case "$proof_file" in "$secrets"/*) ;; *) die "proxy proof file must be under $secrets, outside the data root: $proof_file" ;; esac
+    owner="$(stat -c '%u' -- "$proof_file")" || die "cannot stat proxy proof file"
+    mode="$(stat -c '%a' -- "$proof_file")" || die "cannot stat proxy proof file"
+    [ "$owner" = "$USER_UID" ] || die "proxy proof file must be owned by $USER_NAME (uid $USER_UID): $proof_file"
+    [ "$mode" = 600 ] || [ "$mode" = 400 ] || die "proxy proof file must be mode 0600 or 0400, not $mode: $proof_file"
+    echo "${flags# }"
+}
+# PATH: the node's directory first, then the default list without it. Unlike
+# scripts/webui-service.sh:303-305 this always puts node's directory first,
+# so the bus's `exec node` (scripts/mosaic) finds the same node.
+NODE_DIR="$(dirname -- "$NODE")"
+UNIT_PATH="$NODE_DIR"
+for d in /usr/local/bin /usr/bin /bin; do [ "$d" = "$NODE_DIR" ] || UNIT_PATH="$UNIT_PATH:$d"; done
+FLAGS="$(serve_flags)" || exit 1
+
+HARDENING="ProtectSystem=strict
+ReadWritePaths=$HOME_DIR
+ProtectHome=yes
+PrivateTmp=yes"
+CAPS="AmbientCapabilities=CAP_NET_BIND_SERVICE
+CapabilityBoundingSet=CAP_NET_BIND_SERVICE"
+# The default instance, as scripts/instance.sh:85-107 renders it: no
+# MOSAIC_CONFIG line, and the session env under %h, which becomes <home>.
+SESSION_ENV='%h/.config/mosaic-dev/secrets/claude-session.env'
+ENV_FILE="-$HOME_DIR/.config/mosaic-dev/secrets/claude-session.env"
+PM_FLAGS=''
+[ "$PM" = 0 ] || PM_FLAGS=' --pm'
+CLAUDE_ENV=''
+[ "$CLAUDE_SET" = 0 ] || CLAUDE_ENV="Environment=MOSAIC_CLAUDE_BIN=$CLAUDE"
+
+# One unit from its template. kind is bus or webui.
+render() {
+    local kind="$1" template="$2" text tokens
+    [ -f "$template" ] && [ ! -L "$template" ] || die "template missing or not a regular file: $template"
+    text="$(sed -e "s|@REPO@|$COPY|g" -e "s|@PATH@|$UNIT_PATH|g" -e "s|@NODE@|$NODE|g" \
+        -e "s|@PM_FLAGS@|$PM_FLAGS|g" -e "s|^@CLAUDE_ENV@\$|$CLAUDE_ENV|" \
+        -e '/^@CONFIG_ENV@$/d' -e "s|@SESSION_ENV@|$SESSION_ENV|g" \
+        -e "s|%h|$HOME_DIR|g" -- "$template")"
+    # Checked before @FLAGS@ goes in, since an allowed user may hold @.
+    tokens="$(printf '%s\n' "$text" | grep -oE '@[A-Z_]+@' || true)"
+    if [ "$kind" = webui ]; then
+        [ "$tokens" = @FLAGS@ ] || die "$template: a token other than one @FLAGS@ is left after the render: $(echo $tokens)"
+        text="${text//@FLAGS@/$FLAGS}"
+    else
+        [ -z "$tokens" ] || die "$template: a token is left after the render: $(echo $tokens)"
+    fi
+    if printf '%s\n' "$text" | grep -q '%h'; then die "$template: %h is left after the render"; fi
+    local add="User=$USER_NAME\nGroup=$GROUP\n${HARDENING//$'\n'/\\n}\n"
+    [ "$kind" = bus ] || add="$add${CAPS//$'\n'/\\n}\n"
+    # The added lines go at the end of [Service], before its trailing blank
+    # lines. In [Install], WantedBy=multi-user.target replaces
+    # WantedBy=default.target in both units, so both start at boot (Q189).
+    printf '%s\n' "$text" | awk -v add="$add" '
+        function blanks_out() { for (; blanks > 0; blanks--) print "" }
+        /^\[.*\]$/ {
+            if (sec == "[Service]") printf "%s", add
+            sec = $0
+            blanks_out(); print; next
+        }
+        $0 == "" { blanks++; next }
+        { blanks_out() }
+        sec == "[Install]" && $0 == "WantedBy=default.target" { $0 = "WantedBy=multi-user.target" }
+        { print }
+        END { if (sec == "[Service]") printf "%s", add; blanks_out() }'
+}
+
+# The unit's settings as section<TAB>key<TAB>value, one per line, keys
+# trimmed as systemd trims them. A continued line refuses, so no setting
+# hides in one.
+settings() {
+    awk '
+        { sub(/^[ \t]+/, ""); sub(/[ \t]+$/, "") }
+        $0 == "" || /^[#;]/ { next }
+        /\\$/ { print "CONTINUED"; exit }
+        /^\[.*\]$/ { sec = $0; next }
+        {
+            i = index($0, "="); if (i == 0) { print "NOKEY\t" $0; next }
+            k = substr($0, 1, i - 1); v = substr($0, i + 1)
+            sub(/[ \t]+$/, "", k); sub(/^[ \t]+/, "", v)
+            print sec "\t" k "\t" v
+        }'
+}
+
+# Refuses unless one unit's fixed lines hold. what names the unit in messages,
+# copy is the copy directory it should run from.
+check_unit() {
+    local kind="$1" text="$2" what="$3" copy="$4" s
+    s="$(printf '%s\n' "$text" | settings)"
+    ! printf '%s\n' "$s" | grep -qx CONTINUED || die "$what: a line continues onto the next"
+    ! printf '%s\n' "$s" | grep -q '^NOKEY' || die "$what: a line is neither a section, a comment nor a setting"
+    # %h in a system unit is root's home, not <user>'s.
+    ! printf '%s\n' "$text" | grep -q '%h' || die "$what: %h is left; a system unit reads it as root's home"
+    local key
+    for key in RestrictNamespaces PrivateUsers SystemCallFilter PermissionsStartOnly; do
+        ! printf '%s\n' "$s" | awk -F'\t' -v k="$key" '$2 == k { found = 1 } END { exit !found }' \
+            || die "$what: refusing $key=, which the hub's units must not hold"
+    done
+    # An Exec*= value whose leading prefix characters hold + or ! runs with
+    # full privileges, whatever User= says.
+    local bad
+    bad="$(printf '%s\n' "$s" | awk -F'\t' '$2 ~ /^Exec/ { p = $3; sub(/[^-@:+!].*$/, "", p); if (p ~ /[+!]/) print $2 "=" $3 }')"
+    [ -z "$bad" ] || die "$what: refusing an Exec line that runs with full privileges: $bad"
+    # The fixed lines, each exactly once, in [Service].
+    one() {
+        local k="$1" v="$2" got
+        got="$(printf '%s\n' "$s" | awk -F'\t' -v k="$k" '$2 == k { print $1 "\t" $3 }')"
+        [ "$got" = "[Service]	$v" ] || die "$what: $k= must be exactly once in [Service], as $k=$v"
+    }
+    none() {
+        ! printf '%s\n' "$s" | awk -F'\t' -v k="$1" '$2 == k { found = 1 } END { exit !found }' || die "$what: refusing $1=, which this unit must not hold"
+    }
+    one User "$USER_NAME"
+    one Group "$GROUP"
+    one WorkingDirectory "$copy"
+    # Environment= lines: PATH, and MOSAIC_CLAUDE_BIN only with --claude.
+    local envs want_envs="[Service]	PATH=$UNIT_PATH"
+    [ "$kind" = webui ] || [ -z "$CLAUDE_ENV" ] || want_envs="$want_envs
+[Service]	MOSAIC_CLAUDE_BIN=$CLAUDE"
+    envs="$(printf '%s\n' "$s" | awk -F'\t' '$2 == "Environment" { print $1 "\t" $3 }')"
+    [ "$envs" = "$want_envs" ] || die "$what: the Environment= lines must be exactly: $(printf '%s' "$want_envs" | cut -f2 | tr '\n' ' ')"
+    one NoNewPrivileges yes
+    one ProtectSystem strict
+    one ReadWritePaths "$HOME_DIR"
+    one ProtectHome yes
+    one PrivateTmp yes
+    local order
+    order="$(printf '%s\n' "$s" | awk -F'\t' '$2 ~ /^(ProtectSystem|ReadWritePaths|ProtectHome|PrivateTmp)$/ { printf "%s ", $2 }')"
+    [ "$order" = "ProtectSystem ReadWritePaths ProtectHome PrivateTmp " ] || die "$what: the hardening lines must be in the order ProtectSystem, ReadWritePaths, ProtectHome, PrivateTmp"
+    local wanted
+    wanted="$(printf '%s\n' "$s" | awk -F'\t' '$2 == "WantedBy" { print $1 "\t" $3 }')"
+    [ "$wanted" = "[Install]	multi-user.target" ] || die "$what: WantedBy= must be exactly once, as WantedBy=multi-user.target"
+    if [ "$kind" = bus ]; then
+        one ExecStart "$copy/scripts/mosaic bus start %i$PM_FLAGS"
+        one EnvironmentFile "$ENV_FILE"
+        none AmbientCapabilities
+        none CapabilityBoundingSet
+    else
+        one ExecStart "$NODE $copy/packages/webui/src/cli.mjs serve $FLAGS"
+        none EnvironmentFile
+        one AmbientCapabilities CAP_NET_BIND_SERVICE
+        one CapabilityBoundingSet CAP_NET_BIND_SERVICE
+    fi
+}
+
+BUS_TEXT="$(render bus "$BUS_TEMPLATE")" || exit 1
+WEBUI_TEXT="$(render webui "$WEBUI_TEMPLATE")" || exit 1
+check_unit bus "$BUS_TEXT" "rendered $BUS_UNIT" "$COPY"
+check_unit webui "$WEBUI_TEXT" "rendered $WEBUI_UNIT" "$COPY"
+
+# A re-install: each installed unit passes the same checks, both name one
+# copy, and each equals the render once its copy id is the new one.
+[ -d "$UNIT_DIR" ] && [ ! -L "$UNIT_DIR" ] || die "no unit directory $UNIT_DIR"
+installed_ids=''
+for pair in "bus:$BUS_UNIT:BUS_TEXT" "webui:$WEBUI_UNIT:WEBUI_TEXT"; do
+    IFS=: read -r kind name var <<<"$pair"
+    path="$UNIT_DIR/$name"
+    [ ! -L "$path" ] || die "refusing: $path is a symlink"
+    [ -e "$path" ] || continue
+    [ -f "$path" ] || die "refusing: $path is not a regular file"
+    text="$(cat -- "$path")"
+    old="$(printf '%s\n' "$text" | settings | awk -F'\t' -v c="$COPIES/" '$2 == "WorkingDirectory" && index($3, c) == 1 { print substr($3, length(c) + 1) }')"
+    [[ "$old" =~ ^[0-9a-f]{40}$ ]] || die "installed $path names no copy under $COPIES"
+    check_unit "$kind" "$text" "installed $path" "$COPIES/$old"
+    [ "$text" = "$(printf '%s\n' "${!var}" | sed "s|$COPY|$COPIES/$old|g")" ] \
+        || die "installed $path differs from the render in more than the copy id; the node path, serve flags, --pm and --claude must equal the installed ones"
+    installed_ids="$installed_ids $old"
+done
+read -r -a ids <<<"$installed_ids"
+[ "${#ids[@]}" -lt 2 ] || [ "${ids[0]}" = "${ids[1]}" ] || die "the installed units name different copies, ${ids[0]} and ${ids[1]}"
+
+# `systemctl start` leaves a running unit on the copy it started from, so
+# note which units run before the write (row 195 owns the restart).
+BUS_NAME="mosaic-bus@$BUSINESS.service"
+running=''
+for name in "$BUS_NAME" "$WEBUI_UNIT"; do
+    if "$SYSTEMCTL" is-active --quiet "$name"; then running="$running $name"; fi
+done
+
+# Write each unit to a temp file in the unit directory, then rename.
+write_unit() {
+    local name="$1" text="$2" tmp
+    tmp="$(mktemp "$UNIT_DIR/.case2-unit.XXXXXX")"
+    printf '%s\n' "$text" >"$tmp"
+    chmod 0644 "$tmp"
+    [ "$(id -u)" != 0 ] || chown root:root "$tmp"
+    mv -fT -- "$tmp" "$UNIT_DIR/$name"
+}
+write_unit "$BUS_UNIT" "$BUS_TEXT"
+write_unit "$WEBUI_UNIT" "$WEBUI_TEXT"
+# Enable both, then start the bus, then the Console (design 10 step 2c).
+# serve calls the bus per request, so the units carry no After= or Wants=.
+"$SYSTEMCTL" daemon-reload || die "systemctl daemon-reload failed; the units are written, nothing is enabled or started"
+"$SYSTEMCTL" enable "$BUS_NAME" "$WEBUI_UNIT" || die "systemctl enable $BUS_NAME $WEBUI_UNIT failed; nothing is started"
+"$SYSTEMCTL" start "$BUS_NAME" || die "systemctl start $BUS_NAME failed; the Console is not started"
+"$SYSTEMCTL" start "$WEBUI_UNIT" || die "systemctl start $WEBUI_UNIT failed; the bus is running"
+if [ -z "$running" ]; then
+    echo "case2-unit: wrote $UNIT_DIR/$BUS_UNIT and $UNIT_DIR/$WEBUI_UNIT from copy $COPY_ID; enabled and started $BUS_NAME, then $WEBUI_UNIT"
+    exit 0
+fi
+echo "case2-unit: wrote $UNIT_DIR/$BUS_UNIT and $UNIT_DIR/$WEBUI_UNIT from copy $COPY_ID and enabled both"
+for name in "$BUS_NAME" "$WEBUI_UNIT"; do
+    case " $running " in
+        *" $name "*) echo "case2-unit: $name was already running, so it is still on ${ids[0]:+copy }${ids[0]:-the copy it started from}, not copy $COPY_ID" ;;
+        *) echo "case2-unit: started $name on copy $COPY_ID" ;;
+    esac
+done
+echo "case2-unit: restart $BUS_NAME and $WEBUI_UNIT together to put both on copy $COPY_ID; until then they may run different copies"
@@ -0,0 +1,850 @@
+// Case 2 row C2-13a (#1732): scripts/case2-unit.sh renders and installs the hub's two system units,
+// and scripts/case2-precheck.sh checks the host before they start. Brief: docs/plans/2026-10-20_case2-rows.md
+// "C2-13a". Every case runs against a scratch unit directory, a scratch home and fake systemctl,
+// getent, sudo, id, node, bwrap and claude. Nothing here reads or writes /etc/systemd,
+// ~/.mosaic-dev or ~/.config/mosaic-dev, and no fixture value is a real credential.
+import { test } from "node:test";
+import assert from "node:assert/strict";
+import { spawnSync } from "node:child_process";
+import { createServer } from "node:net";
+import { chmodSync, existsSync, mkdirSync, readdirSync, readFileSync, realpathSync, rmSync, statSync, symlinkSync, writeFileSync } from "node:fs";
+import { dirname, join } from "node:path";
+import { fileURLToPath } from "node:url";
+import { businessDoc, writeJson } from "../../business/tests/helpers.mjs";
+import { binds, prepareRun, sandboxArgv, sandboxProblem } from "../../seat/src/sandbox.mjs";
+import { tmp } from "./helpers.mjs";
+import { CASE_SUDO_SESSION, recordedLivePids, killRecordedPids, fixtureGuard, cleanupFixture, pollFixtureGone, blockingQuerySource } from "./case-sudo-fixture.mjs";
+
+const REPO = fileURLToPath(new URL("../../../", import.meta.url));
+const UNIT = join(REPO, "scripts", "case2-unit.sh");
+const PRECHECK = join(REPO, "scripts", "case2-precheck.sh");
+const BUS_TEMPLATE = join(REPO, "packages", "cli", "systemd", "mosaic-bus.service.in");
+const WEBUI_TEMPLATE = join(REPO, "packages", "webui", "systemd", "mosaic-webui.service.in");
+const COPY_A = "a".repeat(40);
+const COPY_B = "b".repeat(40);
+const UID = process.getuid();
+const GID = process.getgid();
+// A made-up key value; no output may hold it.
+const FIXTURE_KEY = "fixture-zai-key-3c9e51";
+
+// A root-owned executable outside /usr/local/bin, /usr/bin and /bin, for the PATH case.
+function outsideNode() {
+  const dir = "/usr/lib/systemd";
+  for (const name of readdirSync(dir).sort()) {
+    const p = join(dir, name);
+    const s = statSync(p, { throwIfNoEntry: false });
+    if (s?.isFile() && s.uid === 0 && (s.mode & 0o111) && (s.mode & 0o022) === 0 && realpathSync(p) === p) return p;
+  }
+  throw new Error(`no root-owned executable in ${dir}`);
+}
+const USR_NODE = realpathSync("/usr/bin/node");
+const TRUE_BIN = realpathSync("/usr/bin/true");
+
+function script(file, text) {
+  mkdirSync(dirname(file), { recursive: true });
+  writeFileSync(file, `#!/usr/bin/env bash\n${text}\n`);
+  chmodSync(file, 0o755);
+  return file;
+}
+
+// A scratch hub: a home with two copies and a proof file, a unit directory, and fakes.
+function hub(t, { uid = UID } = {}) {
+  const root = tmp(t, "case2-unit-");
+  const home = join(root, "home", "mosaic");
+  for (const id of [COPY_A, COPY_B]) {
+    mkdirSync(join(home, ".local", "share", "mosaic-stack", "copies", id, "scripts"), { recursive: true });
+    writeFileSync(join(home, ".local", "share", "mosaic-stack", "copies", id, "scripts", "mosaic"), "");
+  }
+  const secrets = join(home, ".config", "mosaic-dev", "secrets");
+  mkdirSync(secrets, { recursive: true, mode: 0o700 });
+  const proof = join(secrets, "proxy-proof");
+  writeFileSync(proof, "made-up-proof\n");
+  chmodSync(proof, 0o600);
+  const units = join(root, "units");
+  mkdirSync(units);
+  const bin = join(root, "bin");
+  const log = join(root, "systemctl.log");
+  script(join(bin, "getent"), `case "$1" in
+  passwd) [ "$2" = mosaic ] && echo "mosaic:x:${uid}:${GID}::${home}:/bin/bash" ;;
+  group) [ "$2" = "${GID}" ] && echo "mosaic:x:${GID}:" ;;
+  *) exit 2 ;;
+esac`);
+  // is-active answers yes for each unit named in CASE2_TEST_ACTIVE.
+  script(join(bin, "systemctl"), `echo "$*" >>'${log}'
+if [ "$1" = is-active ]; then case " \${CASE2_TEST_ACTIVE:-} " in *" $3 "*) exit 0 ;; *) exit 3 ;; esac; fi
+[ "$*" != "\${CASE2_TEST_FAIL:-}" ]`);
+  const dataRoot = join(home, '.mosaic-dev'), query = join(root, 'query.json'), sudoLog = join(root, 'sudo.log');
+  mkdirSync(dataRoot, { recursive: true });
+  writeJson(query, { dataRoot });
+  for (const copy of [COPY_A, COPY_B]) {
+    const src = join(home, '.local/share/mosaic-stack/copies', copy, 'packages');
+    mkdirSync(join(src, 'cli/src'), { recursive: true }); mkdirSync(join(src, 'webui/src'), { recursive: true });
+    writeFileSync(join(src, 'cli/src/config.mjs'), `import fs from 'node:fs';export const loadSystem=()=>JSON.parse(fs.readFileSync(${JSON.stringify(query)},'utf8'));`);
+    writeFileSync(join(src, 'webui/src/cli.mjs'), '// MOSAIC_TESTER_SOCKET_V1\n');
+  }
+  script(join(bin, 'sudo'), `${CASE_SUDO_SESSION}
+echo "$*" >>'${sudoLog}'
+[ "$1" = -u ] && [ "$2" = mosaic ] && [ "$3" = -H ] || exit 97
+shift 3
+[ "$1" = env ] && [ "$2" = -i ] && [ "$3" = 'HOME=${home}' ] || exit 98
+if [ -f '${root}/query-hang' ]; then
+ trap '' TERM
+ (trap '' TERM; echo "$BASHPID" >>'${root}/query-pids'; exec sleep 60) &
+ echo "$BASHPID" >>'${root}/query-pids'; wait; exit
+fi
+if [ -f '${root}/query-orphan' ]; then
+ (trap '' TERM; here="$BASHPID"; read -r sid < <(/bin/ps -o sid= -p "$here"); printf '%s %s\\n' "$here" "$sid" >'${root}/query-owned'; exec sleep 60) </dev/null >/dev/null 2>&1 &
+ echo "$!" >'${root}/query-pids'
+ cat '${root}/query-output'; exit 0
+fi
+if [ -f '${root}/query-output' ]; then cat '${root}/query-output'; exit "$(cat '${root}/query-status')"; fi
+case_sudo_run '${root}' "$@"`);
+  return { root, home, secrets, proof, units, bin, log, dataRoot, query, sudoLog };
+}
+
+const libraryFlags = (h) => ["--port", "443", "--business", "acme", "--public-host", "books.example", "--auth-header", "X-Auth-User",
+  "--allow-user", "melanie", "--send", "--proof-header", "X-Proxy-Proof", "--proof-file", h.proof];
+const factoryFlags = () => ["--port", "443", "--business", "acme", "--tester-socket"];
+
+function unit(h, { profile = "library", node = USR_NODE, copy = COPY_A, extra = [], flags, env = {} } = {}) {
+  const serve = flags ?? (profile === "factory" ? factoryFlags() : libraryFlags(h));
+  const args = ["--user", "mosaic", "--home", h.home, "--business", "acme", "--copy", copy, "--node", node, "--profile", profile, ...extra, "--", ...serve];
+  const r = spawnSync(UNIT, args, {
+    encoding: "utf8",
+    timeout: 30000,
+    env: { PATH: `${h.bin}:${process.env.PATH}`, CASE2_UNIT_DIR: h.units, CASE2_SYSTEMCTL: join(h.bin, "systemctl"), CASE2_GETENT: join(h.bin, "getent"), ...env },
+  });
+  return { code: r.status, out: r.stdout, err: r.stderr };
+}
+
+const busFile = (h) => join(h.units, "[email protected]");
+const webuiFile = (h) => join(h.units, "mosaic-webui.service");
+const read = (f) => readFileSync(f, "utf8");
+const lines = (text, key) => text.split("\n").filter((l) => l.startsWith(`${key}=`)).map((l) => l.slice(key.length + 1));
+const copyDir = (h, id = COPY_A) => join(h.home, ".local", "share", "mosaic-stack", "copies", id);
+const HARDENING = (h) => ["ProtectSystem=strict", `ReadWritePaths=${h.home}`, "ProtectHome=yes", "PrivateTmp=yes"];
+
+test('row253 factory socket uses actual config and target-uid query without widening hardening', t=>{
+ const h=hub(t),custom=join(h.home,'custom');mkdirSync(custom);writeJson(h.query,{dataRoot:custom});
+ const r=unit(h,{profile:'factory'});assert.equal(r.code,0,r.out+r.err);
+ assert.deepEqual(lines(read(webuiFile(h)),'ExecStart'),[`${USR_NODE} ${copyDir(h)}/packages/webui/src/cli.mjs serve ${factoryFlags().join(' ')}`]);
+ assert.deepEqual(read(webuiFile(h)).split('\n').filter(l=>/^(ProtectSystem|ReadWritePaths|ProtectHome|PrivateTmp)=/.test(l)),HARDENING(h));
+ assert.match(read(h.sudoLog),new RegExp(`^-u mosaic -H env -i HOME=${h.home} PATH=`, 'm'));
+ assert.equal(existsSync(join(custom,'console')),false,'installer never creates the socket parent');
+});
+
+test('row253 installer refuses unsafe location and query facts before unit writes',t=>{
+ const cases=[
+  ['sibling prefix',h=>writeJson(h.query,{dataRoot:h.home+'2/data'}),/outside.*home/],
+  ['dot',h=>writeJson(h.query,{dataRoot:h.home+'/./data'}),/normalized/],
+  ['dotdot',h=>writeJson(h.query,{dataRoot:h.home+'/x/../data'}),/normalized/],
+  ['double slash',h=>writeJson(h.query,{dataRoot:h.home+'//data'}),/normalized/],
+  ['trailing slash',h=>writeJson(h.query,{dataRoot:h.home+'/data/'}),/normalized/],
+  ['newline',h=>writeJson(h.query,{dataRoot:h.home+'/x\nP10 forged closed'}),/query/],
+  ['non ASCII',h=>writeJson(h.query,{dataRoot:h.home+'/é'}),/query/],
+  ['middle symlink',h=>{symlinkSync(h.dataRoot,join(h.home,'link'));writeJson(h.query,{dataRoot:join(h.home,'link','nested')});},/symlink/],
+  ['long path',h=>writeJson(h.query,{dataRoot:join(h.home,'a'.repeat(108))}),/too.long/],
+  ['parent file',h=>writeFileSync(join(h.dataRoot,'console'),'x',{mode:0o600}),/parent-type/],
+  ['parent symlink',h=>symlinkSync(h.home,join(h.dataRoot,'console')),/symlink/],
+  ['parent mode',h=>{mkdirSync(join(h.dataRoot,'console'));chmodSync(join(h.dataRoot,'console'),0o755);},/parent/],
+  ['foreign parent',h=>{mkdirSync(join(h.dataRoot,'console'),{mode:0o700});},/parent/],
+  ['unsupported',h=>writeFileSync(join(copyDir(h),'packages/webui/src/cli.mjs'),'// old copy'),/support/],
+  ['schema',h=>{writeFileSync(join(h.root,'query-output'),JSON.stringify({dataRoot:h.dataRoot,socket:true,extra:true}));writeFileSync(join(h.root,'query-status'),'0');},/query/],
+  ['wrong type',h=>{writeFileSync(join(h.root,'query-output'),JSON.stringify({dataRoot:h.dataRoot,socket:'true'}));writeFileSync(join(h.root,'query-status'),'0');},/query/],
+  ['noisy query',h=>{writeFileSync(join(h.root,'query-output'),'noise\n'+JSON.stringify({dataRoot:h.dataRoot,socket:true}));writeFileSync(join(h.root,'query-status'),'0');},/query/],
+  ['failed valid query',h=>{writeFileSync(join(h.root,'query-output'),JSON.stringify({dataRoot:h.dataRoot,socket:true}));writeFileSync(join(h.root,'query-status'),'1');},/query/],
+ ];
+ for(const [name,change,why] of cases){
+  const h=hub(t,{uid:name==='foreign parent'?UID+4242:UID});change(h);
+  const r=unit(h,{profile:'factory'});refuses(r,why);
+  assert.equal(existsSync(busFile(h)),false,name);assert.equal(existsSync(webuiFile(h)),false,name);assert.equal(existsSync(h.log),false,name);
+  assert.equal((r.out+r.err).includes('P10 forged closed'),false,name);
+ }
+});
+
+test('row253 query timeout kills its process group and leaves no running child',async t=>{
+ const h=hub(t);writeFileSync(join(h.root,'query-hang'),'');
+ const r=unit(h,{profile:'factory'});refuses(r,/query/);
+ const pids=read(join(h.root,'query-pids')).trim().split('\n').map(Number);assert.ok(pids.length>=2);
+ for(const pid of pids){
+  let state='gone';
+  for(let n=0;n<50;n++){
+   try{state=read(`/proc/${pid}/stat`).split(') ')[1].split(' ')[0];}catch{state='gone';}
+   if(state==='gone'||state==='Z')break;
+   await new Promise(resolve=>setTimeout(resolve,10));
+  }
+  assert.ok(state==='gone'||state==='Z',`query descendant ${pid} still ${state}`);
+ }
+ assert.equal(existsSync(h.log),false);assert.equal(existsSync(busFile(h)),false);
+});
+
+test('row253 protected homes refuse before any filesystem access',()=>{
+ const source=read(UNIT), body=source.slice(source.indexOf('tester_location() {'),source.indexOf('# tester-location-end'));
+ for(const home of ['/home/mosaic','/root/mosaic','/run/user/997','/tmp/mosaic','/var/tmp/mosaic']){
+  const r=spawnSync('/bin/bash',['-c',body+'\nif tester_location "$1/data" "$1" 997 ""; then exit 99; fi; printf "%s" "$TS_REASON"','--',home],{encoding:'utf8'});
+  assert.equal(r.status,0);assert.equal(r.stdout,'protected-private-home');
+ }
+});
+
+// C4 cases run through both sudo process models. Exec shares the runner's
+// session, so its session-wide check would be vacuous; exact recorded PIDs
+// are checked in both modes. Hop additionally isolates the fake session.
+for(const kind of ['sleep','signals','member']) test(`row253 C4 ${kind} query has exact inner reason and cleans all members`,async t=>{
+ for(const mode of ['exec','hop']){
+  const h=hub(t),sessions=join(h.root,'session-pids'),queries=join(h.root,'query-pids'),files=[sessions,queries];
+  writeFileSync(join(h.root,'session-mode'),mode);
+  const member=join(h.root,'q ) '+String.fromCharCode(10)+'mem'),proof=join(h.root,'comm-proof');
+  if(kind==='member')symlinkSync('/usr/bin/sleep',member);
+  writeFileSync(join(copyDir(h),'packages/cli/src/config.mjs'),blockingQuerySource(queries,kind,member,proof));
+  const capture=cleanupFixture(t,files);const stopGuard=fixtureGuard(t,files);
+  const start=performance.now(),r=unit(h,{profile:'factory'}),seconds=(performance.now()-start)/1000;capture();
+  refuses(r,/^case2-unit: tester config query inner-timeout\n$/);
+  assert.ok(seconds<7,`${kind}/${mode}: ${seconds}s exceeds outer bound`);
+  assert.deepEqual(await pollFixtureGone(files),[],mode);
+  if(kind==='member')assert.ok(read(proof).includes('('+member.split('/').at(-1)+') '),'member comm with newline and closing parenthesis was observed');
+  assert.equal(existsSync(h.log),false,mode);await stopGuard();
+ }
+});
+
+test('row253 C4 overflow is output-limit in both sudo modes',async t=>{
+ for(const mode of ['exec','hop']){
+  const h=hub(t),files=[join(h.root,'session-pids')];writeFileSync(join(h.root,'session-mode'),mode);const capture=cleanupFixture(t,files);
+  writeFileSync(join(copyDir(h),'packages/cli/src/config.mjs'),`process.stdout.write('X'.repeat(8192));export const loadSystem=()=>({dataRoot:${JSON.stringify(h.dataRoot)}});`);
+  const r=unit(h,{profile:'factory'});capture();refuses(r,/^case2-unit: tester config query output-limit\n$/);
+  assert.equal(r.out,'');assert.equal(existsSync(busFile(h)),false);assert.equal(existsSync(h.log),false);
+  assert.deepEqual(await pollFixtureGone(files),[]);
+ }
+});
+
+test('row253 C4 stalled supervisor uses the outer reason and explicit residual cleanup',async t=>{
+ for(const mode of ['exec','hop']){
+  const h=hub(t),file=join(h.root,'session-pids'),files=[file];writeFileSync(join(h.root,'session-mode'),mode);
+  writeFileSync(join(h.root,'stall-config'),'');writeFileSync(join(h.root,'stall-output'),JSON.stringify({dataRoot:h.dataRoot,socket:true}));
+  const capture=cleanupFixture(t,files);const stopGuard=fixtureGuard(t,files);
+  const start=performance.now(),r=unit(h,{profile:'factory'}),seconds=(performance.now()-start)/1000;capture();
+  refuses(r,/^case2-unit: tester config query outer-timeout\n$/);
+  assert.ok(seconds>=7&&seconds<9,`${mode}: ${seconds}s; 2s slack includes root preflight`);
+  assert.equal(r.out,'');assert.equal(existsSync(busFile(h)),false);assert.equal(existsSync(h.log),false);
+  if(mode==='hop')assert.ok(recordedLivePids(file).length>0,'R3 residual exists before fixture cleanup');
+  killRecordedPids(file);assert.deepEqual(await pollFixtureGone(files),[], 'explicit fixture cleanup of R3 residual');await stopGuard();
+ }
+});
+
+test('row253 C4 inline supervisor is byte-identical in both host scripts',()=>{
+ const extract=s=>s.split('# row253-supervisor-begin\n')[1]?.split('# row253-supervisor-end')[0];
+ const a=extract(read(UNIT)),b=extract(read(join(REPO,'scripts/case1-accept.sh')));
+ assert.ok(a?.length>100);assert.equal(a,b);
+});
+
+test('row253 query reaps its group even when a child closes stdout before the query returns',async t=>{
+ const h=hub(t);writeFileSync(join(h.root,'query-orphan'),'');
+ writeFileSync(join(h.root,'query-output'),JSON.stringify({dataRoot:h.dataRoot,socket:true}));
+ let pid;
+ const capture=cleanupFixture(t,[join(h.root,'query-owned')]);
+ const r=unit(h,{profile:'factory'});capture();
+ pid=Number(read(join(h.root,'query-pids')).trim());
+ assert.equal(r.code,0,r.out+r.err);
+ let state='gone';
+ for(let n=0;n<50;n++){
+  try{state=read(`/proc/${pid}/stat`).split(') ')[1].split(' ')[0];}catch{state='gone';}
+  if(state==='gone'||state==='Z')break;
+  await new Promise(resolve=>setTimeout(resolve,10));
+ }
+ assert.ok(state==='gone'||state==='Z',`query descendant ${pid} still ${state}`);
+});
+
+test('row253 config parser is strict',()=>{
+ const source=read(UNIT), body=source.slice(source.indexOf('tester_facts() {'),source.indexOf('tester_location() {'));
+ const valid=spawnSync('/bin/bash',['-c',body+'\ntester_facts "$1" && printf "%s %s" "$TS_DATA" "$TS_MARKED"','--','{"dataRoot":"/srv/mosaic/data","socket":true}'],{encoding:'utf8'});
+ assert.equal(valid.status,0);assert.equal(valid.stdout,'/srv/mosaic/data true');
+ const facts=['{"dataRoot":"/srv/mosaic/data","socket":true,"extra":1}','{"dataRoot":4,"socket":true}','{"dataRoot":"/srv/mosaic/data","socket":"true"}','{"dataRoot":"/srv/mosaic/data","socket":true}\nP10 forged closed'];
+ for(const fact of facts){
+  const r=spawnSync('/bin/bash',['-c',body+'\ntester_facts "$1"','--',fact]);
+  assert.notEqual(r.status,0,fact);
+ }
+});
+
+function refuses(r, pattern) {
+  assert.equal(r.code, 1, `expected a refusal, got ${r.code}: ${r.out}${r.err}`);
+  assert.match(r.err, pattern);
+}
+
+// A template copy with one edit, for the template cases.
+function template(h, from, name, edit) {
+  const file = join(h.root, name);
+  writeFileSync(file, edit(read(from)));
+  return file;
+}
+
+test("a clean library render writes both units 0644 with the fixed lines, and enables both then starts the bus then the Console", (t) => {
+  const h = hub(t);
+  const r = unit(h);
+  assert.equal(r.code, 0, r.err);
+  for (const f of [busFile(h), webuiFile(h)]) assert.equal(statSync(f).mode & 0o777, 0o644);
+  const bus = read(busFile(h));
+  const webui = read(webuiFile(h));
+  assert.deepEqual(lines(bus, "Environment"), ["PATH=/usr/bin:/usr/local/bin:/bin"]);
+  assert.deepEqual(lines(bus, "ExecStart"), [`${copyDir(h)}/scripts/mosaic bus start %i`]);
+  assert.deepEqual(lines(bus, "EnvironmentFile"), [`-${h.home}/.config/mosaic-dev/secrets/claude-session.env`]);
+  assert.deepEqual(lines(webui, "ExecStart"), [`${USR_NODE} ${copyDir(h)}/packages/webui/src/cli.mjs serve ${libraryFlags(h).join(" ")}`]);
+  assert.deepEqual(lines(webui, "EnvironmentFile"), []);
+  for (const text of [bus, webui]) {
+    assert.deepEqual(lines(text, "WantedBy"), ["multi-user.target"]);
+    assert.deepEqual(lines(text, "User"), ["mosaic"]);
+    assert.deepEqual(lines(text, "Group"), ["mosaic"]);
+    assert.deepEqual(lines(text, "NoNewPrivileges"), ["yes"]);
+    const hardening = text.split("\n").filter((l) => /^(ProtectSystem|ReadWritePaths|ProtectHome|PrivateTmp)=/.test(l));
+    assert.deepEqual(hardening, HARDENING(h));
+    assert.doesNotMatch(text, /@[A-Z_]+@|%h|MOSAIC_CONFIG=|MOSAIC_CLAUDE_BIN|After=|Wants=/);
+  }
+  assert.deepEqual(lines(bus, "AmbientCapabilities"), []);
+  assert.deepEqual(lines(bus, "CapabilityBoundingSet"), []);
+  assert.deepEqual(lines(webui, "AmbientCapabilities"), ["CAP_NET_BIND_SERVICE"]);
+  assert.deepEqual(lines(webui, "CapabilityBoundingSet"), ["CAP_NET_BIND_SERVICE"]);
+  assert.match(r.out, /enabled and started mosaic-bus@acme\.service, then mosaic-webui\.service\n$/);
+  assert.deepEqual(read(h.log).trim().split("\n"), [
+    "is-active --quiet [email protected]",
+    "is-active --quiet mosaic-webui.service",
+    "daemon-reload",
+    "enable [email protected] mosaic-webui.service",
+    "start [email protected]",
+    "start mosaic-webui.service",
+  ]);
+});
+
+test("PATH starts with the --node directory, for a node outside the default list and for /usr/bin/node", (t) => {
+  const h = hub(t);
+  const node = outsideNode();
+  assert.equal(unit(h, { node }).code, 0);
+  for (const f of [busFile(h), webuiFile(h)]) assert.deepEqual(lines(read(f), "Environment"), [`PATH=${dirname(node)}:/usr/local/bin:/usr/bin:/bin`]);
+  assert.match(lines(read(webuiFile(h)), "ExecStart")[0], new RegExp(`^${node} `));
+});
+
+test("a failed bus start refuses with the Console not started", (t) => {
+  const h = hub(t);
+  const r = unit(h, { env: { CASE2_TEST_FAIL: "start [email protected]" } });
+  refuses(r, /start mosaic-bus@acme\.service failed; the Console is not started/);
+  assert.deepEqual(read(h.log).trim().split("\n").slice(2), ["daemon-reload", "enable [email protected] mosaic-webui.service", "start [email protected]"]);
+});
+
+test("the script never links a unit file", () => {
+  assert.doesNotMatch(read(UNIT), /systemctl link/);
+});
+
+test("factory renders --pm once and one MOSAIC_CLAUDE_BIN line, and without them both tokens render empty", (t) => {
+  const h = hub(t);
+  assert.equal(unit(h, { profile: "factory", extra: ["--pm", "--claude", TRUE_BIN] }).code, 0);
+  const bus = read(busFile(h));
+  const exec = lines(bus, "ExecStart");
+  assert.equal(exec.length, 1);
+  assert.match(exec[0], / bus start %i --pm$/);
+  assert.equal(exec[0].split("--pm").length, 2);
+  assert.deepEqual(lines(bus, "Environment"), ["PATH=/usr/bin:/usr/local/bin:/bin", `MOSAIC_CLAUDE_BIN=${TRUE_BIN}`]);
+  assert.deepEqual(lines(read(webuiFile(h)), "ExecStart"), [`${USR_NODE} ${copyDir(h)}/packages/webui/src/cli.mjs serve ${factoryFlags().join(" ")}`]);
+
+  const plain = hub(t);
+  assert.equal(unit(plain, { profile: "factory" }).code, 0);
+  const text = read(busFile(plain));
+  assert.deepEqual(lines(text, "ExecStart"), [`${copyDir(plain)}/scripts/mosaic bus start %i`]);
+  assert.doesNotMatch(text, /MOSAIC_CLAUDE_BIN|@PM_FLAGS@|@CLAUDE_ENV@/);
+});
+
+test("a re-install over running units says they are still on the old copy and must restart together, never that it started them", (t) => {
+  const h = hub(t);
+  assert.equal(unit(h).code, 0);
+  const both = unit(h, { copy: COPY_B, env: { CASE2_TEST_ACTIVE: "[email protected] mosaic-webui.service" } });
+  assert.equal(both.code, 0, both.err);
+  assert.doesNotMatch(both.out, /started/);
+  assert.match(both.out, new RegExp(`mosaic-bus@acme\\.service was already running, so it is still on copy ${COPY_A}, not copy ${COPY_B}`));
+  assert.match(both.out, new RegExp(`mosaic-webui\\.service was already running, so it is still on copy ${COPY_A}, not copy ${COPY_B}`));
+  assert.match(both.out, new RegExp(`restart mosaic-bus@acme\\.service and mosaic-webui\\.service together to put both on copy ${COPY_B}`));
+  assert.deepEqual(read(h.log).trim().split("\n").slice(-2), ["start [email protected]", "start mosaic-webui.service"]);
+
+  // Only the Console ran (the bus had stopped): the bus starts on the new copy, the Console stays.
+  const one = unit(h, { copy: COPY_A, env: { CASE2_TEST_ACTIVE: "mosaic-webui.service" } });
+  assert.equal(one.code, 0, one.err);
+  assert.match(one.out, new RegExp(`started mosaic-bus@acme\\.service on copy ${COPY_A}`));
+  assert.match(one.out, new RegExp(`mosaic-webui\\.service was already running, so it is still on copy ${COPY_B}, not copy ${COPY_A}`));
+  assert.doesNotMatch(one.out, /started mosaic-webui/);
+  assert.match(one.out, /restart mosaic-bus@acme\.service and mosaic-webui\.service together/);
+});
+
+test("a re-install to another copy re-renders both units, and an edited installed unit refuses", (t) => {
+  const h = hub(t);
+  assert.equal(unit(h).code, 0);
+  assert.equal(unit(h, { copy: COPY_B }).code, 0);
+  assert.match(read(busFile(h)), new RegExp(`copies/${COPY_B}/scripts/mosaic`));
+  assert.doesNotMatch(read(busFile(h)) + read(webuiFile(h)), new RegExp(COPY_A));
+
+  const edits = [
+    [busFile, (s) => s.replace("User=mosaic", "User=root"), /User= must be exactly once in \[Service\], as User=mosaic/],
+    [webuiFile, (s) => s.replace(/^ExecStart=(.*)$/m, "ExecStart=$1 --board http://127.0.0.1:1"), /ExecStart= must be exactly once/],
+    [busFile, (s) => s.replace("ProtectHome=yes\n", ""), /ProtectHome= must be exactly once/],
+    [webuiFile, (s) => s.replace("PrivateTmp=yes\n", ""), /PrivateTmp= must be exactly once/],
+    [busFile, (s) => s.replace("Type=simple", "Type=simple\nX-Note=%h"), /%h is left/],
+  ];
+  for (const [file, edit, pattern] of edits) {
+    const before = read(file(h));
+    writeFileSync(file(h), edit(before));
+    refuses(unit(h, { copy: COPY_B }), pattern);
+    writeFileSync(file(h), before);
+  }
+  assert.equal(unit(h, { copy: COPY_B }).code, 0);
+});
+
+test("a template with a namespace, user or system call restriction refuses", (t) => {
+  const h = hub(t);
+  for (const line of ["RestrictNamespaces=yes", "PrivateUsers=yes", "SystemCallFilter=@system-service"]) {
+    const key = line.split("=")[0];
+    for (const [from, env] of [[BUS_TEMPLATE, "CASE2_BUS_TEMPLATE"], [WEBUI_TEMPLATE, "CASE2_WEBUI_TEMPLATE"]]) {
+      const file = template(h, from, `t-${key}.in`, (s) => s.replace("NoNewPrivileges=yes", `NoNewPrivileges=yes\n${line}`));
+      refuses(unit(h, { env: { [env]: file } }), new RegExp(`refusing ${key}=`));
+    }
+  }
+  assert.equal(existsSync(busFile(h)), false);
+});
+
+test("the bus template's EnvironmentFile line must be there and point at the session env, and the Console template must have none", (t) => {
+  const h = hub(t);
+  const gone = template(h, BUS_TEMPLATE, "no-env.in", (s) => s.replace(/^EnvironmentFile=.*\n/m, ""));
+  refuses(unit(h, { env: { CASE2_BUS_TEMPLATE: gone } }), /EnvironmentFile= must be exactly once/);
+  const elsewhere = template(h, BUS_TEMPLATE, "env-elsewhere.in", (s) => s.replace("EnvironmentFile=-@SESSION_ENV@", "EnvironmentFile=-/etc/other.env"));
+  refuses(unit(h, { env: { CASE2_BUS_TEMPLATE: elsewhere } }), /EnvironmentFile= must be exactly once/);
+  const added = template(h, WEBUI_TEMPLATE, "webui-env.in", (s) => s.replace("NoNewPrivileges=yes", "NoNewPrivileges=yes\nEnvironmentFile=-/etc/other.env"));
+  refuses(unit(h, { env: { CASE2_WEBUI_TEMPLATE: added } }), /refusing EnvironmentFile=/);
+});
+
+test("a template holding an unknown token, PermissionsStartOnly or a privileged Exec prefix refuses", (t) => {
+  const h = hub(t);
+  const token = template(h, BUS_TEMPLATE, "token.in", (s) => s.replace("Type=simple", "Type=simple\nX-Note=@SECRET@"));
+  refuses(unit(h, { env: { CASE2_BUS_TEMPLATE: token } }), /a token is left after the render: @SECRET@/);
+  const webuiToken = template(h, WEBUI_TEMPLATE, "wtoken.in", (s) => s.replace("Type=simple", "Type=simple\nX-Note=@SECRET@"));
+  refuses(unit(h, { env: { CASE2_WEBUI_TEMPLATE: webuiToken } }), /a token other than one @FLAGS@/);
+  const pso = template(h, BUS_TEMPLATE, "pso.in", (s) => s.replace("Type=simple", "Type=simple\nPermissionsStartOnly=yes"));
+  refuses(unit(h, { env: { CASE2_BUS_TEMPLATE: pso } }), /refusing PermissionsStartOnly=/);
+  for (const pre of ["+/srv/mosaic/x", "-+/srv/mosaic/x"]) {
+    const file = template(h, BUS_TEMPLATE, "pre.in", (s) => s.replace("Type=simple", `Type=simple\nExecStartPre=${pre}`));
+    refuses(unit(h, { env: { CASE2_BUS_TEMPLATE: file } }), /an Exec line that runs with full privileges: ExecStartPre=/);
+  }
+});
+
+test("a symlink at either unit path refuses", (t) => {
+  for (const name of ["[email protected]", "mosaic-webui.service"]) {
+    const h = hub(t);
+    const target = join(h.root, "elsewhere");
+    writeFileSync(target, "");
+    symlinkSync(target, join(h.units, name));
+    refuses(unit(h), new RegExp(`${name.replace(".", "\\.")} is a symlink`));
+  }
+});
+
+test("a --node that is relative, not root-owned or under <home> refuses", (t) => {
+  const h = hub(t);
+  refuses(unit(h, { node: "bin/node" }), /--node must be an absolute path/);
+  const mine = script(join(h.root, "opt", "node"), "exit 0");
+  refuses(unit(h, { node: mine }), /--node: .* is not owned by root/);
+  const inside = script(join(h.home, "bin", "node"), "exit 0");
+  refuses(unit(h, { node: inside }), /--node must be outside/);
+});
+
+test("a re-install with a different --node or different serve flags refuses", (t) => {
+  const h = hub(t);
+  assert.equal(unit(h).code, 0);
+  // A new node moves PATH too, so the installed unit fails its own Environment= check first.
+  refuses(unit(h, { node: outsideNode() }), /installed .*: the Environment= lines must be exactly/);
+  const flags = libraryFlags(h).map((f) => (f === "melanie" ? "someone" : f));
+  refuses(unit(h, { flags }), /installed .*: ExecStart= must be exactly once/);
+  // A line check_unit doesn't fix still has to equal the render.
+  writeFileSync(busFile(h), read(busFile(h)).replace(/^Description=.*$/m, "Description=edited"));
+  refuses(unit(h), /differs from the render in more than the copy id/);
+});
+
+test("an installed pair whose units name different copies refuses", (t) => {
+  const h = hub(t);
+  assert.equal(unit(h).code, 0);
+  writeFileSync(webuiFile(h), read(webuiFile(h)).replaceAll(COPY_A, COPY_B));
+  refuses(unit(h), new RegExp(`the installed units name different copies, ${COPY_A} and ${COPY_B}`));
+});
+
+test("a copy id that is short, uppercase, holds / or .., or names no directory refuses", (t) => {
+  const h = hub(t);
+  for (const copy of ["a".repeat(39), "A".repeat(40), `${"a".repeat(19)}/${"a".repeat(20)}`, `..${"a".repeat(38)}`]) {
+    refuses(unit(h, { copy }), /--copy must be a full 40-character lower-case commit id/);
+  }
+  refuses(unit(h, { copy: "c".repeat(40) }), /no copy directory/);
+});
+
+test("library refuses a privileged-floor miss, a bad proof pair and every flag outside its set", (t) => {
+  const h = hub(t);
+  const base = libraryFlags(h);
+  const without = (...names) => {
+    const out = [];
+    for (let i = 0; i < base.length; i++) {
+      if (names.includes(base[i])) { if (base[i] !== "--send") i++; continue; }
+      out.push(base[i]);
+    }
+    return out;
+  };
+  refuses(unit(h, { flags: base.map((f) => (f === "443" ? "7332" : f)) }), /--port must be 1\.\.1023/);
+  refuses(unit(h, { flags: without("--proof-header", "--proof-file") }), /serve flag --proof-header is required/);
+  refuses(unit(h, { flags: base.map((f) => (f === "X-Auth-User" ? "X-Authentik-Uid" : f)) }), /must be an Authentik uid/);
+  assert.equal(unit(h, { flags: base.map((f) => (f === "X-Auth-User" ? "X-Authentik-Uid" : f === "melanie" ? "0".repeat(64) : f)) }).code, 0);
+  rmSync(busFile(h));
+  rmSync(webuiFile(h));
+  for (const [flag, value, pattern] of [
+    ["--tester-port", "7333", /case2-unit.sh retires tester TCP; use --tester-socket/],
+    ["--tester-socket", null, /the library profile refuses --tester-socket/],
+    ["--checkout", "/srv/x", /refusing --checkout/],
+    ["--board", "http://127.0.0.1:7331", /refusing --board/],
+    ["--sso", null, /refusing --sso/],
+    ["--nonsense", "1", /unknown serve flag: --nonsense/],
+  ]) {
+    refuses(unit(h, { flags: [...base, flag, ...(value === null ? [] : [value])] }), pattern);
+  }
+  refuses(unit(h, { flags: base.map((f) => (f === "acme" ? "other" : f)) }), /serve --business other is not the unit's business acme/);
+  refuses(unit(h, { extra: ["--pm"] }), /the library profile refuses --pm/);
+  refuses(unit(h, { extra: ["--claude", TRUE_BIN] }), /the library profile refuses --claude/);
+
+  chmodSync(h.proof, 0o644);
+  refuses(unit(h), /mode 0600 or 0400, not 644/);
+  chmodSync(h.proof, 0o600);
+  const link = join(h.secrets, "proof-link");
+  symlinkSync(h.proof, link);
+  refuses(unit(h, { flags: base.map((f) => (f === h.proof ? link : f)) }), /must not be a symlink/);
+  const dataRoot = join(h.home, ".mosaic-dev");
+  mkdirSync(dataRoot, { recursive: true });
+  const outside = join(dataRoot, "proof");
+  writeFileSync(outside, "made-up-proof\n");
+  chmodSync(outside, 0o600);
+  refuses(unit(h, { flags: base.map((f) => (f === h.proof ? outside : f)) }), /must be under .*secrets, outside the data root/);
+  assert.equal(existsSync(busFile(h)), false);
+});
+
+// A non-root test can't make a root-owned file under the scratch home, so the
+// owner case names another uid in the passwd database instead.
+test("library refuses a proof file not owned by <user>'s uid", (t) => {
+  const h = hub(t, { uid: UID + 4242 });
+  refuses(unit(h), new RegExp(`proxy proof file must be owned by mosaic \\(uid ${UID + 4242}\\)`));
+});
+
+test("factory refuses duplicate socket, a missing --port or --business, and each proxy flag", (t) => {
+  const h = hub(t);
+  refuses(unit(h, { profile: "factory", flags: [...factoryFlags(), '--tester-socket'] }), /given twice/);
+  refuses(unit(h, { profile: "factory", flags: [...factoryFlags(), '--port', '443'] }), /given twice/);
+  refuses(unit(h, { profile: "factory", flags: ["--business", "acme"] }), /serve flag --port is required/);
+  refuses(unit(h, { profile: "factory", flags: ["--port", "443"] }), /serve flag --business is required/);
+  for (const [flag, value] of [["--public-host", "x.example"], ["--auth-header", "X-A"], ["--allow-user", "u"], ["--proof-header", "X-P"], ["--proof-file", h.proof], ["--send", null]]) {
+    refuses(unit(h, { profile: "factory", flags: [...factoryFlags(), flag, ...(value === null ? [] : [value])] }), new RegExp(`the factory profile refuses ${flag}`));
+  }
+  for (const [flag, value, pattern] of [["--checkout", "/srv/x", /refusing --checkout/], ["--board", "http://127.0.0.1:7331", /refusing --board/], ["--sso", null, /refusing --sso/], ["--nonsense", "1", /unknown serve flag/]]) {
+    refuses(unit(h, { profile: "factory", flags: [...factoryFlags(), flag, ...(value === null ? [] : [value])] }), pattern);
+  }
+});
+
+test("row253 factory refuses retired TCP and a value after the socket marker", (t) => {
+  const h = hub(t);
+  refuses(unit(h, { profile: "factory", flags: ['--port','443','--business','acme','--tester-port','7333'] }), /case2-unit.sh retires tester TCP; use --tester-socket/);
+  refuses(unit(h, { profile: 'factory', flags: [...factoryFlags(), '7333'] }), /unknown serve flag: 7333/);
+});
+
+test("factory refuses a --claude that is relative, not root-owned or under <home>, and a re-install with another --pm or --claude", (t) => {
+  const h = hub(t);
+  refuses(unit(h, { profile: "factory", extra: ["--claude", "bin/claude"] }), /--claude must be an absolute path/);
+  const mine = script(join(h.root, "opt", "claude"), "exit 0");
+  refuses(unit(h, { profile: "factory", extra: ["--claude", mine] }), /--claude: .* is not owned by root/);
+  const inside = script(join(h.home, "bin", "claude"), "exit 0");
+  refuses(unit(h, { profile: "factory", extra: ["--claude", inside] }), /--claude must be outside/);
+
+  assert.equal(unit(h, { profile: "factory", extra: ["--pm", "--claude", TRUE_BIN] }).code, 0);
+  refuses(unit(h, { profile: "factory", extra: ["--claude", TRUE_BIN] }), /--pm and --claude must equal the installed ones|ExecStart= must be exactly once/);
+  refuses(unit(h, { profile: "factory", extra: ["--pm"] }), /Environment= lines must be exactly|differs from the render/);
+  refuses(unit(h, { profile: "factory", extra: ["--pm", "--claude", USR_NODE] }), /Environment= lines must be exactly|differs from the render/);
+});
+
+// ---- case2-precheck.sh ----
+
+// A scratch user for the precheck: a config, a business file, an installed Console unit,
+// fakes on PATH and a fake /proc/sys.
+function host(t, { roles = {}, vars = {}, keyFile = `ZAI_API_KEY=${FIXTURE_KEY}\n`, port = "443", busClaude = null } = {}) {
+  const root = tmp(t, "case2-pre-");
+  const home = join(root, "home");
+  const configDir = join(home, ".config", "mosaic-dev");
+  const config = writeJson(join(configDir, "config.json"), {
+    configVersion: 1,
+    environment: "production",
+    dataRoot: join(home, ".mosaic-dev"),
+    execution: { backend: "docker", provider: "zai", model: "glm-5.3-flash", adapter: "pi" },
+  });
+  const doc = businessDoc(root);
+  doc.roles.cto.vars = { harness: "pi" };
+  for (const [name, v] of Object.entries(roles)) doc.roles[name].vars = v;
+  Object.assign(doc.vars, vars);
+  writeJson(join(configDir, "businesses", "acme.json"), doc);
+  const secrets = join(configDir, "secrets");
+  mkdirSync(secrets, { recursive: true, mode: 0o700 });
+  if (keyFile !== null) {
+    writeFileSync(join(secrets, "claude-session.env"), keyFile);
+    chmodSync(join(secrets, "claude-session.env"), 0o600);
+  }
+  const units = join(root, "units");
+  mkdirSync(units);
+  writeFileSync(join(units, "mosaic-webui.service"), `[Service]\nExecStart=/usr/bin/node /x/cli.mjs serve --port ${port} --business acme\n`);
+  writeFileSync(join(units, "[email protected]"), `[Service]\nEnvironment=PATH=/usr/bin\n${busClaude ? `Environment=MOSAIC_CLAUDE_BIN=${busClaude}\n` : ""}`);
+  const sys = join(root, "sys");
+  mkdirSync(join(sys, "net", "ipv4"), { recursive: true });
+  mkdirSync(join(sys, "kernel"), { recursive: true });
+  writeFileSync(join(sys, "net", "ipv4", "ip_unprivileged_port_start"), "1024\n");
+  writeFileSync(join(sys, "kernel", "apparmor_restrict_unprivileged_userns"), "1\n");
+  const bin = join(root, "bin");
+  const me = spawnSync("id", ["-un"], { encoding: "utf8" }).stdout.trim();
+  script(join(bin, "getent"), `[ "$1" = passwd ] && [ "$2" = '${me}' ] && echo '${me}:x:${UID}:${GID}::${home}:/bin/bash'`);
+  script(join(bin, "sudo"), "exit 1");
+  script(join(bin, "id"), `if [ "$1" = -G ]; then echo "\${CASE2_TEST_GROUPS:-${GID}}"; else exec /usr/bin/id "$@"; fi`);
+  script(join(bin, "node"), `if [ "$1" = --version ]; then echo "\${CASE2_TEST_NODE:-v24.3.0}"; exit 0; fi\nexec '${process.execPath}' "$@"`);
+  script(join(bin, "bwrap"), `exit "\${CASE2_TEST_BWRAP:-0}"`);
+  return { root, home, configDir, config, secrets, units, sys, bin, dataRoot: join(home, ".mosaic-dev") };
+}
+
+// A fake claude: replace answers with the marker and a small prompt; append answers with a large one;
+// nomarker answers with a small prompt and no marker; text answers with plain text, not JSON.
+function fakeClaude(dir, kind) {
+  return script(join(dir, "claude"), `[ "$1" = --version ] && { echo "9.9.9 (Claude Code, ${kind} fake)"; exit 0; }
+file=''
+while [ $# -gt 0 ]; do [ "$1" = --system-prompt-file ] && file="$2"; shift; done
+marker="$(awk '{ print $NF }' "$file")"
+${kind === "nomarker" ? "marker=something-else" : ""}
+${kind === "text" ? 'echo "$marker"; exit 0' : ""}
+tokens=${kind === "append" ? 9000 : 40}
+printf '{"result":"%s","usage":{"input_tokens":%s,"cache_read_input_tokens":0}}\\n' "$marker" "$tokens"`);
+}
+
+// This host may have a claude in /usr/bin, so this PATH links every /usr/bin entry but that one.
+function pathWithoutClaude(x) {
+  const usr = join(x.root, "usr-bin");
+  mkdirSync(usr);
+  for (const name of readdirSync("/usr/bin")) if (name !== "claude") symlinkSync(join("/usr/bin", name), join(usr, name));
+  return `${x.bin}:${usr}`;
+}
+
+function precheck(x, { profile = "library", env = {}, path } = {}) {
+  const r = spawnSync(PRECHECK, ["--business", "acme", "--profile", profile], {
+    encoding: "utf8",
+    timeout: 60000,
+    env: {
+      PATH: path ?? `${x.bin}:/usr/bin:/bin`,
+      HOME: x.home,
+      MOSAIC_CONFIG: x.config,
+      CASE2_UNIT_DIR: x.units,
+      CASE2_PROC_SYS: x.sys,
+      CASE2_GETENT: join(x.bin, "getent"),
+      ...env,
+    },
+  });
+  const out = r.stdout + r.stderr;
+  assert.doesNotMatch(out, new RegExp(FIXTURE_KEY), "the precheck printed the fixture key");
+  return { code: r.status, out };
+}
+
+function blocked(r, pattern) {
+  assert.equal(r.code, 1, r.out);
+  assert.match(r.out, pattern);
+}
+
+test("the precheck passes on a good host and prints free memory, without the key", (t) => {
+  const x = host(t);
+  const r = precheck(x);
+  assert.equal(r.code, 0, r.out);
+  assert.match(r.out, /ok {6}config validates/);
+  assert.match(r.out, /ok {6}bus\.tester is off/);
+  assert.match(r.out, /ok {6}net\.ipv4\.ip_unprivileged_port_start 1024 is above the Console's port 443/);
+  assert.match(r.out, /claude-session\.env sets ZAI_API_KEY/);
+  assert.match(r.out, /free memory: \d+ MiB/);
+  assert.doesNotMatch(r.out, /claude .*fake|marker/);
+});
+
+test("the precheck refuses each failed host check", (t) => {
+  blocked(precheck(host(t), { env: { CASE2_TEST_NODE: "v22.22.2" } }), /REFUSED node v22\.22\.2 is older than 24/);
+  blocked(precheck(host(t), { env: { CASE2_TEST_GROUPS: `${GID} 998` } }), /REFUSED id -G prints more than one group/);
+  const sudo = host(t);
+  script(join(sudo.bin, "sudo"), "exit 0");
+  blocked(precheck(sudo), /REFUSED sudo -n true succeeds/);
+  blocked(precheck(host(t), { env: { XDG_DATA_HOME: "/elsewhere" } }), /REFUSED XDG_DATA_HOME is \/elsewhere/);
+  const home = host(t);
+  assert.equal(precheck(home, { env: { XDG_DATA_HOME: `${home.home}/.local/share` } }).code, 0);
+  blocked(precheck(host(t), { env: { HOME: "/tmp" } }), /REFUSED HOME is \/tmp/);
+
+  const runs = host(t);
+  mkdirSync(join(runs.dataRoot, "launches", "acme"), { recursive: true, mode: 0o755 });
+  chmodSync(join(runs.dataRoot, "launches", "acme"), 0o755);
+  blocked(precheck(runs), /REFUSED run root .* is not a 0700 directory \(mode 755\)/);
+  chmodSync(join(runs.dataRoot, "launches", "acme"), 0o700);
+  assert.match(precheck(runs).out, /ok {6}run root .* is 0700/);
+
+  const bad = host(t);
+  writeFileSync(bad.config, "{ not json");
+  blocked(precheck(bad), /REFUSED config:/);
+});
+
+test("the precheck refuses a user missing from passwd, a business file that does not load, and a symlinked run root", (t) => {
+  const nouser = host(t);
+  script(join(nouser.bin, "getent"), "exit 2");
+  blocked(precheck(nouser), /REFUSED user: no .* in the passwd database/);
+
+  const unparsed = host(t);
+  writeFileSync(join(unparsed.configDir, "businesses", "acme.json"), "{ not json");
+  blocked(precheck(unparsed), /REFUSED business file: cannot read .*acme\.json/);
+  const gone = host(t);
+  rmSync(join(gone.configDir, "businesses", "acme.json"));
+  blocked(precheck(gone), /REFUSED business file: cannot read .*acme\.json: ENOENT/);
+  const invalid = host(t);
+  const file = join(invalid.configDir, "businesses", "acme.json");
+  const doc = JSON.parse(read(file));
+  doc.notAField = true;
+  writeJson(file, doc);
+  const r = precheck(invalid);
+  blocked(r, /REFUSED business file: /);
+  assert.doesNotMatch(r.out, /REFUSED business file: cannot read/);
+
+  // stat follows a link, so a link to a 0700 directory would read as 0700.
+  const link = host(t);
+  const target = join(link.root, "elsewhere");
+  mkdirSync(target, { mode: 0o700 });
+  chmodSync(target, 0o700);
+  mkdirSync(join(link.dataRoot, "launches"), { recursive: true });
+  symlinkSync(target, join(link.dataRoot, "launches", "acme"));
+  blocked(precheck(link), /REFUSED run root .* is a symlink/);
+});
+
+test("a bwrap that fails refuses and prints the sysctl and where bwrap is", (t) => {
+  const x = host(t);
+  blocked(precheck(x, { env: { CASE2_TEST_BWRAP: "1" } }), new RegExp(`REFUSED bwrap .* failed; bwrap: ${join(x.bin, "bwrap")}; kernel\\.apparmor_restrict_unprivileged_userns: 1`));
+});
+
+test("an unprivileged port floor at or below the Console's port refuses, and so does a missing Console unit", (t) => {
+  for (const floor of ["443", "80"]) {
+    const x = host(t);
+    writeFileSync(join(x.sys, "net", "ipv4", "ip_unprivileged_port_start"), `${floor}\n`);
+    blocked(precheck(x), new RegExp(`REFUSED net\\.ipv4\\.ip_unprivileged_port_start is ${floor}, at or below the Console's port 443`));
+  }
+  const x = host(t);
+  rmSync(join(x.units, "mosaic-webui.service"));
+  blocked(precheck(x), /REFUSED no installed Console unit/);
+  const noPort = host(t);
+  writeFileSync(join(noPort.units, "mosaic-webui.service"), "[Service]\nExecStart=/usr/bin/node /x/cli.mjs serve --business acme\n");
+  blocked(precheck(noPort), /REFUSED .*mosaic-webui\.service has no --port in its ExecStart/);
+  const noFloor = host(t);
+  rmSync(join(noFloor.sys, "net", "ipv4", "ip_unprivileged_port_start"));
+  blocked(precheck(noFloor), /REFUSED cannot read net\.ipv4\.ip_unprivileged_port_start/);
+});
+
+test("bus.tester: library refuses it on, factory needs it on, and factory refuses a library business", (t) => {
+  blocked(precheck(host(t, { vars: { "bus.tester": true } })), /REFUSED bus\.tester is on; the library profile needs it off/);
+  blocked(precheck(host(t), { profile: "factory" }), /REFUSED bus\.tester is off; the factory profile needs it on/);
+  const on = precheck(host(t, { vars: { "bus.tester": true } }), { profile: "factory" });
+  assert.equal(on.code, 0, on.out);
+  const lib = host(t, { vars: { "bus.tester": true } });
+  const file = join(lib.configDir, "businesses", "acme.json");
+  const doc = JSON.parse(read(file));
+  doc.projects.stack.kind = "library";
+  writeJson(file, doc);
+  blocked(precheck(lib, { profile: "factory" }), /REFUSED profile-library-business: .* projects stack are library projects/);
+});
+
+test("the claude check runs only for a claude-code instance, and refuses a claude that appends or answers wrong", (t) => {
+  // No claude-code instance and no claude anywhere on PATH: the precheck passes.
+  const none = host(t);
+  const r = precheck(none, { path: pathWithoutClaude(none) });
+  assert.equal(r.code, 0, r.out);
+  assert.doesNotMatch(r.out, /--system-prompt-file|claude is installed/);
+
+  const good = host(t, { roles: { cto: { harness: "claude-code" } } });
+  fakeClaude(good.bin, "replace");
+  const pass = precheck(good);
+  assert.equal(pass.code, 0, pass.out);
+  assert.match(pass.out, /claude .*9\.9\.9 \(Claude Code, replace fake\)/);
+  assert.match(pass.out, /ok {6}claude replaces its prompt with --system-prompt-file \(40 input tokens\)/);
+
+  const bad = host(t, { roles: { cto: { harness: "claude-code" } } });
+  fakeClaude(bad.bin, "append");
+  blocked(precheck(bad), /REFUSED claude adds to its own prompt with --system-prompt-file: 9000 input tokens/);
+
+  const nomarker = host(t, { roles: { cto: { harness: "claude-code" } } });
+  fakeClaude(nomarker.bin, "nomarker");
+  blocked(precheck(nomarker), /REFUSED claude's reply to the marker prompt lacks the marker \(40 input tokens\)/);
+
+  const text = host(t, { roles: { cto: { harness: "claude-code" } } });
+  fakeClaude(text.bin, "text");
+  blocked(precheck(text), /REFUSED claude gave no JSON reply to the marker prompt/);
+
+  const missing = host(t, { roles: { cto: { harness: "claude-code" } } });
+  blocked(precheck(missing, { path: pathWithoutClaude(missing) }), /REFUSED an instance runs claude-code and no claude is installed/);
+});
+
+test("the claude check runs the bus unit's MOSAIC_CLAUDE_BIN over claude on PATH", (t) => {
+  const pinned = join(tmp(t, "case2-claude-"), "pinned");
+  const replace = fakeClaude(pinned, "replace");
+  const x = host(t, { roles: { cto: { harness: "claude-code" } }, busClaude: replace });
+  fakeClaude(x.bin, "append");
+  const r = precheck(x);
+  assert.equal(r.code, 0, r.out);
+  assert.match(r.out, /replace fake/);
+
+  const pinnedBad = join(tmp(t, "case2-claude-"), "pinned");
+  const append = fakeClaude(pinnedBad, "append");
+  const y = host(t, { roles: { cto: { harness: "claude-code" } }, busClaude: append });
+  fakeClaude(y.bin, "replace");
+  blocked(precheck(y), /REFUSED claude adds to its own prompt/);
+});
+
+test("the session env file refuses when missing, open to others, a symlink, empty, or emptied by a later line", (t) => {
+  blocked(precheck(host(t, { keyFile: null })), /REFUSED an instance's provider is zai and .*claude-session\.env is missing/);
+  const open = host(t);
+  chmodSync(join(open.secrets, "claude-session.env"), 0o644);
+  blocked(precheck(open), /REFUSED .*claude-session\.env must be owned by .* at 0600 \(mode 644\)/);
+  const link = host(t, { keyFile: null });
+  const real = join(link.root, "real.env");
+  writeFileSync(real, `ZAI_API_KEY=${FIXTURE_KEY}\n`);
+  chmodSync(real, 0o600);
+  symlinkSync(real, join(link.secrets, "claude-session.env"));
+  blocked(precheck(link), /REFUSED .*claude-session\.env is a symlink/);
+  blocked(precheck(host(t, { keyFile: "ZAI_API_KEY=\n" })), /REFUSED .*sets no nonempty ZAI_API_KEY/);
+  blocked(precheck(host(t, { keyFile: `ZAI_API_KEY=${FIXTURE_KEY}\nZAI_API_KEY=\n` })), /REFUSED .*sets no nonempty ZAI_API_KEY/);
+  const quoted = precheck(host(t, { keyFile: `ZAI_API_KEY=\nZAI_API_KEY="${FIXTURE_KEY}"\n` }));
+  assert.equal(quoted.code, 0, quoted.out);
+});
+
+// ---- the bind test (mos-1100) ----
+
+// A session can't take the Console's port: inside the sandbox a real session gets, a bind below
+// 1024 fails with EACCES, and the same bind on a free port of 1024 or above succeeds.
+const sandboxSkip = sandboxProblem() ?? false;
+const LOW_PORT = 980;
+test("inside a session's sandbox a bind below 1024 fails with EACCES, and a bind on a free high port succeeds", { skip: sandboxSkip, timeout: 30000 }, async (t) => {
+  const floor = Number(read("/proc/sys/net/ipv4/ip_unprivileged_port_start").trim());
+  assert.ok(floor > LOW_PORT, `this host's net.ipv4.ip_unprivileged_port_start is ${floor}, at or below the test port ${LOW_PORT}, so the test can't show the sandbox refuses it`);
+  const root = tmp(t, "c2b-");
+  const runDir = join(root, "run");
+  const workspace = join(root, "ws");
+  mkdirSync(runDir);
+  mkdirSync(workspace);
+  mkdirSync(join(runDir, "bundle"));
+  writeFileSync(join(runDir, "session.json"), "{}");
+  const adapter = join(root, "adapter.sh");
+  const brokerSocket = join(root, "broker.sock");
+  writeFileSync(adapter, "");
+  writeFileSync(brokerSocket, "");
+  prepareRun(runDir);
+  const list = binds({ runDir, workspace, adapter, harnessMounts: [], brokerSocket });
+  const high = await new Promise((done) => {
+    const s = createServer().listen(0, "127.0.0.1", () => { const { port } = s.address(); s.close(() => done(port)); });
+  });
+  const bindIn = (port) => {
+    const code = `require("net").createServer().on("error", (e) => { console.log(e.code); process.exit(0); }).listen(${port}, "127.0.0.1", function () { console.log("bound"); this.close(); });`;
+    const argv = sandboxArgv(list, runDir, [process.execPath, "-e", code], { business: "acme", role: "coder" });
+    const r = spawnSync(argv[0], argv.slice(1), { encoding: "utf8", timeout: 10000 });
+    assert.equal(r.status, 0, r.stderr);
+    return r.stdout.trim();
+  };
+  assert.equal(bindIn(LOW_PORT), "EACCES");
+  assert.equal(bindIn(high), "bound");
+});
@@ -0,0 +1,463 @@
+# Deferred list
+
+One line per item, written from evidence, never from inertia. Add a line
+when a gap is found and not fixed in the current piece; strike it (move to
+Done at the bottom with the commit) when a piece closes it. Nothing here
+starts on its own; a line becomes a piece only when Jason calls it. Check it
+at every gate. Started 2026-09-12 during the control board MVP.
+
+## Open
+
+- **Inherited Discord engine test intermittency during #1512 review.** Frozen
+  serialized run recorded a tool-turn engine assertion failure and then timed
+  out at 120s. A later full TAP run with a 15s test deadline passed 351/351.
+  Rocko isolated the busy/settled-event test race and missing failure cleanup;
+  Darkwing independently reproduced the event-split assertion. Rocko also reported
+  a timeout-log test race and a separate engine followUp-after-timeout defect.
+  No live incident established. Row21 owner orch-01 notified; no Discord source
+  takeover. Not assumed identical to earlier concurrent hangs.
+  Integration held pending owner disposition; logs and scope in
+  `agents/darkwing/work/relaunch-activity/r1-review.md`. (2026-09-15)
+  Outcome 2026-09-26: 1685deb4 fixed the busy/settled race and the engine no
+  longer sends a follow-up (held prompts). A re-run of the frozen candidate
+  against 21e3e908 passed the serial acceptance command 397/397 three times.
+  Two engine failures remain when tests run concurrently, and they reproduce on
+  clean HEAD without the #1512 files, so they are #1509's (entry below). Sage
+  ruled that #1512 integrates on the serial evidence; it landed in af4203ca.
+  Record: `agents/darkwing/work/relaunch-activity/rerun-2026-09-26.md`.
+
+
+
+- **Registration has no "set by" field.** `mosaic seat task` records the
+  task and `updatedAt` but not who set it, so a human session and the
+  orchestrator look the same on the board. One-line record change; rides
+  with the orchestrator assignment piece. (2026-09-12, #1504)
+- **Usage-limit notice was missed.** Jason reports Rocko exhausted usage without
+  Jason seeing the notice, and is now available again. Investigate where the
+  notice appeared and what operator notification is missing as part of Claude
+  console integration. User-reported, not independently reproduced; no root
+  cause established. Keep outside #1512's relaunch-display scope. (2026-09-15)
+- **Claude Code seats register but get no board row.** Rocko has no Pi
+  session log, and rows come only from Pi logs. Needs a second row source
+  or a Claude-side log reader. (2026-09-12, darkwing's #1504 report)
+  2026-09-15 #1511 live-test preflight reconfirmed no Rocko row: expected
+  `.pi/state/rocko/sessions` discovery directory absent. Its existing repo
+  registration names dead PID 185602, while the verified native lock owner is
+  3707667. No registration repair, discovery expansion or relaunch performed;
+  test write refused before mutation. Evidence:
+  `agents/darkwing/work/task-attribution/backend-live-verification.json`.
+- **Fleet seats (`~/.mosaic`) stay on the old launchers.** No registration,
+  no board reply, no `seat task`. Moving them is the stress test and comes
+  after the WebUI and fleet launch work. (Jason, 2026-09-12)
+- **Comms skill has no rule for senders without a pane.** The board trailer
+  covers it today; if another pane-less sender appears, put the rule in
+  `skills/ms-communications` instead of a second trailer. (2026-09-12, #1505)
+- **Board: multiple sessions per seat, stopping seats, auth beyond
+  loopback.** Out of scope for the MVP by the plan; listed so they are not
+  forgotten. (plan page, Boundaries)
+- **`MOSAIC-STACK-D-001` is Answered, not Completed.** Mark `--completed` in
+  jarvis-brain once Jason says the board answers "who is waiting on me".
+  (2026-09-12)
+- **Uncommitted working tree.** `AGENTS.md` autonomy section,
+  `agents/README.md` Sage row, Dewey's `work/wui` docs and evidence,
+  `docs/plans/reviews/2026-09-08..10_*`, `skills/ms-{arena,blast-radius,
+  board,executive-update,git-operations,technical-writing}`. Jason's edits
+  from before 2026-09-12; they ride along in the next commit that touches
+  them unless staged on purpose. (2026-09-12)
+- **Fleet debt (orch-01, `~/.mosaic`):** `sweep-commit.sh` deny-list regex
+  skips `launch.env`; needs the fix plus a regression test. (2026-09-12)
+- **Parked, not cancelled:** Dewey D05 dashboard mockup work beyond design 3,
+  registry increment 3 (headless identity-env leak), new seat directories.
+  (plan page, 2026-09-12 parking note)
+
+- **Gitea helper response-file hardening.** Predictable `/tmp/gitea-api-response.$$`
+  has no explicit 0600 mode; use `mktemp` with cleanup in a separately reviewed
+  pass. Credential validation and later reread also have a race window. Other
+  non-blocking ledger review notes remain in
+  `reviews/2026-09-12_ledger-verdict.md`. No change beyond the reviewed GET
+  cleanup fix in this piece. Filbert, LEDGER-1506-R1, 2026-09-12, #1506.
+
+- **One shared checkout for every seat and the coordinator.** Any `git add`
+  of a shared file (CURRENT.md, SESSIONS.md, the plan page) commits another
+  seat's in-progress edit under the wrong commit; it happened at f80404f5
+  (dewey's CURRENT.md status note went in with the piece 5 brief, harmless
+  but unowned). Fix candidates: per-seat worktrees, or shared files edited
+  only by the seat named in CURRENT.md. (2026-09-12)
+
+- **Console mockup fields absent from the board API.** Controller, generation,
+  config fingerprint, turn count, goal/report and activity stream are omitted.
+  Workspace paths are shown as board data, not invented registered workspace
+  nodes. Launch, observe, stop, full transcript navigation, command palette and
+  other screens are absent. Existing palette/appearance switches remain on the
+  single page. Revisit only with a new brief. (2026-09-13 UTC, #1507)
+
+- **Board send can turn into a Pi slash command.** `tools/tmux`
+  `send-message.sh` pastes onto whatever is already in Pi's composer without
+  clearing it. On Jason's 2026-09-26 20:10:57Z send, a leftover "/" landed in
+  front of the agent-send header. Pi read it as plain text that time, but the
+  same path could run a board reply as a slash command. Belongs to CHAT-03I/B3.
+  No tools/tmux change until that piece. Found by Dewey in the CHAT-02 brief
+  evidence. (2026-09-26, #1507)
+
+- **Discord wedge restarts have no cumulative stop.** Since 6b R2, a wedged
+  pi ends the connector with exit 1, and the unit restarts it. With
+  turnTimeoutSeconds 600, one cycle takes at least 645 s, longer than the
+  600 s StartLimit window. So a pi that wedges on every prompt restarts once
+  per prompt and never hits the limit. It only happens when someone sends a
+  message, and that person gets an error reply. Sage accepted it for now. The
+  fix is a separate policy (a wedge count kept across restarts). (2026-09-26,
+  #1509, Rocko 6b R2 review)
+- **Connector does not journal the source it started from.** The unit runs
+  from the live checkout, so an automatic restart loads whatever Discord
+  source is in the tree, even uncommitted source. Rocko recommends a startup
+  journal line with HEAD, the dirty state of `packages/discord` and a digest
+  of the runtime files. Until then the rule is that unreviewed Discord source
+  stays uncommitted in the tree only as long as a review needs it.
+  (2026-09-26, #1509)
+- **Index-export suite runs leave Docker networks behind.** Each export
+  directory becomes a compose project, and its `<dir>_default` network
+  stays after the run. On 2026-09-26 the host ran out of address pools. The
+  task and release suites then failed 31 and 3 tests with "all predefined
+  address pools have been fully subnetted". Sage removed its own five stale
+  networks. The dw-* ones are still there. Fix: the export recipe, or the
+  suites, removes the project network on exit. (2026-09-26)
+  2026-09-27: it happened again on the Piece D candidate (task 31 and
+  release 3 failures). Sage removed 12 leftover export networks from
+  other seats, each checked for zero attached containers first, and both
+  suites then passed. Still open.
+
+- **Ledger T3 read: snapshot isolation has no test.** `readT3` runs every
+  query in one read transaction, but no test proves a write landing during
+  the read stays invisible. Filbert's note 4 on the Gate F build (e47ec6da).
+  Notes 1 to 3 go to Darkwing's follow-up. (2026-09-26, #1506)
+- **A T3 sender role with spaces counts as human.** The SetSpark lead's
+  reply to Sage (21:41:24Z) used the role "main content-engine agent". The
+  6a rule requires a one-word role, so the ledger counts that message as
+  human in Sage's row. Gate F reads only Filbert's row, so it is not
+  affected. Filbert found it through the live diagnostic (14 went to 15).
+  Sage asked the SetSpark lead to use a one-word role. The rule stays as
+  it is. (2026-09-26, #1506)
+
+- **Queue tests: the cold-start failure came back (reopened).** Row 33
+  closed this as not reproduced in 20 idle cold runs. On 2026-10-04 Sage's
+  index export of the row 33 candidate ran the nine suites, then
+  `node --test packages/queue/tests/`, and got 147 passed, 1 failed. Sage's
+  recipe threw the output away, so again nobody knows which test failed.
+  Ten more runs all passed 148/148: three reruns in the same export, four
+  under parallel suite load, and three fresh exports run straight after
+  `test-queue.sh`. It needs a first run on a fresh tree after a full
+  suite pass, and even then it's rare. Darkwing's n2 on row 33 (the cold
+  runs were idle) was right. Next time: Sage's export recipe keeps the
+  node test output in a file, so the first failure has a name. Then fix it
+  as its own row. (2026-10-04, #1508)
+- **Queue: `add --issue N` also sets closes to N.** Follow-up rows under
+  an umbrella issue, like rows 31 and 33 under #1508, would close the issue
+  when they finish. Sage narrowed both by hand (revs 36 and 43). Either
+  `add` takes `--closes` or the lead checks closes on every add. Not
+  urgent while Sage adds the rows. (2026-10-04, #1508)
+
+- **Ledger metric call can orphan curl.** The metric call in
+  `packages/ledger/src/ledger.mjs` still relies on execFileSync's
+  timeout, which kills the helper but can leave curl running. E's queue
+  calls already use `timeout -s KILL`; the metric call should match.
+  (2026-09-27, #1508)
+- **Ledger: a missing `timeout` command reads as a Gitea failure.** With
+  no `timeout` on PATH the queue issue calls report "credential or Gitea
+  request failure". Optional test and clearer message. Filbert, E r2.
+  (2026-09-27, #1508)
+- **`review record` doesn't check which issue the verdict comment is on.**
+  Row 5 round 1's request (26671) and Filbert's verdict (26683) are on
+  #1507. Darkwing's verdict 26681 went to #1508, and `review record`
+  accepted it, because only `review resolve` reads the comment back
+  (`checkComment` in `packages/queue/src/review.mjs`). The receipt
+  points at a real comment on the wrong issue. Sage posted a pointer on
+  #1507 (comment 26685). Fix: have `record` check the comment's issue and author the way
+  `resolve` does, or refuse a comment id it can't verify. Found by
+  Filbert. (2026-10-04, #1508)
+- **Host seats launch Pi with `--approve`.** A future `.pi/SYSTEM.md` or
+  `.pi/settings.json` in the checkout would load in every host seat. This
+  is latent, since neither file exists today. Fix in
+  `scripts/agent-host-dev.sh`: pass `--no-approve` and an explicit system
+  prompt. Filbert, meta-harness survey section 8.4. (2026-10-04)
+- **Workers can read provider keys.** The worker container passes
+  `ZAI_API_KEY` and `ANTHROPIC_API_KEY` in the environment, which Pi's
+  `bash` inherits, and Pi's `read` can open the mounted `auth.json`.
+  Slice 1 role tokens stay in the broker (lead decision 47). The workers'
+  own exposure needs a separate piece. Filbert, survey section 8.6.
+  (2026-10-04)
+- **CHAT-03 I1 round 2 follow-ups, for the I3 brief.** Neither reviewer
+  held any of these as blocking (Darkwing comment 26690, Filbert comment
+  26694 on #1507). Four of the five are closed by slice 1 S5 (see Done);
+  this one stays open.
+  - No test proves that the processes are listed only after the cgroup
+    is frozen. The code waits for `frozen 1` in `cgroup.events`, and
+    both Filbert and Dewey confirmed it by reading it. Mutants r2-B5b and
+    C4 survive. Proposed: a test-only hold after `members`, or a FUSE or
+    privileged fixture. Filbert F1.
+  (2026-10-04, #1507)
+- **CHAT-03 `engine.envKeys` accepts founder credential names.**
+  `CREDENTIAL_NAME` in `packages/conversation/src/pi-pin.mjs` matches any
+  `*_API_KEY` or `*_TOKEN`, including `GITEA_TOKEN` and `GH_TOKEN`, which
+  the S6 runner refuses as founder credentials (REQ-CRED-2). Nothing
+  builds a Controller outside the tests yet. Whoever wires the entry point
+  narrows the pattern to provider names or checks the founder list.
+  Filbert N2 on #1522. (2026-10-10)
+- **`test-task.sh` makes a live Pi call without the Docker guard.** The
+  "user recall" block near line 478 runs `run-task.sh` with no
+  availability check, so a run with Docker unavailable fails "user recall
+  run succeeds" and "recalled user name" (26 pass, 2 fail). The other
+  live groups skip. Rocko hit it during the S2 suites. Wrap the block in
+  the same guard as the other live groups, so a seat without provider
+  access gets clean skips. (2026-10-04, #1519)
+- **`node --test <dir>/` fails on Node 24.** Node 24 reads a directory
+  argument as a module, so every package's test command in that form
+  fails there, while Node 26 accepts it. The glob form
+  (`node --test 'packages/x/tests/*.test.mjs'`) works on both. Package
+  READMEs, `docs/TOOLS.md` and Sage's suite recipe should use the glob
+  form wherever Node 24 is a target. Darkwing, S1 packet. (2026-10-04,
+  #1518)
+- **`stack-upgrade.sh` doesn't check `$REPO`.** Nothing confirms the
+  source checkout is root-owned or that its tree is clean before the
+  upgrade builds from it. Filbert N2 on row 233 (29922, #1735).
+  (2026-10-21)
+- **`stack-upgrade.sh` has no signal handling between A2 and A5.** A HUP,
+  INT or TERM in that stretch leaves the run failed closed, but recovery
+  is by hand. A trap that writes the stop point and the recovery step to
+  the log would make it a sheet step. Filbert N3 on row 233 (29922,
+  #1735). (2026-10-21)
+- **`checkCreative` doesn't refuse `credentials`.** Row 213's
+  `checkCreative` (packages/business/src/role.mjs:143 at 2d2ad2760)
+  limits a creative role's tools, authority and messaging, but a role
+  file that gave companion or research a credential would still load.
+  The business file could then map a credential to that instance
+  (business.mjs:157). Nobody has traced whether a mapped credential
+  reaches the run's environment. The decision paths stay closed (M6),
+  but a creative role with `web` holding a live token is a wider channel
+  than design 4 means. The fix: refuse any `credentials` in
+  `checkCreative`, with a role.test.mjs case. It goes after row 213
+  lands, as a follow-up row or in the next row that edits role.mjs.
+  Webby N1 on row 213 r3 (REVIEW-r3.md, 3ab3c010b), mos-1160.
+  (2026-10-21)
+- **The boot host check orders only one business's bus.**
+  `mosaic-hostcheck.service` (row 240) has
+  `[email protected]`. `case2-unit.sh` enables the
+  bus as `mosaic-bus@<business>.service`, so on a host whose business id
+  isn't `mosaic-stack` nothing orders the two. The bus can start before
+  the boot stop runs, and after a boot-time drift role sessions can use
+  bwrap until it does. The fix: `After=mosaic-hostcheck.service` in
+  `packages/cli/systemd/mosaic-bus.service.in`, which orders every
+  instance and does nothing where the unit isn't installed. It goes in
+  before the first install whose business id isn't `mosaic-stack`.
+  Filbert N1 on row 240 (29945, #1746). (2026-10-21)
+- **The run sheet writes the apt hook before the first `--check`.**
+  Section 4 installs `80mosaic-hostcheck`, then runs
+  `hostcheck.sh --check`. If that check fails, the next package run
+  closes bwrap before anyone has read the failure. It fails closed, but
+  it surprises an installer. The fix: run `--check` first, or say what a
+  failure at that step means. Doc-only, for the next row that edits
+  `docs/guides/host-run-sheet.md`. Filbert N2 on row 240 (29945, #1746).
+  Filbert's N3, that a closed bwrap appends to `DRIFT` on every later
+  apt run and boot, is by design; ops-01's STATE read should expect the
+  repeats. (2026-10-21)
+- **The sso-config first-step hint has no business.** When the target
+  copy has no `console.sso`, `stack-release.sh` (`:938`) refuses with
+  "activate $TO without --sso first, then ... activate $TO --sso". The
+  usage line is `activate ID BUSINESS` (`:47`), so pasting either command
+  as printed gives a usage error, not the first step. It fails safe,
+  since the usage error changes nothing. The fix: add `$BUSINESS`
+  (set at `:2138`) to both commands, and the business (`acme`)
+  to the three expected strings in `stack-release.test.mjs`
+  (`:1538`, `:1689`, `:1691`). For a later row that edits
+  `stack-release.sh`. Webby N1 on row 238 r1 (REVIEW-r1.md, 433a95292,
+  #1744). (2026-10-21)
+- **Lane image prep inspects a base that BuildKit never tagged.**
+  (N7 of the row 197 proof.) After the Compose build,
+  `scripts/testing/lane-image.mjs:41` (`prepareImage`) runs
+  `docker image inspect node:24-bookworm-slim` to put the base digest
+  in the receipt. BuildKit resolves the base from the registry
+  without tagging it in the local store, so on a host without the tag
+  the inspect throws "No such image" after a good build. That
+  happened in Sage's proof try 1 (2026-10-21 09:03Z, run cf48efccf083).
+  The throw fails closed: the run's terminal record is unclean, both
+  lanes quarantine, and `gate-lane.sh recover` clears them. Pulling the
+  base first fixes it, and the receipt digest then matches what the
+  build used (91acba91 both ways). The fix: before the build, inspect
+  the base and refuse with a named reason if it's missing, or pull it.
+  After the build, refuse if the base digest changed. Add a test with a
+  fake Docker that has no base tag. Kept out of row 197 r6 by Sage
+  (sage-1883). Mos asked for this record in mos-1162. (2026-10-21)
+- **Case 1 acceptance script: root parses with the node it's checking, and the header says less than root does.**
+  (Duckworth N1-N3 on the row 195 manifest, REVIEW-m1 6afcee2a5.)
+  N1: F9 runs `$ROOT$NODE` as root (`scripts/case1-accept.sh:298`)
+  before F10 checks that `--node` is the `/opt/mosaic-stack/node-<pin>`
+  path (:303-304). On a host installed as designed, `case2-unit.sh:128-133`
+  refused a non-root-owned `--node` and the args file is root's, so no
+  escalation path exists today. Run F9's parse through `AS_USER`, or
+  apply F10's path check first. N2: the header (:10) and the TOOLS.md
+  entry say root only reads, but root also runs `curl` (F2), `sudo -l`
+  (P1, P3), the jarvis probe (P9), `hostcheck.sh --check` and
+  `systemctl`. Doc-only. N3: F6's prefix match (:261) accepts a
+  `--claude` with `..` after `claude-<pin>/`. That claude runs only as
+  `mosaic`, and F10 uses equality. Darkwing has a follow-up on
+  `darkwing/row195-n1` 1e3c4767c, not yet run; it gets its own row now
+  that 195 has landed (b65014647), Duckworth reviews. (2026-10-21)
+- **Morgana's row 213 mutation set: the B3 pattern no longer matches `bundle.mjs`.**
+  (Webby N3 on row 221 round 1, REVIEW-r1 a0a00630e.) Row 221's
+  candidate changes `packages/harness/src/bundle.mjs`, and the B3
+  anchor at Morgana's 213 `mutants.py:48` stops matching on that
+  base. This matters only if someone reruns that set. Fix the anchor
+  in that tooling before any rerun, and check that a stale anchor
+  refuses instead of skipping the mutant (sage-1941). (2026-10-21)
+- **Grant executor test X5 starts a `sleep 30` that can outlive its test.**
+  (Webby N1 on row 248 r1, webby-0080; deferred by Duckworth in the row
+  249 review, REVIEW-r1 28174fe08, #1751 comment 30070.) The test at
+  `packages/bus/tests/grant-executor.test.mjs:989` (:934 before row
+  249) runs `sleep 30` on the sshd side, where an abort doesn't reach it. Fix it with a stub
+  that exits once its test dir is gone, as row 248 did for the hold
+  stubs, or with a shorter sleep. This binds the next row that touches
+  that test file. Until then, a lane cleanup that runs after this file
+  waits 30 s before it calls a lone `sleep 30` a leak. The row 197
+  lanes scan only at lane end, about 15 minutes after pkg-bus, so they
+  can't see it (mos-1169). (2026-10-21)
+
+- **Row 66 live checks: the unslop notice on a live managed session, both harnesses.**
+  (mos-1186, Vikunja #454.) Row 66's gate asked for one landing session per
+  harness with a prompt that draws a known tell. Mos changed that gate. The
+  Claude Code session ran before landing on a scratch root from the
+  candidate tree (run r4ab24630d323, landed 2c38325ec). Pi ran launch only there (run r1dd94171bede):
+  this host has no credential pi reads until P19 #383 settles. Two live
+  checks remain. Claude Code: in the first re-pin whose tree includes row 66,
+  backup first (Q173). Pi: one full session with a tell after #383. Each
+  attaches the operator note on the RESULT, the next-turn correction and the
+  `unslop.jsonl` counts. (2026-10-21)
+
+- **Console tester listener: `testerNoSignIn` is a dead parameter.**
+  (Duckworth N2 on the row 196 manifest, REVIEW-m1; carried as C1 in
+  REVIEW-m2 cdbf7b64e, #1694 comment 30156.) Row 196 landed 7247d80c7
+  with the parameter and its comment still at `serve.mjs:472-475` and
+  passed from `webui/src/cli.mjs:109` and `sso.test.mjs:392`. Nothing
+  in `serve.mjs` reads it after the destructure. Remove it, or wire it
+  with a test. This binds the next row that touches
+  `packages/webui/src/serve.mjs`. (2026-10-21)
+- **Console library routes: the tester listener and `library.sync`.**
+  (Duckworth N5 on row 196 round 2, REVIEW-m2 cdbf7b64e.) At 7247d80c7
+  `startServer` (`serve.mjs:475`) takes none of `libraryFile`,
+  `libraryStatus` or `librarySync`, so the callbacks `cli.mjs` passes
+  do nothing yet. The row that adds the Console library routes decides
+  whether the tester listener gets `library.sync`. Duckworth's view is
+  that it shouldn't, because sync is a human write. (2026-10-21)
+- **Console library routes: four library codes still map to 502.**
+  (Dewey N2 on the row 254 manifest, #1759 comment 30173.) Row 254
+  gave six library codes a STATUS entry in `packages/webui/src/bus.mjs`.
+  `library-mapping-invalid`, `library-remote-invalid`,
+  `library-state-invalid` and `library-git` still fall through
+  `busStatus` to 502. The row that adds the Console library routes
+  decides their statuses and gives its `humanCall` for `library.sync`
+  a timeout over 130 seconds. (2026-10-21)
+- **T27 sweep test leaves two `sleep 60` children running.**
+  (Darkwing row 251 slot, darkwing-0113 and darkwing-0117; Dewey on
+  r2, comment 30168.) The sweep test spawns two detached shells,
+  `planted` at `host-run.test.mjs:528` and `decoy` at `:536`, each
+  running `sleep 60; :` with the run dir as `$0`. `sweepRunDir` kills
+  the planted shell by pid (`host-run.mjs:238`), and `t.after` kills
+  only the decoy shell. Neither kill reaches the `sleep` child, so each
+  one lives for up to 60 s after the test and trips any busy check that
+  follows. The fix is to kill the process group in both `t.after`
+  hooks: `process.kill(-pid, 'SIGKILL')`. Each shell is spawned
+  detached, so it leads its own group. `exec sleep 60` doesn't work.
+  The sweep matches the run dir in `/proc/<pid>/cmdline`
+  (`host-run.mjs:236`), and exec drops the `$0` that carries it, so the
+  planted process would survive and the "planted process killed" assert
+  would fail. This binds the next row that touches
+  `packages/bus/tests/host-run.test.mjs`. (2026-10-21)
+- **Real-model suite cases run outside the gate.** Row 244 moved
+  `test-task.sh` fork recall (M11) and user recall (M16) behind
+  `MOSAIC_LIVE_PROVIDER=1`, and `test-release.sh` activations to the mock
+  adapter. Before any re-pin whose tree changes `packages/harness` or the
+  session fork code (`scripts/mosaic-task.mjs` session and
+  `sessionForkFrom` handling, the pi adapter), an operator runs
+  `MOSAIC_LIVE_PROVIDER=1 bash scripts/test-task.sh` with the real pi
+  credential and a real `release.sh activate`, and records both results on
+  the re-pin row. Morgana's wording (row 244 BUILD.md), Webby N2 on row 244
+  r1 (#1757). (2026-10-21)
+
+## Queue
+
+Moved to `docs/plans/QUEUE.md` on 2026-09-13. This file holds only gaps.
+
+## Done
+
+- Ledger (piece 3, #1506): shipped cd0aa5fb, Gate D written 2026-09-12 (18.9 human messages per closed issue).
+- Relaunched seat shows the old last message (darkwing, Step 3 log, 2026-09-12): closed by #1512 relaunch activity, af4203ca. Filbert authored it; Darkwing and Dewey reviewed. The live board restart and Gate F remain separate.
+- Sage launcher hook uncommitted (2026-09-12): closed by the agents/sage launch files commit, Dewey review R1 revise, R2 approve (`agents/dewey/work/sage-launch-review-2026-09-26.md`), launcher test now covers sage.
+- Ledger counts T3 agent messages as human (2026-09-26, #1506): fixed in ef0020ad (Darkwing 6a, Filbert reviewed). `messageKind` now counts a T3 header as agent and the control-board sender as board. It changes no current count, because no source the ledger reads has a T3 header yet. That waits for the T3 thread source (Gate F).
+- Control board checked the bind address but not Host or Origin (2026-09-26, #1507, found by Dewey): closed by the board guard commit. `foreignRequest` refuses a non-loopback Host, a wrong port, userinfo or a path in Host, and any foreign Origin on every route. Dewey authored it, and Rocko approved it (`agents/rocko/work/board-guard-review-2026-09-26.md`, 5a12f08e). Rocko's one low finding: URL normalization accepts a root slash, empty userinfo and an empty query in Host, so the notes' wording overstates what the raw-syntax check refuses. No bypass was found.
+- Discord engine: leaked fake pi and the timeout gap in `busy` (2026-09-26, #1509): fixed in 3edb15eb (Darkwing 6b R2, Rocko approved, review ed5510a0). Tests stop the engine in `finally`. A turn pi never started now stops pi with exit 1 instead of guessing, and the unit restarts it. Known limit: see the open entry on wedge restarts.
+- Combined concurrent test hangs (2026-09-14, #1509): closed on evidence from 3edb15eb. At default concurrency the union passed 406/406 three times on the R2 snapshot and 408/408 on the commit's index, where clean HEAD had hung four runs out of four. The inherited-intermittency entry from 2026-09-15 stays open until a later run shows it is the same cause.
+- A nested `node --test` passes even when its tests fail (2026-09-26, #1508): closed. Queue A1 (34a72af9) clears NODE_TEST_CONTEXT on its own path. N13 fixes `test-foundation.sh` and `test-discord.sh`, each with a check that fails the suite if the clearing is lost. Darkwing wrote it (n13.patch 00868b2f) and Filbert approved it (e464be6c). Sage's grep on 2026-09-27 finds no other nested `node --test`: in scripts, only the two suites, `test-queue.sh` and `queue-commit.sh`, and in JS, only the queue test that covers the fix.
+- SetSpark service accepted any string as a decision approver (2026-09-26, #1509): closed. Fixed in shared-signals cc74d92 (Rocko approved R2, lead decision 24). The operations seat (T3 12fe8cda) deployed it to VM 1022 at 00:23Z on 2026-09-27. The running `service.py` hash matches cc74d92, and `/healthz` returns 200 inside the network and through the public tunnel. The read-only README survey found one row breaking the rule (DEC-009, Proposed, version 1), one open request that isn't ready (DEC-009's), and no Accepted decision with more than 16 approvers. No rows changed. DEC-009 stays as stored (lead decisions 21 and 28). The service now refuses approvals on it, so nothing can go wrong silently. Side effect: `up -d` also recreated caddy, about 20 s of edge downtime for all hosts. That is for the shared-signals deploy procedure to fix, not Mosaic.
+- Queue suite failed its live checks outside the canonical checkout
+  (2026-09-27, #1508): closed by Piece D, f539466f. `test-queue.sh` now
+  skips `verify` and `render --check` with a printed reason when the
+  toplevel isn't the recorded `canonicalRoot`. An index export passed
+  27/0, and the canonical checkout 29/0.
+- Queue: an owner listed as a reviewer blocked the row (2026-09-27,
+  #1508): closed by row 31, bb2fa970. `add`, `set reviewers` and `assign`
+  now refuse the owner as a reviewer with exit 2 and write nothing. Rocko
+  built it in the Gate G run, and Filbert approved round 1 (#1508 comment
+  26629, 8 of 8 mutants caught).
+- Queue follow-ups from rows 12, 13 and 31 (2026-10-04, #1508): closed by
+  row 33, 6fb50cc0. Filbert built it, and Darkwing approved round 1
+  (#1508 comment 26651).
+  - `genesis` refuses a map row whose owner is one of its reviewers (exit
+    2, nothing written). The check is on the map, not in replay, so a log
+    from before the rule still loads.
+  - The `assign` refusal now reads "can't assign row N to SEAT: SEAT is
+    one of its reviewers".
+  - `queue-commit.sh` compares HEAD with H before each canary and again if
+    the clean run fails. A moved HEAD exits 2 with "HEAD moved since H was
+    recorded"; the guard message is kept for a real guard failure.
+  - Every time and date the validator accepts must format back to itself,
+    so month 13, day 32, 2026-02-30, 2027-02-29 and 24:00 are refused.
+    The live log at rev 45 still replays.
+  - The cold-start failure (2026-09-27): not reproduced in 20 cold runs.
+    Each ran `node --test packages/queue/tests/` in a fresh tree, 10
+    shared clones and 10 exports, one after another. All 20 passed
+    148/148 (2960 of 2960). The 300 ms deadline test is unchanged. Counts:
+    `agents/filbert/work/queue-33/cold-runs.txt`.
+- CHAT-03 I1 round 2 follow-ups (2026-10-04, #1507): four of five closed
+  by slice 1 S5 (row 40, #1522; Dewey authored, Darkwing and Filbert
+  reviewing). The commit is named in the row's review record when it
+  lands.
+  - Engine command and `preArgs`: `engine` takes only `extraArgs`, `cwd`
+    and `envKeys`. The controller always launches the pinned Pi and
+    checks that at construction and at bind. The fake engine comes in
+    through a symbol key that JSON config can't carry (N24b).
+  - Engine environment: an explicit list (`ENGINE_ENV` in `pi-pin.mjs`)
+    plus `*_API_KEY` and `*_TOKEN` names from `engine.envKeys`. Nothing
+    else is inherited. `HOME` passes, so Pi reads `~/.pi/agent` unless
+    `PI_CODING_AGENT_DIR` is set (Darkwing F3).
+  - `escalating` is cleared when the force-stop fence throws (Darkwing F2,
+    races.test.mjs).
+  - Takeover then Enter in one chunk: input after Ctrl-T or Ctrl-O waits
+    for that action, in the same chunk or a later one, and also while an
+    earlier action is still pending, so it is judged as if typed one key
+    at a time (Filbert F2; Darkwing and Filbert T1 on #1522;
+    flows.test.mjs).
+  The frozen-cgroup test (Filbert F1) stays open above.
+- Gate runs mount the host's pi auth file (Webby N4 on the row 197 proof
+  driver, 059577886): closed by row 244 (#1757), landing e69260a3c. The
+  suites and the lane's `cleanEnv` export a 0600 fixture `PI_AUTH_FILE`,
+  `guardDocker` refuses a Compose run without one, and
+  `packages/cli/tests/gate-lane-auth.test.mjs` proves no gate step mounts
+  the host default. The real-model cases this moved off the gate are open
+  above.
+
+## Row253 F5: legacy Case AS_USER supervision
+
+Tracked as row 276, Gitea #1781 (sage-2331), owner Gander, reviewer Duckworth, after row253.
+Brief: docs/plans/2026-10-22_case-sudo-legacy-followup.md, “Brief: supervised legacy AS_USER calls”.
+
+case1-accept.sh's legacy timeout330 around AS_USER talk and its AS_USER precheck, Claude version, PM launches and Node version diagnostics predate the new socket metadata/probe helpers. sudo's pty monitor can move them to a separate session; the old outer timeout does not prove their descendants are killed. The C4 repair in row253 covers only its new config query and peer probe. These legacy paths need the reviewed supervisor or a header explicitly explaining why each remains unsupervised. The follow-up must preserve the 300-second talk/reply contract, concurrent F5 scan, diagnostics and secret-output refusals, with fake-only session-hop tests and Sage's slot. No host or live unit change is authorized.
+
+Row 276 / #1781 also owns the case1 root-side capture/tools mutant counterparts (duckworth-0112 N1) and documenting the setuid-member cleanup refusal in the headers (N2). A member that changes uid and cannot be killed causes inner-cleanup refusal, never successful observation. N4 is addressed in row253 by allowing SID confirmation until the existing inner watchdog expires, instead of a separate 200 ms scheduling margin.
@@ -0,0 +1,76 @@
+--- a/scripts/case2-unit.sh
+++ b/scripts/case2-unit.sh
+@@ -163,5 +163,3 @@
+-    local pid="$1" raw rest
+-    if ! raw="$(<"/proc/$pid/stat")" 2>/dev/null; then
+-        [ -e "/proc/$pid/stat" ] && return 1
+-        return 3
+-    fi
+    local pid="$1" raw="" rest
+    # EOF is expected: stat has no NUL. Decide on content, not read's status.
+    IFS= read -r -d '' raw < "/proc/$pid/stat" 2>/dev/null || :
+@@ -181,3 +179 @@
+-    local entry pid rc live until
+-    clock_cs || return 1
+-    until=$((CLOCK_CS + 25))
+    local entry pid rc live until=""
+@@ -200,0 +197,2 @@
+        # Inventory pass 1 is outside the bounded confirmation/retry budget.
+        [ -n "$until" ] || until=$((CLOCK_CS + 25))
+@@ -221 +219,2 @@
+-for ((attempt=0; attempt<100; attempt++)); do
+# Allow session creation the whole inner budget, rather than a 200 ms margin.
+while :; do
+--- a/scripts/case1-accept.sh
+++ b/scripts/case1-accept.sh
+@@ -121,5 +121,3 @@
+-    local pid="$1" raw rest
+-    if ! raw="$(<"/proc/$pid/stat")" 2>/dev/null; then
+-        [ -e "/proc/$pid/stat" ] && return 1
+-        return 3
+-    fi
+    local pid="$1" raw="" rest
+    # EOF is expected: stat has no NUL. Decide on content, not read's status.
+    IFS= read -r -d '' raw < "/proc/$pid/stat" 2>/dev/null || :
+@@ -139,3 +137 @@
+-    local entry pid rc live until
+-    clock_cs || return 1
+-    until=$((CLOCK_CS + 25))
+    local entry pid rc live until=""
+@@ -158,0 +155,2 @@
+        # Inventory pass 1 is outside the bounded confirmation/retry budget.
+        [ -n "$until" ] || until=$((CLOCK_CS + 25))
+@@ -179 +177,2 @@
+-for ((attempt=0; attempt<100; attempt++)); do
+# Allow session creation the whole inner budget, rather than a 200 ms margin.
+while :; do
+--- a/packages/cli/tests/case2-unit.test.mjs
+++ b/packages/cli/tests/case2-unit.test.mjs
+@@ -236,0 +237,22 @@
+});
+
+test('row253 C4 cleanup budget starts after inventory pass one',()=>{
+ // A deterministic clock models a slow inventory without host-load timing.
+ // All process reads and signals are stand-ins; no real PID is signalled.
+ const source=read(UNIT);
+ const body=source.slice(source.indexOf('stat_fields() {'),source.indexOf('finish() {'));
+ const standins=`
+child=424242; sleep_bin=:; seen=0; clocks=0; kills=0
+stat_fields() {
+ seen=$((seen+1)); ST_STATE=R; ST_SESSION=0
+ [ "$seen" != 1 ] || ST_SESSION="$child"
+ return 0
+}
+clock_cs() { clocks=$((clocks+1)); CLOCK_CS=$((clocks*1000)); }
+kill() { kills=$((kills+1)); return 0; }
+clean_session; rc=$?
+printf '%s' "$kills"
+exit "$rc"
+`;
+ const r=spawnSync('/bin/bash',['-c',body+standins],{encoding:'utf8'});
+ assert.equal(r.status,0,r.stderr);assert.equal(r.stdout,'1');
+--- a/docs/plans/DEFERRED.md
+++ b/docs/plans/DEFERRED.md
+@@ -461,0 +462,2 @@
+
+Row 276 / #1781 also owns the case1 root-side capture/tools mutant counterparts (duckworth-0112 N1) and documenting the setuid-member cleanup refusal in the headers (N2). A member that changes uid and cannot be killed causes inner-cleanup refusal, never successful observation. N4 is addressed in row253 by allowing SID confirmation until the existing inner watchdog expires, instead of a separate 200 ms scheduling margin.
@@ -0,0 +1,9 @@
+{
+  "scripts/case2-unit.sh": "d7670bdb049ae41ba3774fc83de633636859b6723be858cfb31ea106b0e8812b",
+  "scripts/case1-accept.sh": "c02bef6b3495e5a4548d7b4e89675ed52be26a0c9ccce4d9d5cfc5fe2ce437bd",
+  "packages/cli/tests/case-sudo-fixture.mjs": "b259b8c7926e49829c8a956674021cb0cc85ddd65aebdc786d05cc08d7790008",
+  "packages/cli/tests/case2-unit.test.mjs": "1e0696eb196e83a0766b433ef71f27df0a3f8fcb6399787ab8c1c0f05c54dc44",
+  "packages/cli/tests/case1-accept.test.mjs": "6cfd2963303315aa6911c4d4f6d75d3ab87d9fcba8e128b056216e7f85fd8901",
+  "packages/webui/README.md": "2eeb1f79324f64463a9b3427e67492d672b8d1c14db6c0349c7de17d89e52fc9",
+  "docs/plans/DEFERRED.md": "3ea465cf7ed664ceb1ea4076b829f706f8480f80c4a8aaa6a7487e4eceaf318f"
+}
@@ -0,0 +1,282 @@
+[
+  {
+    "id": "M1",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "d7670bdb049ae41ba3774fc83de633636859b6723be858cfb31ea106b0e8812b",
+    "after": "4de5294507816ddc4114c418a6bb7c197b3fefe92f19b3b18cb95384e23de594"
+  },
+  {
+    "id": "M2",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "d7670bdb049ae41ba3774fc83de633636859b6723be858cfb31ea106b0e8812b",
+    "after": "caf88ee7ad50b89169a0f57e12b696fe3828238af2ef1008ba6b6016ea7b2528"
+  },
+  {
+    "id": "M3",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "d7670bdb049ae41ba3774fc83de633636859b6723be858cfb31ea106b0e8812b",
+    "after": "4401886e41fdb4c27610198b66f12d0b3103c5422e0862e9cea30a6f67c93fde"
+  },
+  {
+    "id": "M4",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "d7670bdb049ae41ba3774fc83de633636859b6723be858cfb31ea106b0e8812b",
+    "after": "ef9a92bb24c72832bdba4d782bf4662394ee05e06a12b750a23d488d9181cd1d"
+  },
+  {
+    "id": "M5",
+    "file": "scripts/case2-unit.sh",
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+  },
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+  },
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+  },
+  {
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+  {
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+  {
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+  },
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+    "after": "736418014b96a09ebe82d996ff6f45b9eb1f3c1e0ada274c505f89fbbd732783"
+  },
+  {
+    "id": "M39",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "d7670bdb049ae41ba3774fc83de633636859b6723be858cfb31ea106b0e8812b",
+    "after": "1486b8907be4f327bc17b64ddf615cd8b3db1193c185f7934bcba1c7ccc5ec31"
+  },
+  {
+    "id": "M40",
+    "file": "scripts/case2-unit.sh",
+    "occurrences": 1,
+    "before": "d7670bdb049ae41ba3774fc83de633636859b6723be858cfb31ea106b0e8812b",
+    "after": "2f654a76d887ca62525e01c307a2a8f828ee426087dc63a2d4df6a07dc525d53"
+  }
+]
@@ -0,0 +1,142 @@
+// Shared fake process model for the two Case host-script tests. No real sudo.
+// Call case_sudo_run RECORD_DIR COMMAND... after the caller's argv checks.
+// Missing session-mode preserves the original exec-style fake.
+import { spawn } from 'node:child_process';
+import { readFileSync, readdirSync } from 'node:fs';
+
+export const CASE_SUDO_SESSION = String.raw`
+case_sudo_entry() {
+    local record="$1" here sid; shift
+    here="$BASHPID"
+    read -r sid < <(/bin/ps -o sid= -p "$here")
+    printf "%s %s\n" "$here" "$sid" >> "$record/session-pids"
+    if { [ -f "$record/stall-config" ] && [[ "$*" == *MOSAIC_TESTER_SOCKET_V1* ]]; } ||
+       { [ -f "$record/stall-probe" ] && [[ "$*" == *SO_PEERCRED* ]]; }; then
+        trap '' TERM HUP
+        [ ! -f "$record/stall-output" ] || /bin/cat "$record/stall-output"
+        exec /bin/sleep 60
+    fi
+    exec "$@"
+}
+case_sudo_run() {
+    local record="$1" child="" rc=0 mode=exec; shift
+    [ ! -f "$record/session-mode" ] || mode="$(<"$record/session-mode")"
+    if [ "$mode" != hop ]; then case_sudo_entry "$record" "$@"; return "$?"; fi
+    # The fake stays as parent, just as sudo does on its pty path. KILL cannot
+    # be caught or forwarded. The child creates the separate terminal session.
+    trap '[ -z "$child" ] || kill -TERM -- "-$child" 2>/dev/null || :' TERM
+    trap '[ -z "$child" ] || kill -HUP -- "-$child" 2>/dev/null || :' HUP
+    trap '[ -z "$child" ] || kill -INT -- "-$child" 2>/dev/null || :' INT
+    export -f case_sudo_entry
+    /usr/bin/setsid /bin/bash -c 'case_sudo_entry "$@"' -- "$record" "$@" &
+    child=$!
+    # An interrupted wait returns while the child still runs; keep waiting.
+    while :; do
+        wait "$child"; rc=$?
+        kill -0 "$child" 2>/dev/null || break
+    done
+    return "$rc"
+}
+`;
+
+export function liveRecordedSessions(recordFile, readFile, procDirs) {
+  // Exec fake entries share the test runner's session. Only self-led sessions
+  // are isolated and safe to scan here; exec coverage also checks exact PIDs.
+  const sessions = new Set(readFile(recordFile).trim().split('\n').filter(Boolean).map(line=>line.trim().split(/\s+/).map(Number)).filter(([pid,sid])=>pid===sid).map(([,sid])=>sid));
+  const live=[];
+  for(const entry of procDirs()){
+    if(!/^\d+$/.test(entry))continue;
+    try{
+      const stat=readFile(`/proc/${entry}/stat`), fields=stat.slice(stat.lastIndexOf(') ')+2).split(' ');
+      if(sessions.has(Number(fields[3])) && fields[0]!=='Z') live.push(Number(entry));
+    }catch{}
+  }
+  return live;
+}
+
+export function recordedPids(file) {
+  try{return readFileSync(file,'utf8').trim().split('\n').filter(Boolean).map(line=>line.trim().split(/\s+/).map(Number));}
+  catch(error){if(error.code==='ENOENT')return [];throw error;}
+}
+
+export function recordedLivePids(file) {
+  return sessionPairs(recordedPids(file)).filter(([pid,sid])=>{
+    try{
+      const raw=readFileSync(`/proc/${pid}/stat`,'utf8'),fields=raw.slice(raw.lastIndexOf(') ')+2).split(' ');
+      return Number(fields[3])===sid && fields[0]!=='Z' && fields[0]!=='X';
+    }catch(error){if(error.code==='ENOENT'||error.code==='ESRCH')return false;throw error;}
+  }).map(([pid])=>pid);
+}
+
+export function killRecordedPids(file) {
+  killPairs(recordedPids(file));
+}
+
+function killPairs(pairs) {
+  for(const [pid,sid] of sessionPairs(pairs)){
+    try{
+      const raw=readFileSync(`/proc/${pid}/stat`,'utf8'),fields=raw.slice(raw.lastIndexOf(') ')+2).split(' ');
+      if(Number(fields[3])===sid && fields[0]!=='Z' && fields[0]!=='X')process.kill(pid,'SIGKILL');
+    }catch(error){if(error.code!=='ENOENT'&&error.code!=='ESRCH')throw error;}
+  }
+}
+
+function sessionPairs(pairs) {
+  // Only self-led records authorize a session scan. Exec-mode records belong
+  // to the runner's session and authorize checking their exact PIDs only.
+  const sessions=new Set(pairs.filter(([pid,sid])=>pid===sid).map(([,sid])=>sid));
+  const found=new Map(pairs.map(pair=>[pair[0],pair]));
+  if(sessions.size)for(const entry of readdirSync('/proc')){
+    if(!/^\d+$/.test(entry))continue;
+    try{
+      const raw=readFileSync(`/proc/${entry}/stat`,'utf8'),fields=raw.slice(raw.lastIndexOf(') ')+2).split(' '),sid=Number(fields[3]);
+      if(sessions.has(sid))found.set(Number(entry),[Number(entry),sid]);
+    }catch(error){if(error.code!=='ENOENT'&&error.code!=='ESRCH')throw error;}
+  }
+  return [...found.values()];
+}
+
+// Safety net for a removed-outer-bound change. It is fixture cleanup, never
+// product supervision. The guard reads only fixture records and checks sid
+// immediately before every kill. Normal outer-bound cases return before it.
+export function fixtureGuard(t,files,milliseconds=9500) {
+  const program=`const fs=require('node:fs');setTimeout(()=>{for(const file of JSON.parse(process.argv[1])){let rows=[];try{rows=fs.readFileSync(file,'utf8').trim().split(String.fromCharCode(10))}catch{}for(const row of rows){const [pid,sid]=row.trim().split(' ').map(Number);if(!(pid>0&&sid>0))continue;try{const raw=fs.readFileSync('/proc/'+pid+'/stat','utf8'),f=raw.slice(raw.lastIndexOf(') ')+2).split(' ');if(Number(f[3])===sid&&f[0]!=='Z')process.kill(pid,'SIGKILL')}catch{}}}},Number(process.argv[2]));`;
+  const child=spawn(process.execPath,['-e',program,JSON.stringify(files),String(milliseconds)],{stdio:'ignore'});
+  const stop=async()=>{
+    if(child.exitCode!==null||child.signalCode!==null)return;
+    const exited=new Promise(resolve=>child.once('exit',resolve));
+    child.kill('SIGKILL');await exited;
+  };
+  t.after(stop);return stop;
+}
+
+export function cleanupFixture(t,files) {
+  let captured=[];
+  const capture=()=>{captured=files.flatMap(recordedPids);};
+  // tmp(t)'s directory-removal hook may run first. Retain PID/SID pairs in
+  // memory before assertions, then verify the kernel sid again before killing.
+  t.after(()=>killPairs([...captured,...files.flatMap(recordedPids)]));
+  return capture;
+}
+
+export async function pollFixtureGone(files) {
+  for(let n=0;n<50;n++){
+    if(files.every(file=>recordedLivePids(file).length===0))return [];
+    await new Promise(resolve=>setTimeout(resolve,10));
+  }
+  return files.flatMap(recordedLivePids);
+}
+
+export function blockingQuerySource(records,kind='signals',member,proof) {
+  const py=`import os,sys\nos.setpgid(0,0)\nwith open(sys.argv[2],"a") as f:f.write(str(os.getpid())+" "+str(os.getsid(0))+chr(10))\nos.execv(sys.argv[1],[sys.argv[1],"60"])`;
+  return `import fs from 'node:fs';import {spawn} from 'node:child_process';
+const records=${JSON.stringify(records)};
+function record(pid){const s=fs.readFileSync('/proc/'+pid+'/stat','utf8');const sid=Number(s.slice(s.lastIndexOf(') ')+2).split(' ')[3]);fs.appendFileSync(records,pid+' '+sid+String.fromCharCode(10));}
+record(process.pid);
+export function loadSystem(){
+${kind==='sleep'?`const c=spawn('/usr/bin/sleep',['60'],{stdio:'inherit'});record(c.pid);`:''}
+${kind==='signals'?`process.on('SIGTERM',()=>{});process.on('SIGHUP',()=>{});`:''}
+${kind==='member'?`const c=spawn('/usr/bin/python3',['-I','-S','-c',${JSON.stringify(py)},${JSON.stringify(member)},records],{stdio:'inherit'});for(let n=0;n<200;n++){try{const s=fs.readFileSync('/proc/'+c.pid+'/stat','utf8');if(s.includes('('+${JSON.stringify(member?.split('/').at(-1))}+') ')){fs.writeFileSync(${JSON.stringify(proof)},s);break;}}catch{}Atomics.wait(new Int32Array(new SharedArrayBuffer(4)),0,0,5);}`:''}
+Atomics.wait(new Int32Array(new SharedArrayBuffer(4)),0,0);
+}`;
+}
@@ -0,0 +1,706 @@
+#!/usr/bin/env bash
+# Row 195 (#1693): the Case 1 acceptance on 10.1.1.53, design r7 section 5
+# (agents/darkwing/work/queue-195/DESIGN.md). Deviations and decisions: agents/darkwing/work/queue-195/BUILD.md.
+#
+#   case1-accept.sh --business ID --args FILE --claude-pin PIN --node-pin vN.N.N
+#
+# Root runs it on the Case 1 host after the install window, from a root-owned checkout. It reads the
+# user, home, copy, node, claude, main port and tester socket marker from the args file, which must pass stack-upgrade.sh's
+# rules and be a factory file for --business. Every command that runs the stack's code runs as
+# `sudo -u USER -H env PATH=<node dir>:/usr/local/bin:/usr/bin:/bin` from /. Root itself reads ss,
+# /proc, the account database and file metadata, and runs these: systemctl show and is-enabled (F1,
+# P11), curl on the Console's loopback healthz (F2), sudo -l (P1, P3), sudo -u jarvis bwrap --version
+# and hostcheck.sh --check (P9), and node to parse managed-settings.json (F9). F9 runs node only when
+# --node is the pinned path and it and every directory above it are root's with no group or other
+# write. The script changes nothing on the host but the message F3 sends and its reply, and it never
+# opens claude-session.env. A bounded config/target query imports the copy only as the stack
+# user, with sudo and an empty environment. Root parses its two facts in bash. P10 uses the
+# fixed system Python, also as the stack user, for a read-only SO_PEERCRED observation.
+# The config/probe supervisor is fixed root-validated system Bash plus setsid
+# and sleep, after the uid drop: query inner/outer 5/7 s, probe 2/4 s. Root
+# independently bounds its sudo wait. Legacy AS_USER talk and diagnostics below
+# retain their old behavior and are NOT covered by this supervisor (F5 follow-up).
+#
+# One line per check, `<id> <path> <mark> <evidence>`, then `count <mark> N` for each mark and a
+# result line. F checks are `pass` or `FAIL`. P checks are `closed`, `accepted <ruling>` or
+# `unnamed`, which means no Q182, Q183 or Mos ruling names the path; each unnamed line goes to Mos.
+#
+# Exit 0 when every F check passes, 1 when one fails, 2 on usage or a refusal (a bad args file, or
+# --root misused). A P check never changes the exit.
+#
+# Test seam, for packages/cli/tests/case1-accept.test.mjs only. Root takes none:
+#   --root DIR   prefixes the args file, /etc, /proc, the stack's home, the host check and node, and
+#                reads the account database from DIR/etc/passwd and DIR/etc/group instead of getent
+set -uo pipefail
+
+usage() { echo "usage: case1-accept.sh --business ID --args FILE --claude-pin PIN --node-pin vN.N.N" >&2; exit 2; }
+refuse() { echo "case1-accept: refusing: $*" >&2; exit 2; }
+BUSINESS="" ARGS_FILE="" CLAUDE_PIN="" NODE_PIN="" ROOT=""
+while [ $# -gt 0 ]; do
+    case "$1" in
+        --business) [ $# -ge 2 ] && [[ "$2" =~ ^[a-z0-9][a-z0-9-]*$ ]] || usage; BUSINESS="$2"; shift 2 ;;
+        --args) [ $# -ge 2 ] && [[ "$2" =~ ^/[A-Za-z0-9/._+-]+$ ]] || usage; ARGS_FILE="$2"; shift 2 ;;
+        --claude-pin) [ $# -ge 2 ] && [[ "$2" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]] || usage; CLAUDE_PIN="$2"; shift 2 ;;
+        --node-pin) [ $# -ge 2 ] && [[ "$2" =~ ^v[0-9]+\.[0-9]+\.[0-9]+$ ]] || usage; NODE_PIN="$2"; shift 2 ;;
+        --root) [ $# -ge 2 ] && [[ "$2" =~ ^/[A-Za-z0-9/._+-]+$ ]] && [ -d "$2" ] || usage; ROOT="${2%/}"; shift 2 ;;
+        *) usage ;;
+    esac
+done
+[ -n "$BUSINESS" ] && [ -n "$ARGS_FILE" ] && [ -n "$CLAUDE_PIN" ] && [ -n "$NODE_PIN" ] || usage
+if [ "$(id -u)" = 0 ]; then
+    [ -z "$ROOT" ] || refuse "--root is a test seam, and root takes none"
+    PATH=/usr/sbin:/usr/bin:/sbin:/bin
+else
+    [ -n "$ROOT" ] || refuse "run it as root"
+fi
+cd / || refuse "cannot cd to /"
+
+# --- The args file, by stack-upgrade.sh's read_args rules, plus the serve ports ---
+
+f="$ROOT$ARGS_FILE"
+[ -f "$f" ] && [ ! -L "$f" ] || refuse "no regular file $ARGS_FILE"
+st="$(stat -c '%u %a' -- "$f")" || refuse "cannot stat $ARGS_FILE"
+[ "${st% *}" = "$(id -u)" ] && (( (8#${st#* } & 8#022) == 0 )) ||
+    refuse "$ARGS_FILE must be $(id -un)'s with no group or other write (it is uid ${st% *}, mode ${st#* })"
+mapfile -t ARGS < "$f" || refuse "cannot read $ARGS_FILE"
+S_USER="" S_HOME="" A_BUSINESS="" NODE="" COPY_ID="" CLAUDE="" PROFILE="" PORT="" TESTER_SOCKET=0
+copies=0 past=""
+for ((i = 0; i < ${#ARGS[@]}; i++)); do
+    a="${ARGS[i]}" v="${ARGS[i + 1]:-}"
+    if [ -n "$past" ]; then
+        case "$a" in
+            --port) PORT="$v"; i=$((i + 1)) ;;
+            --business) [ "$v" = "$BUSINESS" ] || refuse "serve business differs"; i=$((i + 1)) ;;
+            --tester-socket) TESTER_SOCKET=$((TESTER_SOCKET + 1)) ;;
+            --tester-port) refuse "case1-accept.sh retires tester TCP; use --tester-socket" ;;
+            *) refuse "unknown serve flag $a" ;;
+        esac
+        continue
+    fi
+    case "$a" in
+        --) past=1 ;;
+        --pm) ;;
+        --user) S_USER="$v"; i=$((i + 1)) ;;
+        --home) S_HOME="$v"; i=$((i + 1)) ;;
+        --business) A_BUSINESS="$v"; i=$((i + 1)) ;;
+        --node) NODE="$v"; i=$((i + 1)) ;;
+        --claude) CLAUDE="$v"; i=$((i + 1)) ;;
+        --profile) PROFILE="$v"; i=$((i + 1)) ;;
+        --copy) COPY_ID="$v"; copies=$((copies + 1)); i=$((i + 1)) ;;
+        *) refuse "$ARGS_FILE has $a before --, which case2-unit.sh does not take" ;;
+    esac
+done
+[ "$copies" = 1 ] || refuse "$ARGS_FILE needs exactly one --copy before --, not $copies"
+[[ "$S_USER" =~ ^[a-z_][a-z0-9_-]*$ ]] && [[ "$S_HOME" =~ ^/[A-Za-z0-9/._+-]+$ ]] && [[ "$A_BUSINESS" =~ ^[a-z0-9][a-z0-9-]*$ ]] &&
+    [[ "$NODE" =~ ^/[A-Za-z0-9/._+-]+$ ]] && [[ "$COPY_ID" =~ ^[0-9a-f]{40}$ ]] && [[ "$CLAUDE" =~ ^/[A-Za-z0-9/._+@-]+$ ]] ||
+    refuse "$ARGS_FILE lacks a plain --user, --home, --business, --node, --claude or --copy"
+[ "$PROFILE" = factory ] || refuse "$ARGS_FILE has --profile '${PROFILE}', not factory"
+[ "$A_BUSINESS" = "$BUSINESS" ] || refuse "$ARGS_FILE is for business $A_BUSINESS, not $BUSINESS"
+[[ "$PORT" =~ ^[1-9][0-9]{0,3}$ ]] && [ "$PORT" -le 1023 ] || refuse "$ARGS_FILE lacks a privileged numeric --port after --"
+[ "$TESTER_SOCKET" = 1 ] || refuse "$ARGS_FILE needs one bare --tester-socket after --"
+
+COPY="$S_HOME/.local/share/mosaic-stack/copies/$COPY_ID"
+DATA_ROOT="$S_HOME/.mosaic-dev"
+CRED="$S_HOME/.config/mosaic-dev/secrets/claude-session.env"
+BUSINESS_FILE="$S_HOME/.config/mosaic-dev/businesses/$BUSINESS.json"
+BUS_UNIT="mosaic-bus@$BUSINESS.service" CON_UNIT=mosaic-webui.service
+HOSTCHECK=/usr/local/lib/mosaic-stack/hostcheck.sh
+SETTINGS=/etc/claude-code/managed-settings.json
+LABEL_OUTER='bwrap (enforce)' LABEL_CHILD='bwrap//&unpriv_bwrap (enforce)'
+AS_USER=(sudo -u "$S_USER" -H env "PATH=$(dirname "$NODE"):/usr/local/bin:/usr/bin:/bin")
+WORK="$(mktemp -d)" || refuse "cannot make a temp dir"
+trap 'rm -rf -- "$WORK"' EXIT
+
+# Row253: bounded unprivileged metadata, parsed by root without running copy code.
+# row253-supervisor-begin
+IFS= read -r -d '' TESTER_SUPERVISOR <<'MOSAIC_TESTER_SUPERVISOR' || :
+set +m
+seconds="$1" setsid_bin="$2" sleep_bin="$3"; shift 3
+child="" timer="" verified=0
+stat_fields() {
+    local pid="$1" raw="" rest
+    # EOF is expected: stat has no NUL. Decide on content, not read's status.
+    IFS= read -r -d '' raw < "/proc/$pid/stat" 2>/dev/null || :
+    [ -n "$raw" ] || { [ -e "/proc/$pid/stat" ] && return 1; return 3; }
+    rest="${raw##*) }"
+    [ "$rest" != "$raw" ] || return 1
+    read -r ST_STATE ST_PARENT ST_GROUP ST_SESSION _ <<< "$rest"
+    [[ "$ST_STATE" =~ ^[A-Za-z]$ && "$ST_SESSION" =~ ^[0-9]+$ && "$ST_GROUP" =~ ^[0-9]+$ ]]
+}
+clock_cs() {
+    local boot spare
+    read -r boot spare < /proc/uptime || return 1
+    [[ "$boot" =~ ^([0-9]+)\.([0-9]{2})$ ]] || return 1
+    CLOCK_CS=$((10#${BASH_REMATCH[1]} * 100 + 10#${BASH_REMATCH[2]}))
+}
+clean_session() {
+    local entry pid rc live until=""
+    while :; do
+        live=0
+        for entry in /proc/[0-9]*/stat; do
+            pid="${entry%/stat}"; pid="${pid##*/}"
+            rc=0; stat_fields "$pid" || rc=$?
+            [ "$rc" != 3 ] || continue
+            [ "$rc" = 0 ] || return 1
+            [ "$ST_SESSION" = "$child" ] || continue
+            case "$ST_STATE" in Z|X) continue ;; esac
+            live=1
+            if ! kill -KILL "$pid" 2>/dev/null; then
+                rc=0; stat_fields "$pid" || rc=$?
+                [ "$rc" = 3 ] || { [ "$rc" = 0 ] && { [ "$ST_STATE" = Z ] || [ "$ST_STATE" = X ]; }; } || return 1
+            fi
+        done
+        [ "$live" != 0 ] || return 0
+        clock_cs || return 1
+        # Inventory pass 1 is outside the bounded confirmation/retry budget.
+        [ -n "$until" ] || until=$((CLOCK_CS + 25))
+        [ "$CLOCK_CS" -lt "$until" ] || return 1
+        "$sleep_bin" 0.01
+    done
+}
+finish() {
+    local rc="$?"
+    trap - EXIT HUP INT TERM
+    if [ "$verified" = 1 ]; then
+        clean_session || rc=86
+    elif [ -n "$child" ]; then
+        kill -KILL "$child" 2>/dev/null || :
+    fi
+    [ -z "$child" ] || wait "$child" 2>/dev/null || :
+    if [ -n "$timer" ]; then kill -KILL "$timer" 2>/dev/null || :; wait "$timer" 2>/dev/null || :; fi
+    exit "$rc"
+}
+trap finish EXIT
+trap 'exit 88' HUP INT TERM
+"$sleep_bin" "$seconds" & timer=$!
+"$setsid_bin" "$@" & child=$!
+# Allow session creation the whole inner budget, rather than a 200 ms margin.
+while :; do
+    rc=0; stat_fields "$child" || rc=$?
+    [ "$rc" = 0 ] || exit 85
+    if [ "$ST_SESSION" = "$child" ]; then verified=1; break; fi
+    kill -0 "$timer" 2>/dev/null || exit 81
+    "$sleep_bin" 0.002
+done
+[ "$verified" = 1 ] || exit 85
+while kill -0 "$child" 2>/dev/null; do
+    kill -0 "$timer" 2>/dev/null || exit 81
+    "$sleep_bin" 0.01
+done
+kill -0 "$timer" 2>/dev/null || exit 81
+rc=0; wait "$child" || rc=$?
+[ "$rc" = 0 ] || exit 87
+exit 0
+MOSAIC_TESTER_SUPERVISOR
+# row253-supervisor-end
+
+tester_tools() {
+    local input target p st magic
+    TS_BASH="" TS_SETSID="" TS_SLEEP="" TS_TIMEOUT="" TS_HEAD=""
+    for input in /bin/bash /usr/bin/setsid /usr/bin/sleep /usr/bin/timeout /usr/bin/head; do
+        target="$(realpath -e -- "$input" 2>/dev/null)" || return 1
+        case "$target" in /home/*|/root/*|/run/user/*) return 1 ;; esac
+        [ -f "$target" ] && [ -x "$target" ] && [ ! -L "$target" ] || return 1
+        p="$target"
+        while :; do
+            st="$(stat -c '%u %a' -- "$p" 2>/dev/null)" || return 1
+            [ "${st% *}" = 0 ] && [[ "${st#* }" =~ ^[0-7]{3,4}$ ]] && (( (8#${st#* } & 8#022) == 0 )) || return 1
+            [ "$p" != / ] || break
+            p="${p%/*}"; [ -n "$p" ] || p=/
+        done
+        magic="$(/usr/bin/od -An -tx1 -N4 -- "$target" 2>/dev/null | tr -d ' \n')"
+        [ "$magic" = 7f454c46 ] || return 1
+        case "$input" in
+            /bin/bash) TS_BASH="$target" ;; /usr/bin/setsid) TS_SETSID="$target" ;;
+            /usr/bin/sleep) TS_SLEEP="$target" ;; /usr/bin/timeout) TS_TIMEOUT="$target" ;;
+            /usr/bin/head) TS_HEAD="$target" ;;
+        esac
+    done
+}
+tester_capture_reason() {
+    case "$1" in
+        81) echo inner-timeout ;; 82) echo outer-timeout ;; 83) echo output-limit ;;
+        84) echo supervisor-tools ;; 85) echo inner-session ;; 86) echo inner-cleanup ;;
+        *) echo inner-command ;;
+    esac
+}
+tester_capture() (
+    local inner="$1" outer="$2" maximum="$3" user="$4" home="$5" path="$6" file notice child="" rc=0; shift 6
+    tester_tools || exit 84
+    file="$(mktemp)" || exit 88
+    notice="$(mktemp)" || { rm -f -- "$file"; exit 88; }
+    trap 'if [ -n "$child" ]; then kill -KILL -- "-$child" 2>/dev/null || :; wait "$child" 2>/dev/null || :; fi; rm -f -- "$file" "$notice"' EXIT
+    trap 'exit 88' HUP INT TERM
+    LC_ALL=C "$TS_TIMEOUT" --verbose --signal=KILL "${outer}s" "$TS_BASH" -c '
+        set -o pipefail
+        maximum="$1"; head_bin="$2"; shift 2
+        "$@" 2>/dev/null | "$head_bin" -c "$((maximum + 1))"
+    ' -- "$maximum" "$TS_HEAD" sudo -u "$user" -H env -i "HOME=$home" "PATH=$path" "$TS_BASH" -c "$TESTER_SUPERVISOR" -- "$inner" "$TS_SETSID" "$TS_SLEEP" "$@" > "$file" 2> "$notice" &
+    child=$!
+    wait "$child" 2>/dev/null || rc=$?
+    kill -KILL -- "-$child" 2>/dev/null || :
+    # Only GNU timeout and the trusted head can write this root-side channel.
+    if [ "$rc" = 137 ] && [[ "$(<"$notice")" == *': sending signal KILL to command '* ]]; then exit 82; fi
+    [ "$(wc -c < "$file")" -le "$maximum" ] || exit 83
+    [ "$rc" = 0 ] || { case "$rc" in 81|85|86|87|88) exit "$rc" ;; *) exit 87 ;; esac; }
+    cat -- "$file"
+)
+
+TESTER_QUERY='import {readFileSync} from "node:fs";import {pathToFileURL} from "node:url";const m=await import(pathToFileURL(process.argv[1]).href);const s=m.loadSystem();console.log(JSON.stringify({dataRoot:s.dataRoot,socket:readFileSync(process.argv[2],"utf8").includes("MOSAIC_TESTER_SOCKET_V1")}));'
+tester_facts() {
+    local LC_ALL=C pattern='^\{"dataRoot":"([A-Za-z0-9/._@+-]+)","socket":(true|false)\}$'
+    [[ "$1" =~ $pattern ]] || return 1
+    TS_DATA="${BASH_REMATCH[1]}" TS_MARKED="${BASH_REMATCH[2]}"
+}
+tester_location() {
+    local LC_ALL=C data="$1" home="$2" uid="$3" prefix="$4" part at="" st
+    TS_REASON="" TS_SOCKET=""
+    case "$data" in /*) ;; *) TS_REASON=not-absolute; return 1 ;; esac
+    case "$data" in *[!A-Za-z0-9/._@+-]*) TS_REASON=not-ascii; return 1 ;; esac
+    case "$data/" in */./*|*/../*|*//* ) TS_REASON=not-normalized; return 1 ;; esac
+    [ "${data%/}" = "$data" ] || { TS_REASON=not-normalized; return 1; }
+    case "$data" in "$home"/*) ;; *) TS_REASON=outside-home; return 1 ;; esac
+    case "$home/" in /home/*|/root/*|/run/user/*|/tmp/*|/var/tmp/*) TS_REASON=protected-private-home; return 1 ;; esac
+    TS_SOCKET="$data/console/tester.sock"
+    [ "${#TS_SOCKET}" -le 107 ] || { TS_REASON=too-long; return 1; }
+    local -a parts
+    IFS=/ read -r -a parts <<< "$data"
+    for part in "${parts[@]}"; do
+        [ -n "$part" ] || continue
+        at="$at/$part"
+        [ ! -L "$prefix$at" ] || { TS_REASON=symlink-component; return 1; }
+        if [ -e "$prefix$at" ]; then
+            [ -d "$prefix$at" ] || { TS_REASON=component-type; return 1; }
+        fi
+    done
+    [ "${5:-}" != observe ] || return 0
+    local parent="$prefix$data/console"
+    [ ! -L "$parent" ] || { TS_REASON=symlink-parent; return 1; }
+    if [ -e "$parent" ]; then
+        [ -d "$parent" ] || { TS_REASON=parent-type; return 1; }
+        st="$(stat -c '%u %a' -- "$parent")" || { TS_REASON=parent-stat; return 1; }
+        [ "${st% *}" = "$uid" ] || { TS_REASON=parent-owner; return 1; }
+        [[ "${st#* }" =~ ^[0-7]{3,4}$ ]] && (( (8#${st#* } & 8#077) == 0 )) || { TS_REASON=parent-mode; return 1; }
+    fi
+}
+# tester-location-end
+
+
+# --- Output ---
+
+MARKS=(pass FAIL closed "accepted Q182+Q183" "accepted Q183" "accepted mos-1096" unnamed)
+declare -A COUNT=()
+F_FAILED=0
+# Text the stack's user wrote, made safe to print: printable ASCII, one line, at most 200 bytes.
+clean() { tr -c '[:print:]' ' ' <<< "$1" | cut -c1-200 | sed 's/ *$//'; }
+line() { local id="$1" path="$2" mark="$3"; shift 3; echo "$id $path $mark $*"; COUNT[$mark]=$(( ${COUNT[$mark]:-0} + 1 )); }
+fpass() { line "$1" "$2" pass "${@:3}"; }
+ffail() { line "$1" "$2" FAIL "${@:3}"; F_FAILED=1; }
+
+# --- The account database: getent on the host, the seam's files under --root ---
+
+db() {
+    if [ -n "$ROOT" ]; then
+        if [ $# -gt 1 ]; then awk -F: -v k="$2" '$1 == k' "$ROOT/etc/$1"; else cat "$ROOT/etc/$1"; fi
+    else
+        getent "$@"
+    fi
+}
+uid_of() { db passwd "$1" | cut -d: -f3; }
+gid_of() { db passwd "$1" | cut -d: -f4; }
+# The group ids USER belongs to, as `id -G USER` prints them: the primary gid, then each group
+# whose member list names USER.
+groups_of() {
+    local g; g="$(gid_of "$1")"
+    [ -n "$g" ] || return 0
+    { echo "$g"; db group | awk -F: -v u="$1" '{ n = split($4, m, ","); for (i = 1; i <= n; i++) if (m[i] == u) print $3 }'; } | awk '!seen[$0]++'
+}
+names_of_groups() { local g; for g in "$@"; do db group | awk -F: -v g="$g" '$3 == g { print $1 }'; done; }
+MOSAIC_UID="$(uid_of "$S_USER")"
+[[ "$MOSAIC_UID" =~ ^[1-9][0-9]*$ ]] || refuse "stack account has no non-root uid"
+[ "$(db passwd "$S_USER" | cut -d: -f6)" = "$S_HOME" ] || refuse "saved home differs from account home"
+QUERY="$(tester_capture 5 7 4096 "$S_USER" "$S_HOME" "$(dirname "$NODE"):/usr/local/bin:/usr/bin:/bin" "$NODE" --input-type=module -e "$TESTER_QUERY" "$COPY/packages/cli/src/config.mjs" "$COPY/packages/webui/src/cli.mjs")" || refuse "tester config query $(tester_capture_reason "$?")"
+tester_facts "$QUERY" || refuse "tester config query has invalid facts"
+[ "$TS_MARKED" = true ] || refuse "target does not support --tester-socket"
+tester_location "$TS_DATA" "$S_HOME" "$MOSAIC_UID" "$ROOT" observe || refuse "tester path refuses $TS_REASON"
+TESTER_PATH="$TS_SOCKET"
+
+# --- systemd, /proc and listeners ---
+
+# KEY=VALUE lines for UNIT's properties.
+unit_show() { local u="$1"; shift; systemctl show "$u" "${@/#/-p}" 2>/dev/null; }
+prop() { sed -n "s/^$2=//p" <<< "$1" | tail -n 1; }
+# The real, effective, saved and filesystem uids of PID, space-separated.
+proc_uids() { awk '$1 == "Uid:" { print $2, $3, $4, $5 }' "$ROOT/proc/$1/status" 2>/dev/null; }
+proc_label() { local l; l="$(cat "$ROOT/proc/$1/attr/current" 2>/dev/null)" || return 1; printf '%s' "${l%$'\n'}"; }
+# One `ADDRESS PIDS` line per TCP listener on port $1, PIDS comma-separated.
+listeners() {
+    ss -Hltnp 2>/dev/null | awk -v p="$1" '{
+        n = split($4, a, ":"); if (a[n] != p) next
+        addr = substr($4, 1, length($4) - length(p) - 1); pids = ""; s = $0
+        while (match(s, /pid=[0-9]+/)) { pids = pids (pids == "" ? "" : ",") substr(s, RSTART + 4, RLENGTH - 4); s = substr(s, RSTART + RLENGTH) }
+        print addr, pids
+    }'
+}
+# 0 when port $1 has a listener and every one is on 127.0.0.1, held by pid $2 alone.
+loopback_by() {
+    local addr pids p any=0
+    [ -n "$2" ] && [ "$2" != 0 ] || return 1
+    while read -r addr pids; do
+        [ -n "$addr" ] || continue
+        any=1
+        [ "$addr" = 127.0.0.1 ] || return 1
+        for p in ${pids//,/ }; do [ "$p" = "$2" ] || return 1; done
+        [ -n "$pids" ] || return 1
+    done <<< "$(listeners "$1")"
+    [ "$any" = 1 ]
+}
+listener_text() { local t; t="$(listeners "$1" | tr '\n' ';')"; echo "${t:-none}"; }
+
+BUS_SHOW="$(unit_show "$BUS_UNIT" ActiveState User MainPID)"
+CON_SHOW="$(unit_show "$CON_UNIT" ActiveState User MainPID)"
+CON_PID="$(prop "$CON_SHOW" MainPID)"
+
+# --- F checks ---
+
+check_f1() {
+    local u show state user pid uids why=""
+    for u in "$BUS_UNIT" "$CON_UNIT"; do
+        if [ "$u" = "$BUS_UNIT" ]; then show="$BUS_SHOW"; else show="$CON_SHOW"; fi
+        state="$(prop "$show" ActiveState)" user="$(prop "$show" User)" pid="$(prop "$show" MainPID)"
+        uids="$(proc_uids "${pid:-0}")"
+        [ "$state" = active ] || { why+="$u is ${state:-unknown}; "; continue; }
+        [ "$user" = "$S_USER" ] || { why+="$u has User=${user:-unset}; "; continue; }
+        [ -n "$MOSAIC_UID" ] && [ "$uids" = "$MOSAIC_UID $MOSAIC_UID $MOSAIC_UID $MOSAIC_UID" ] ||
+            why+="$u MainPID ${pid:-none} has uids '${uids:-unreadable}', not $S_USER's ${MOSAIC_UID:-unknown}; "
+    done
+    if [ -z "$why" ]; then fpass F1 units-user "$BUS_UNIT and $CON_UNIT are active as $S_USER (uid $MOSAIC_UID)"
+    else ffail F1 units-user "${why%; }"; fi
+}
+
+check_f2() {
+    local rc=0
+    curl -fsS --max-time 10 -o /dev/null "http://127.0.0.1:$PORT/healthz" 2>/dev/null || rc=$?
+    if [ "$rc" != 0 ]; then ffail F2 console-loopback "curl http://127.0.0.1:$PORT/healthz exited $rc"
+    elif ! loopback_by "$PORT" "$CON_PID"; then ffail F2 console-loopback "port $PORT listeners are '$(listener_text "$PORT")', not 127.0.0.1 by the Console's MainPID ${CON_PID:-none}"
+    else fpass F2 console-loopback "healthz answers, and $PORT is bound to 127.0.0.1 only, by MainPID $CON_PID"; fi
+}
+
+# F5's scan: an outer /usr/bin/bwrap owned by the stack's user with a claude descendant. Sets F5_OK
+# when one pair has both labels exactly, F5_WHY to the last mismatch otherwise.
+F5_OK="" F5_WHY="no /usr/bin/bwrap process of $S_USER with a claude descendant was seen while the reply was pending"
+scan_f5() {
+    local pid ppid uids kids q c argv0 comm lo lc
+    local -A parent=() children=() bw=()
+    # One read of every PPid line and one of every exe link, so a scan stays short on a busy host.
+    while read -r pid ppid; do
+        parent[$pid]="$ppid" children[$ppid]+=" $pid"
+    done < <(grep -H '^PPid:' "$ROOT"/proc/[0-9]*/status 2>/dev/null | sed -n 's#^.*/proc/\([0-9]*\)/status:PPid:[[:space:]]*\([0-9]*\)$#\1 \2#p')
+    while read -r pid; do
+        [[ "$pid" =~ ^[0-9]+$ ]] && [ -n "${parent[$pid]:-}" ] && bw[$pid]=1
+    done < <(find "$ROOT/proc" -mindepth 2 -maxdepth 2 -name exe -lname /usr/bin/bwrap -printf '%h\n' 2>/dev/null | sed 's#.*/##')
+    for pid in "${!bw[@]}"; do
+        [ -z "${bw[${parent[$pid]}]:-}" ] || continue
+        uids="$(proc_uids "$pid")"
+        [ -n "$MOSAIC_UID" ] && [ "${uids%% *}" = "$MOSAIC_UID" ] || continue
+        # Every descendant, breadth first.
+        kids=() q=("$pid")
+        while [ ${#q[@]} -gt 0 ]; do
+            for c in ${children[${q[0]}]:-}; do kids+=("$c") q+=("$c"); done
+            q=("${q[@]:1}")
+        done
+        for c in "${kids[@]}"; do
+            argv0="$(tr '\0' '\n' < "$ROOT/proc/$c/cmdline" 2>/dev/null | sed -n 1p)"
+            comm="$(cat "$ROOT/proc/$c/comm" 2>/dev/null)"
+            [[ "${argv0##*/}" == claude* ]] || [[ "$comm" == claude* ]] || continue
+            lo="$(proc_label "$pid")" lc="$(proc_label "$c")"
+            if [ "$lo" = "$LABEL_OUTER" ] && [ "$lc" = "$LABEL_CHILD" ]; then
+                F5_OK="bwrap $pid reads '$lo' and its claude descendant $c reads '$lc'"; return 0
+            fi
+            F5_WHY="bwrap $pid reads '$lo' and its claude descendant $c reads '$lc', not '$LABEL_OUTER' and '$LABEL_CHILD'"
+        done
+    done
+    return 1
+}
+
+# F3 and F5 together: the message goes out in the background and the scan runs until it is answered.
+check_f3_f5() {
+    local marker text rc=0 out err n tpid
+    marker="case1-accept-$(od -An -N6 -tx1 /dev/urandom | tr -d ' \n')"
+    text="$marker: this is the Case 1 acceptance; reply with one short line."
+    timeout 330 "${AS_USER[@]}" "$COPY/scripts/mosaic" talk chief "$text" --business "$BUSINESS" --tester --wait 300 > "$WORK/talk.out" 2> "$WORK/talk.err" &
+    tpid=$!
+    while :; do
+        scan_f5 && break
+        kill -0 "$tpid" 2>/dev/null || break
+        sleep 0.5
+    done
+    wait "$tpid" || rc=$?
+    # Both the sent line and the reply are on stdout; an error is on stderr.
+    out="$(cat "$WORK/talk.out")" err="$(cat "$WORK/talk.err")"
+    n="$(grep -c . <<< "$out")"
+    if [ "$rc" = 0 ] && grep -q "^sent [^ ]* to chief" <<< "$out" && [ "$n" -ge 2 ]; then
+        fpass F3 tester-reply "chief replied to $marker"
+    else
+        ffail F3 tester-reply "talk exited $rc with $n lines on stdout; last: $(clean "$(tail -n 1 <<< "${err:-$out}")")"
+    fi
+    if [ -n "$F5_OK" ]; then F5_LINE=(fpass "$F5_OK"); else F5_LINE=(ffail "$F5_WHY"); fi
+}
+
+check_f4() {
+    local rc=0 out
+    out="$("${AS_USER[@]}" "$COPY/scripts/case2-precheck.sh" --business "$BUSINESS" --profile factory 2>&1)" || rc=$?
+    if [ "$rc" = 0 ]; then fpass F4 precheck "case2-precheck.sh --profile factory exits 0"
+    else ffail F4 precheck "case2-precheck.sh --profile factory exited $rc; last: $(clean "$(tail -n 1 <<< "$out")")"; fi
+}
+
+check_f6() {
+    local want="/opt/mosaic-stack/claude-$CLAUDE_PIN/" v
+    [[ "$CLAUDE" == "$want"* ]] || { ffail F6 claude-pin "--claude $CLAUDE is not under $want"; return; }
+    [[ "$CLAUDE/" != */../* ]] || { ffail F6 claude-pin "--claude $CLAUDE has a .. segment"; return; }
+    v="$("${AS_USER[@]}" "$CLAUDE" --version 2>/dev/null | sed -n 1p)"
+    if [ "$v" = "$CLAUDE_PIN (Claude Code)" ]; then fpass F6 claude-pin "$CLAUDE prints '$v'"
+    else ffail F6 claude-pin "$CLAUDE --version prints '$(clean "$v")', not '$CLAUDE_PIN (Claude Code)'"; fi
+}
+
+# The PM check confirm runs (stack-release.sh pm_external): exactly one live launches list entry for
+# launch.by, for this business. The stack's user runs the whole check and prints one result line.
+F7_JS='
+const {readFileSync}=require("node:fs");const {spawnSync}=require("node:child_process");
+const [file,cli,b]=process.argv.slice(1);
+let by;
+try{by=JSON.parse(readFileSync(file,"utf8")).launch?.by}catch(e){console.log(`fail cannot read ${file}: ${e.code??"not JSON"}`);process.exit(0)}
+if(typeof by!=="string"||!by){console.log("fail the business file has no launch.by");process.exit(0)}
+const r=spawnSync(cli,["launches","list","--json"],{encoding:"utf8"});
+if(r.status!==0){console.log(`fail launches list exited ${r.status}`);process.exit(0)}
+let l;try{l=JSON.parse(r.stdout)}catch{console.log("fail launches list printed no JSON");process.exit(0)}
+const live=Array.isArray(l)?l.filter((x)=>x&&x.instance===by&&x.live===true):[];
+console.log(live.length!==1?`fail ${live.length} live launches of ${by}`:live[0].business!==b?`fail the live launch of ${by} is for ${live[0].business}`:`ok ${by} run ${live[0].run}`);'
+check_f7() {
+    local out
+    out="$("${AS_USER[@]}" "$NODE" -e "$F7_JS" -- "$BUSINESS_FILE" "$COPY/scripts/mosaic" "$BUSINESS" 2>/dev/null | sed -n 1p)"
+    if [[ "$out" =~ ^ok\ [a-z0-9][a-z0-9-]*\ run\ [A-Za-z0-9._-]+$ ]]; then fpass F7 pm-live "one live launch: ${out#ok }"
+    else ffail F7 pm-live "$(clean "${out#fail }")"; fi
+}
+
+check_f8() {
+    local s
+    s="$(stat -c '%U %a %F' -- "$ROOT$CRED" 2>/dev/null)" || s="missing"
+    if [ ! -L "$ROOT$CRED" ] && [ "$s" = "$S_USER 600 regular file" ]; then fpass F8 credential-file "$CRED is '$s'"
+    else ffail F8 credential-file "$CRED is '$s', not '$S_USER 600 regular file'"; fi
+}
+
+# Empty when $1 and every directory above it, up to /, are the running user's (root's on the host) with
+# no group or other write: case2-unit.sh's root_only rule for --node, checked again before root runs it.
+# Otherwise the first path that breaks the rule. A symlink breaks it, because its mode is 777.
+not_root_only() {
+    local p="$1" st
+    while :; do
+        st="$(stat -c '%u %a' -- "$ROOT$p" 2>/dev/null)" || { echo "$p (cannot stat)"; return; }
+        [ "${st% *}" = "$(id -u)" ] && (( (8#${st#* } & 8#022) == 0 )) || { echo "$p (uid ${st% *}, mode ${st#* })"; return; }
+        [ "$p" = / ] && return
+        p="$(dirname -- "$p")"
+    done
+}
+
+check_f9() {
+    local s v bad
+    s="$(stat -c '%U:%G %a %F' -- "$ROOT$SETTINGS" 2>/dev/null)" || s="missing"
+    [ ! -L "$ROOT$SETTINGS" ] && [ "$s" = "root:root 644 regular file" ] || { ffail F9 autoupdater-off "$SETTINGS is '$s', not 'root:root 644 regular file'"; return; }
+    # Root runs node here, so it runs only the pinned path, and only when nothing but root can replace it.
+    [ "$NODE" = "/opt/mosaic-stack/node-$NODE_PIN/bin/node" ] || { ffail F9 autoupdater-off "root won't run --node $NODE: it is not the --node-pin path"; return; }
+    bad="$(not_root_only "$NODE")"
+    [ -z "$bad" ] || { ffail F9 autoupdater-off "root won't run --node $NODE: $bad is not root's alone"; return; }
+    v="$("$ROOT$NODE" -e 'const s=JSON.parse(require("node:fs").readFileSync(process.argv[1],"utf8"));process.stdout.write(JSON.stringify(s?.env?.DISABLE_AUTOUPDATER??null))' -- "$ROOT$SETTINGS" 2>/dev/null)" || v="unreadable"
+    if [ "$v" = '"1"' ]; then fpass F9 autoupdater-off "$SETTINGS is root:root 0644 with env.DISABLE_AUTOUPDATER \"1\""
+    else ffail F9 autoupdater-off "$SETTINGS env.DISABLE_AUTOUPDATER is $v, not \"1\""; fi
+}
+
+check_f10() {
+    local want="/opt/mosaic-stack/node-$NODE_PIN/bin/node" v
+    [ "$NODE" = "$want" ] || { ffail F10 node-pin "--node $NODE is not $want"; return; }
+    v="$("${AS_USER[@]}" "$NODE" --version 2>/dev/null | sed -n 1p)"
+    if [ "$v" = "$NODE_PIN" ]; then fpass F10 node-pin "$NODE prints $v"
+    else ffail F10 node-pin "$NODE --version prints '$(clean "$v")', not $NODE_PIN"; fi
+}
+
+check_f11() {
+    local d="$ROOT$DATA_ROOT/discord" found
+    if [ -L "$d" ]; then ffail F11 no-discord "$DATA_ROOT/discord is a symlink"; return; fi
+    [ -d "$d" ] || { fpass F11 no-discord "$DATA_ROOT/discord is absent"; return; }
+    found="$(find "$d" -maxdepth 1 -name '*.json' -printf '%f ' 2>/dev/null)"
+    if [ -z "$found" ]; then fpass F11 no-discord "$DATA_ROOT/discord holds no binding"
+    else ffail F11 no-discord "$DATA_ROOT/discord holds bindings: ${found% }"; fi
+}
+
+# --- P checks ---
+
+check_p1() {
+    local out
+    out="$(sudo -l -U "$S_USER" 2>&1)"
+    if grep -q "is not allowed to run sudo" <<< "$out"; then line P1 "$S_USER-sudo" closed "sudo -l: $(clean "$(sed -n 1p <<< "$out")")"
+    else line P1 "$S_USER-sudo" unnamed "sudo -l: $(clean "$(tr '\n' ' ' <<< "$out")")"; fi
+}
+
+check_p2() {
+    local gs keys="$ROOT$S_HOME/.ssh/authorized_keys" kstate n
+    gs="$(groups_of "$S_USER" | tr '\n' ' ')"; gs="${gs% }"
+    n="$(wc -w <<< "$gs")"
+    if [ ! -e "$keys" ] && [ ! -L "$keys" ]; then kstate=absent
+    elif [ -f "$keys" ] && [ ! -L "$keys" ] && [ ! -s "$keys" ]; then kstate=empty
+    else kstate=present; fi
+    if [ "$n" = 1 ] && [ "$kstate" != present ]; then line P2 "$S_USER-groups-keys" closed "id -G is '$gs'; authorized_keys is $kstate"
+    else line P2 "$S_USER-groups-keys" unnamed "id -G is '$gs'; authorized_keys is $kstate"; fi
+}
+
+check_p3() {
+    local n
+    n="$(sudo -l -U localadmin 2>&1 | grep -c NOPASSWD)"
+    line P3 localadmin-sudo "accepted Q183" "sudo -l -U localadmin lists $n NOPASSWD lines"
+}
+
+check_p4() { line P4 pve-root-pbs "accepted Q182+Q183" "root on pve over VM 1008, and PBS backups that hold $S_HOME with the credential; this script can't see pve"; }
+
+check_p5() {
+    local gs reach
+    if [ -z "$(uid_of jarvis)" ]; then line P5 jarvis-reach closed "no jarvis account"; return; fi
+    gs="$(names_of_groups $(groups_of jarvis) | tr '\n' ' ')"
+    reach="$(tr ' ' '\n' <<< "$gs" | grep -xE 'sudo|docker|lxd' | tr '\n' ' ')"
+    if [ -z "$reach" ]; then line P5 jarvis-reach closed "jarvis is in none of sudo, docker and lxd (groups: ${gs% })"
+    else line P5 jarvis-reach unnamed "jarvis is in ${reach% }"; fi
+}
+
+check_p6() {
+    local g m members bad=0
+    for g in sudo docker lxd; do
+        members="$(db group "$g" | cut -d: -f4)"
+        for m in ${members//,/ }; do
+            [ "$g" = sudo ] && [ "$m" = localadmin ] && continue
+            line P6 "group-$g" unnamed "$m is a member of $g"; bad=1
+        done
+    done
+    [ "$bad" = 1 ] || line P6 group-members closed "sudo holds only localadmin, and docker and lxd have no members"
+}
+
+check_p7() {
+    local found
+    found="$(grep -rlw -- "$S_USER" "$ROOT/etc/sudoers.d" 2>/dev/null | sed "s#^$ROOT##" | tr '\n' ' ')"
+    if [ -z "$found" ]; then line P7 sudoers-d closed "no file under /etc/sudoers.d names $S_USER"
+    else line P7 sudoers-d unnamed "files naming $S_USER: ${found% }"; fi
+}
+
+check_p8() {
+    local other
+    other="$(listeners 7331)$(listeners 7333)"
+    if loopback_by "$PORT" "$CON_PID" && [ -z "$other" ]; then
+        line P8 lan-listeners closed "$PORT is on 127.0.0.1 only by MainPID $CON_PID; no TCP listener on 7331 or 7333; tester uses $TESTER_PATH"
+    else
+        line P8 lan-listeners unnamed "$PORT: $(listener_text "$PORT"); 7333: $(listener_text 7333); 7331: $(listener_text 7331); Console MainPID ${CON_PID:-none}"
+    fi
+}
+
+check_p9() {
+    local out n missing=() rc=0 err mg others
+    out="$("$ROOT$HOSTCHECK" --check 2>/dev/null)"
+    for n in 1 2 3 4 5 6; do grep -q "^ok $n " <<< "$out" || missing+=("hostcheck item $n has no ok line")
+    done
+    err="$(sudo -u jarvis /usr/bin/bwrap --version 2>&1 >/dev/null)" || rc=$?
+    [ "$rc" != 0 ] && grep -q "Permission denied" <<< "$err" || missing+=("sudo -u jarvis /usr/bin/bwrap --version exited $rc without Permission denied")
+    mg="$(gid_of "$S_USER")"
+    [ -n "$mg" ] && [ -z "$(db group "$S_USER" | cut -d: -f4)" ] || missing+=("group $S_USER lists members, or $S_USER has no group")
+    others="$(db passwd | awk -F: -v g="$mg" -v u="$S_USER" '$4 == g && $1 != u { print $1 }' | tr '\n' ' ')"
+    [ -z "$others" ] || missing+=("other accounts have $S_USER's gid $mg: ${others% }")
+    if [ ${#missing[@]} = 0 ]; then
+        line P9 bwrap-userns "accepted mos-1096" "hostcheck items 1-6 ok, jarvis is denied bwrap, and group $S_USER has no other member"
+    else
+        for n in "${missing[@]}"; do line P9 bwrap-userns unnamed "$n"; done
+    fi
+}
+
+# P10 is an observation of mutable same-uid state, never a closure ruling.
+TESTER_PEER='import socket,struct,sys
+s=socket.socket(socket.AF_UNIX,socket.SOCK_STREAM)
+try:
+ s.settimeout(1)
+ s.connect(sys.argv[1])
+ p=struct.unpack("3i",s.getsockopt(socket.SOL_SOCKET,socket.SO_PEERCRED,12))
+ print(*p)
+finally:
+ s.close()'
+tester_snapshot() {
+    local parent="${TESTER_PATH%/*}" p s pid
+    [ ! -L "$ROOT$parent" ] && [ ! -L "$ROOT$TESTER_PATH" ] || return 1
+    p="$(stat -c '%u %a %F %d %i' -- "$ROOT$parent" 2>/dev/null)" || return 1
+    s="$(stat -c '%u %a %F %d %i' -- "$ROOT$TESTER_PATH" 2>/dev/null)" || return 1
+    [[ "$p" =~ ^$MOSAIC_UID\ 700\ directory\ [0-9]+\ [0-9]+$ ]] || return 1
+    [[ "$s" =~ ^$MOSAIC_UID\ 600\ socket\ [0-9]+\ [0-9]+$ ]] || return 1
+    pid="$(prop "$(unit_show "$CON_UNIT" MainPID)" MainPID)"
+    [[ "$pid" =~ ^[1-9][0-9]*$ ]] && [ "$pid" = "$CON_PID" ] || return 1
+    [ "$(proc_uids "$pid")" = "$MOSAIC_UID $MOSAIC_UID $MOSAIC_UID $MOSAIC_UID" ] || return 1
+    printf '%s|%s|%s' "$pid" "$p" "$s"
+}
+tester_python() {
+    local real bad magic
+    # Resolve the system entry, then validate the target and every ancestor.
+    [ -f "$ROOT/usr/bin/python3" ] && [ -x "$ROOT/usr/bin/python3" ] || return 1
+    real="$(realpath -e -- "$ROOT/usr/bin/python3" 2>/dev/null)" || return 1
+    [ -z "$ROOT" ] || real="${real#"$ROOT"}"
+    case "$real" in /home/*|/root/*|/run/user/*|"$S_HOME"/*) return 1 ;; esac
+    bad="$(not_root_only "$real")"; [ -z "$bad" ] || return 1
+    bad="$(not_root_only /usr/bin)"; [ -z "$bad" ] || return 1
+    magic="$(od -An -tx1 -N4 -- "$ROOT$real" 2>/dev/null | tr -d ' \n')"
+    [ "$magic" = 7f454c46 ] || return 1
+    printf '%s' "$real"
+}
+check_p10() {
+    local floor before after python peer pid uid gid why="" pattern='^([1-9][0-9]{0,9}) ([0-9]{1,10}) ([0-9]{1,10})$'
+    floor="$(cat "$ROOT/proc/sys/net/ipv4/ip_unprivileged_port_start" 2>/dev/null)"
+    [[ "$floor" =~ ^[0-9]{1,5}$ ]] && [ "$floor" -gt "$PORT" ] || why=floor
+    before="$(tester_snapshot)" || why=metadata
+    python="$(tester_python)" || why=interpreter
+    if [ -z "$why" ]; then
+        peer="$(tester_capture 2 4 128 "$S_USER" "$S_HOME" "$(dirname "$NODE"):/usr/local/bin:/usr/bin:/bin" "$python" -I -S -c "$TESTER_PEER" "$TESTER_PATH")" || why="probe-$(tester_capture_reason "$?")"
+        if [[ "$peer" =~ $pattern ]]; then
+            pid="${BASH_REMATCH[1]}" uid="${BASH_REMATCH[2]}" gid="${BASH_REMATCH[3]}"
+            [ "$pid" = "$CON_PID" ] && [ "$uid" = "$MOSAIC_UID" ] && [ "$gid" -le 2147483647 ] || why=peer
+        else [ -n "$why" ] || why=probe; fi
+        after="$(tester_snapshot)" || why=metadata
+        [ "$before" = "$after" ] || why=changed
+    fi
+    if [ -z "$why" ]; then
+        line P10 tester-socket-squat unnamed "boundary=observed path=$TESTER_PATH parent=0700 owner=$MOSAIC_UID socket=0600 peer_pid=$pid peer_uid=$uid floor=$floor port=$PORT; hostile same-uid substitution remains"
+    else
+        line P10 tester-socket-squat unnamed "boundary=failed reason=$why path=$TESTER_PATH MainPID=${CON_PID:-none}; hostile same-uid substitution remains"
+    fi
+}
+
+check_p11() {
+    local en before
+    en="$(systemctl is-enabled mosaic-hostcheck.service 2>/dev/null)"
+    before="$(prop "$(unit_show mosaic-hostcheck.service Before)" Before)"
+    if [ "$en" = enabled ] && grep -qxF -- "$BUS_UNIT" <<< "${before// /$'\n'}"; then
+        line P11 hostcheck-before-bus closed "mosaic-hostcheck.service is enabled, and its Before= names $BUS_UNIT"
+    else
+        line P11 hostcheck-before-bus unnamed "mosaic-hostcheck.service is '${en:-unknown}', Before='$before'; it needs enabled and $BUS_UNIT"
+    fi
+}
+
+check_f1
+check_f2
+F5_LINE=()
+check_f3_f5
+check_f4
+"${F5_LINE[0]}" F5 bwrap-label "${F5_LINE[@]:1}"
+check_f6
+check_f7
+check_f8
+check_f9
+check_f10
+check_f11
+check_p1; check_p2; check_p3; check_p4; check_p5; check_p6
+check_p7; check_p8; check_p9; check_p10; check_p11
+
+for m in "${MARKS[@]}"; do echo "count $m ${COUNT[$m]:-0}"; done
+if [ "$F_FAILED" = 0 ]; then echo "case1-accept: every F check passes; send the whole output to Duckworth, and each unnamed line to Mos"; exit 0; fi
+echo "case1-accept: an F check failed, so the row fails"
+exit 1
@@ -0,0 +1,717 @@
+// Row 195 (#1693): scripts/case1-accept.sh, root's acceptance run on the Case 1 host. Design r7 section 5
+// (agents/darkwing/work/queue-195/DESIGN.md); deviations in agents/darkwing/work/queue-195/BUILD.md.
+// Every case runs the script with --root on a scratch host tree: /etc, /proc, /srv/mosaic, /opt and the
+// host check live under it. Fake systemctl, curl, ss, sudo and stat on PATH record their argv; the fake
+// sudo runs the stack's user's commands from the tree. Nothing here reads or writes the real /etc,
+// /proc or /srv, and the stand-in credential is not a credential.
+import { test } from "node:test";
+import assert from "node:assert/strict";
+import { spawnSync } from "node:child_process";
+import { chmodSync, existsSync, mkdirSync, readFileSync, renameSync, rmSync, symlinkSync, writeFileSync } from "node:fs";
+import { dirname, join } from "node:path";
+import { fileURLToPath } from "node:url";
+import { tmp } from "./helpers.mjs";
+import { CASE_SUDO_SESSION, recordedLivePids, killRecordedPids, fixtureGuard, cleanupFixture, pollFixtureGone, blockingQuerySource } from "./case-sudo-fixture.mjs";
+
+const REPO = fileURLToPath(new URL("../../../", import.meta.url));
+const SCRIPT = join(REPO, "scripts", "case1-accept.sh");
+const COPY = "0123456789abcdef0123456789abcdef01234567";
+const NODE_PIN = "v24.1.0", CLAUDE_PIN = "2.1.0";
+const NODE = `/opt/mosaic-stack/node-${NODE_PIN}/bin/node`;
+const CLAUDE = `/opt/mosaic-stack/claude-${CLAUDE_PIN}/node_modules/@anthropic-ai/claude-code/bin/claude.exe`;
+const HOME = "/srv/mosaic";
+const CLI = `${HOME}/.local/share/mosaic-stack/copies/${COPY}/scripts/mosaic`;
+const PRECHECK = `${HOME}/.local/share/mosaic-stack/copies/${COPY}/scripts/case2-precheck.sh`;
+const CRED = `${HOME}/.config/mosaic-dev/secrets/claude-session.env`;
+const CRED_VALUE = "stand-in-not-a-credential-7f3e2a";
+const AS_MOSAIC = `-u mosaic -H env PATH=/opt/mosaic-stack/node-${NODE_PIN}/bin:/usr/local/bin:/usr/bin:/bin`;
+const ARGS = ["--profile", "factory", "--user", "mosaic", "--home", HOME, "--business", "mosaic-stack", "--copy", COPY,
+  "--node", NODE, "--claude", CLAUDE, "--pm", "--", "--port", "732", "--business", "mosaic-stack", "--tester-socket"];
+const OUTER = "bwrap (enforce)", CHILD = "bwrap//&unpriv_bwrap (enforce)";
+const MARKS = ["pass", "FAIL", "closed", "accepted Q182+Q183", "accepted Q183", "accepted mos-1096", "unnamed"];
+const P_PASS = { P1: "closed", P2: "closed", P3: "accepted Q183", P4: "accepted Q182+Q183", P5: "closed", P6: "closed",
+  P7: "closed", P8: "closed", P9: "accepted mos-1096", P10: "unnamed", P11: "closed" };
+const PASSWD = "root:x:0:0:root:/root:/bin/bash\nmosaic:x:997:997::/srv/mosaic:/usr/sbin/nologin\nlocaladmin:x:1000:1000::/home/localadmin:/bin/bash\njarvis:x:1001:1001::/home/jarvis:/bin/bash\n";
+const GROUP = "root:x:0:\nsudo:x:27:localadmin\nmosaic:x:997:\nlxd:x:998:\ndocker:x:999:\nlocaladmin:x:1000:\njarvis:x:1001:\n";
+const SS = "LISTEN 0 511 127.0.0.1:732 0.0.0.0:* users:((\"node\",pid=200,fd=21))\n"
+  + "LISTEN 0 4096 0.0.0.0:22 0.0.0.0:* users:((\"sshd\",pid=900,fd=3))\n";
+const HOSTCHECK_OK = [1, 2, 3, 4, 5, 6, 7].map((n) => `ok ${n} item ${n} holds`).join("\n") + "\nnote bubblewrap 0.9.0 is the install pin\n";
+
+function put(file, text, mode) {
+  mkdirSync(dirname(file), { recursive: true });
+  writeFileSync(file, text);
+  if (mode) chmodSync(file, mode);
+}
+const edit = (file, f) => writeFileSync(file, f(readFileSync(file, "utf8")));
+const log = (name) => `printf '%s' ${JSON.stringify(name)} >> "$HC/calls.log"; printf ' %s' "$@" >> "$HC/calls.log"; echo >> "$HC/calls.log"`;
+
+// Fakes on PATH. Each records its argv and answers from a file in the state directory.
+const FAKES = {
+  systemctl: `case "$1" in
+  show) [ -f "$HC/show-$2" ] && cat "$HC/show-$2" ;;
+  is-enabled) cat "$HC/enabled-$2" 2>/dev/null || { echo disabled; exit 1; } ;;
+esac`,
+  curl: `exit "$(cat "$HC/curl-rc")"`,
+  ss: `cat "$HC/ss"`,
+  od: `if [ "$1" = -An ] && [ "$2" = -tx1 ] && [ "$3" = -N4 ]; then
+  [ -f "$HC/elf" ] && cat "$HC/elf" || echo 7f454c46
+else exec /usr/bin/od "$@"; fi`,
+  // The credential and the settings file answer from the state directory, as root would see them, and
+  // only those calls are recorded; everything else is the real stat, which reads the args file.
+  stat: `case "\${@: -1}" in
+  *claude-session.env) ${log("stat")}; cat "$HC/stat-cred" ;;
+  *console/tester.sock) cat "$HC/stat-socket" ;;
+  *console) [ "$2" = '%u %a %F %d %i' ] && cat "$HC/stat-parent" || echo "997 700" ;;
+  *managed-settings.json) ${log("stat")}; cat "$HC/stat-settings" ;;
+  *) exec /usr/bin/stat "$@" ;;
+esac`,
+  // -l -U USER prints the state file; -u jarvis is the bwrap probe; -u mosaic -H env PATH=... CMD runs
+  // CMD from the tree, with the PATH entries and each absolute argument that exists there moved under it.
+  sudo: `${CASE_SUDO_SESSION}
+case "$1" in
+  -l) [ -f "$HC/sudo-l-$3" ] && cat "$HC/sudo-l-$3"; exit 0 ;;
+  -u) ;;
+  *) exit 97 ;;
+esac
+user="$2"; shift 2
+if [ "$user" = jarvis ]; then cat "$HC/jarvis-bwrap" >&2; exit "$(cat "$HC/jarvis-bwrap-rc")"; fi
+[ "$user" = mosaic ] && [ "$1" = -H ] && [ "$2" = env ] || exit 98
+shift 2
+if [ "$1" = -i ]; then
+ [ "$2" = HOME=/srv/mosaic ] || exit 98
+ shift 2
+fi
+[[ "$1" == PATH=* ]] || exit 98
+p="\${1#PATH=}"; shift
+np=""; IFS=: read -ra parts <<< "$p"; for x in "\${parts[@]}"; do np+="$ROOT_DIR$x:"; done
+cmd="$1"; shift
+args=(); for a in "$@"; do if [[ "$a" == /* ]] && [ -e "$ROOT_DIR$a" ]; then args+=("$ROOT_DIR$a"); else args+=("$a"); fi; done
+export HOME="$ROOT_DIR/srv/mosaic" PATH="$np$PATH"
+[ ! -e "$ROOT_DIR$cmd" ] || cmd="$ROOT_DIR$cmd"
+case_sudo_run "$HC" "$cmd" "\${args[@]}"`,
+};
+
+// Executables inside the tree, run by the fake sudo or by the script itself. Node marks a run outside
+// the fake sudo, which sets HOME to the stack's home, so a test can tell whether root ran it.
+const NODE_STUB = `[ "$HOME" = "$ROOT_DIR/srv/mosaic" ] || touch "$HC/node-as-root"
+[ "\${1:-}" = --version ] && { cat "$HC/node-version"; exit 0; }
+exec "$REAL_NODE" "$@"`;
+// The real Python payload runs against a mock socket object, never an OS listener.
+const PYTHON_STUB = `[ -f "$HC/peer-output" ] && { cat "$HC/peer-output"; exit "$(cat "$HC/peer-status")"; }
+[ -f "$HC/peer-hang" ] && {
+ here="$BASHPID"; read -r sid < <(/bin/ps -o sid= -p "$here")
+ echo "$here" > "$HC/peer-pid"; printf '%s %s\\n' "$here" "$sid" >> "$HC/query-pids"
+ trap '' TERM HUP; exec sleep 60
+}
+if [ -f "$HC/peer-change" ]; then cat "$HC/peer-change" > "$HC/stat-socket"; fi
+if [ -f "$HC/peer-pid-change" ]; then cat "$HC/peer-pid-change" > "$HC/show-mosaic-webui.service"; fi
+exec /usr/bin/python3 -I -S -c '
+import os,socket,struct,sys
+class Fake:
+ def __init__(self,*a): assert a==(socket.AF_UNIX,socket.SOCK_STREAM)
+ def settimeout(self,n): assert n==1
+ def connect(self,p): assert p.endswith("/console/tester.sock")
+ def getsockopt(self,*a):
+  assert a==(socket.SOL_SOCKET,socket.SO_PEERCRED,12)
+  return struct.pack("3i",*[int(x) for x in open(os.environ["HC"]+"/peer").read().split()])
+ def close(self): pass
+socket.socket=Fake
+payload=sys.argv[4]
+sys.argv=["probe",sys.argv[5]]
+exec(payload)
+' "$@"`;
+const TREE = {
+  "/usr/bin/python3": PYTHON_STUB,
+  [NODE]: NODE_STUB,
+  [CLAUDE]: `[ "\${1:-}" = --version ] && cat "$HC/claude-version"; exit 0`,
+  [CLI]: `${log("mosaic")}
+case "$1" in
+  talk) case "$(cat "$HC/talk-mode")" in
+      reply) echo "sent ab12cd34 to chief"; echo "[chief -> tester] seen" ;;
+      noreply) echo "sent ab12cd34 to chief"; echo "no reply from chief within 300 s" >&2; exit 1 ;;
+      sentonly) echo "sent ab12cd34 to chief" ;;
+    esac ;;
+  launches) cat "$HC/launches.json" ;;
+  *) exit 2 ;;
+esac`,
+  [PRECHECK]: `${log("precheck")}
+echo "precheck: done"; exit "$(cat "$HC/precheck-rc")"`,
+  "/usr/local/lib/mosaic-stack/hostcheck.sh": `${log("hostcheck")}
+cat "$HC/hostcheck-out"`,
+};
+
+function proc(root, pid, { ppid, uid = 997, exe, argv0 = "x", comm = "x", label }) {
+  const d = join(root, "proc", String(pid));
+  put(join(d, "status"), `Name:\t${comm}\nState:\tS (sleeping)\nPPid:\t${ppid}\nUid:\t${uid}\t${uid}\t${uid}\t${uid}\n`);
+  put(join(d, "cmdline"), `${argv0}\0--x\0`);
+  put(join(d, "comm"), `${comm}\n`);
+  rmSync(join(d, "exe"), { force: true });
+  if (exe) symlinkSync(exe, join(d, "exe"));
+  if (label !== undefined) put(join(d, "attr", "current"), label);
+}
+
+// A scratch Case 1 host where every F check passes and every P check is closed or accepted.
+function host(t) {
+  const dir = tmp(t, "c1accept-");
+  const root = join(dir, "root"), hc = join(dir, "hc"), bin = join(dir, "bin");
+  const args = join(root, "etc", "mosaic-stack", "dev.args");
+  put(args, ARGS.join("\n") + "\n", 0o644);
+  put(join(root, "etc", "passwd"), PASSWD);
+  put(join(root, "etc", "group"), GROUP);
+  put(join(root, "etc", "sudoers.d", "90-localadmin"), "localadmin ALL=(ALL) NOPASSWD: ALL\n");
+  put(join(root, "etc", "claude-code", "managed-settings.json"), JSON.stringify({ env: { DISABLE_AUTOUPDATER: "1" } }));
+  put(join(root, CRED), `CLAUDE_CODE_OAUTH_TOKEN=${CRED_VALUE}\n`, 0o600);
+  put(join(root, HOME, ".config", "mosaic-dev", "businesses", "mosaic-stack.json"), JSON.stringify({ id: "mosaic-stack", launch: { by: "pm" } }));
+  put(join(root, "proc", "sys", "net", "ipv4", "ip_unprivileged_port_start"), "1024\n");
+  proc(root, 1, { ppid: 0, uid: 0, exe: "/usr/lib/systemd/systemd", comm: "systemd" });
+  proc(root, 100, { ppid: 1, exe: NODE, argv0: NODE, comm: "node" });
+  proc(root, 200, { ppid: 1, exe: NODE, argv0: NODE, comm: "node" });
+  proc(root, 300, { ppid: 100, exe: "/usr/bin/bwrap", argv0: "/usr/bin/bwrap", comm: "bwrap", label: `${OUTER}\n` });
+  proc(root, 301, { ppid: 300, exe: NODE, argv0: NODE, comm: "node", label: `${CHILD}\n` });
+  proc(root, 302, { ppid: 301, exe: CLAUDE, argv0: CLAUDE, comm: "claude.exe", label: `${CHILD}\n` });
+  // A root bwrap with a mislabelled claude child, which F5 must pass over.
+  proc(root, 400, { ppid: 1, uid: 0, exe: "/usr/bin/bwrap", argv0: "/usr/bin/bwrap", comm: "bwrap", label: "unconfined\n" });
+  proc(root, 401, { ppid: 400, uid: 0, argv0: "claude", comm: "claude", label: "unconfined\n" });
+  const state = {
+    "[email protected]": "ActiveState=active\nUser=mosaic\nMainPID=100\n",
+    "show-mosaic-webui.service": "ActiveState=active\nUser=mosaic\nMainPID=200\n",
+    "show-mosaic-hostcheck.service": "[email protected] mosaic-webui.service multi-user.target\n",
+    "enabled-mosaic-hostcheck.service": "enabled\n",
+    "curl-rc": "0", ss: SS,
+    "stat-parent": "997 700 directory 9 10\n", "stat-socket": "997 600 socket 9 11\n", peer: "200 997 997\n",
+    "stat-cred": "mosaic 600 regular file\n", "stat-settings": "root:root 644 regular file\n",
+    "sudo-l-mosaic": "User mosaic is not allowed to run sudo on dev-53.\n",
+    "sudo-l-localadmin": "User localadmin may run the following commands on dev-53:\n    (ALL : ALL) ALL\n    (ALL) NOPASSWD: ALL\n",
+    "jarvis-bwrap": "sudo: unable to execute /usr/bin/bwrap: Permission denied\n", "jarvis-bwrap-rc": "1",
+    "node-version": `${NODE_PIN}\n`, "claude-version": `${CLAUDE_PIN} (Claude Code)\n`,
+    "talk-mode": "reply", "precheck-rc": "0", "hostcheck-out": HOSTCHECK_OK,
+    "launches.json": JSON.stringify([
+      { instance: "pm", live: true, business: "mosaic-stack", run: "r-0002" },
+      { instance: "pm", live: false, business: "mosaic-stack", run: "r-0001" },
+      { instance: "dev-1", live: true, business: "mosaic-stack", run: "r-0003" },
+    ]),
+  };
+  for (const [name, text] of Object.entries(state)) put(join(hc, name), text);
+  for (const [name, body] of Object.entries(FAKES)) put(join(bin, name), `#!/usr/bin/env bash\n${name === "stat" ? "" : log(name)}\n${body}\n`, 0o755);
+  for (const [path, body] of Object.entries(TREE)) put(join(root, path), `#!/usr/bin/env bash\n${body}\n`, 0o755);
+  const copyRoot = join(root, HOME, '.local/share/mosaic-stack/copies', COPY);
+  put(join(copyRoot, 'packages/cli/src/config.mjs'), `import fs from 'node:fs';export const loadSystem=()=>({dataRoot:fs.readFileSync(${JSON.stringify(join(hc,'data-root'))},'utf8').trim()});`);
+  put(join(copyRoot, 'packages/webui/src/cli.mjs'), '// MOSAIC_TESTER_SOCKET_V1\n');
+  put(join(hc, 'data-root'), `${HOME}/.mosaic-dev\n`);
+  put(join(root, HOME, '.mosaic-dev/console/tester.sock'), 'stand-in socket metadata only');
+  chmodSync(join(root, HOME, '.mosaic-dev/console'), 0o700);
+  // F9 runs node only when it and each directory above it have no group or other write, whatever the umask.
+  for (let d = dirname(NODE); d !== "/"; d = dirname(d)) chmodSync(join(root, d), 0o755);
+  chmodSync(root, 0o755);
+  return { dir, root, hc, bin, args };
+}
+
+function run(h, extra = {}, argv = ["--business", "mosaic-stack", "--args", "/etc/mosaic-stack/dev.args", "--claude-pin", CLAUDE_PIN, "--node-pin", NODE_PIN, "--root", h.root]) {
+  const r = spawnSync(SCRIPT, argv, {
+    encoding: "utf8",
+    env: { ...process.env, PATH: `${h.bin}:${process.env.PATH}`, HC: h.hc, ROOT_DIR: h.root, REAL_NODE: process.execPath, TMPDIR: h.dir, ...extra },
+  });
+  const lines = r.stdout.split("\n").filter(Boolean);
+  // Each check line as { id, path, mark, evidence }.
+  const checks = lines.filter((l) => /^[FP][0-9]+ /.test(l)).map((l) => {
+    const [id, path, ...rest] = l.split(" ");
+    const tail = rest.join(" ");
+    const mark = MARKS.find((m) => tail === m || tail.startsWith(`${m} `));
+    return { id, path, mark, evidence: tail.slice(mark?.length ?? 0).trim(), line: l };
+  });
+  return { status: r.status, out: r.stdout, err: r.stderr, lines, checks };
+}
+const calls = (h, name) => (existsSync(join(h.hc, "calls.log")) ? readFileSync(join(h.hc, "calls.log"), "utf8") : "")
+  .split("\n").filter((l) => l === name || l.startsWith(`${name} `)).map((l) => l.slice(name.length + 1));
+const failed = (r) => r.checks.filter((c) => c.mark === "FAIL").map((c) => c.id);
+const marksOf = (r, id) => r.checks.filter((c) => c.id === id).map((c) => c.mark);
+const mustRun = (h, extra) => { const r = run(h, extra); assert.ok(r.status === 0 || r.status === 1, r.out + r.err); return r; };
+
+test('row253 socket observation uses configured root, metadata and the Console peer without sending bytes', t=>{
+  const h=host(t), data='/srv/mosaic/custom-data';
+  put(join(h.hc,'data-root'),data+'\n');
+  put(join(h.root,data,'console/tester.sock'),'metadata stand-in');
+  const r=run(h);
+  assert.equal(r.status,0,r.out+r.err);
+  assert.match(r.out,/P10 tester-socket-squat unnamed boundary=observed path=\/srv\/mosaic\/custom-data\/console\/tester.sock/);
+  assert.match(r.out,/peer_pid=200 peer_uid=997/);
+  assert.match(r.out,/hostile same-uid substitution remains/);
+  assert.doesNotMatch(r.out,/accepted mos-1101/);
+  assert.deepEqual(marksOf(r,'P8'),['closed']);
+});
+
+test('row253 P10 refuses unsafe metadata, wrong peers and an unsafe Python without claiming closure',t=>{
+  const faults={
+    'parent-mode': h=>put(join(h.hc,'stat-parent'),'997 755 directory 9 10\n'),
+    'parent-owner': h=>put(join(h.hc,'stat-parent'),'998 700 directory 9 10\n'),
+    'socket-mode': h=>put(join(h.hc,'stat-socket'),'997 660 socket 9 11\n'),
+    'socket-owner': h=>put(join(h.hc,'stat-socket'),'998 600 socket 9 11\n'),
+    'socket-type': h=>put(join(h.hc,'stat-socket'),'997 600 regular file 9 11\n'),
+    symlink:h=>{const p=join(h.root,HOME,'.mosaic-dev/console/tester.sock');rmSync(p);symlinkSync('/absent',p);},
+    peer:h=>put(join(h.hc,'peer'),'200 998 997\n'),
+    'peer-pid':h=>put(join(h.hc,'peer'),'555 997 997\n'),
+    'python-mode':h=>chmodSync(join(h.root,'usr/bin/python3'),0o777),
+    'python-missing':h=>rmSync(join(h.root,'usr/bin/python3')),
+    'python-not-elf':h=>put(join(h.hc,'elf'),'23212f62\n'),
+    'peer-malformed':h=>{put(join(h.hc,'peer-output'),'200 997 997 extra\n');put(join(h.hc,'peer-status'),'0');},
+    'peer-error':h=>{put(join(h.hc,'peer-output'),'200 997 997\n');put(join(h.hc,'peer-status'),'1');},
+    'peer-uid-fields':h=>proc(h.root,200,{ppid:1,uid:998,exe:NODE,comm:'node'}),
+    'changed-inode':h=>put(join(h.hc,'peer-change'),'997 600 socket 9 99\n'),
+    'changed-pid':h=>put(join(h.hc,'peer-pid-change'),'ActiveState=active\nUser=mosaic\nMainPID=201\n'),
+    floor:h=>put(join(h.root,'proc/sys/net/ipv4/ip_unprivileged_port_start'),'700\n'),
+  };
+  for(const [name,fault] of Object.entries(faults)){
+    const h=host(t);fault(h);const r=run(h);
+    assert.equal(r.status,name==='peer-uid-fields'?1:0,`${name}: ${r.out}${r.err}`);
+    assert.match(r.out,/P10 tester-socket-squat unnamed boundary=failed/,name);
+    assert.doesNotMatch(r.out,/boundary=observed/,name);
+  }
+});
+
+test('row253 acceptance rejects bad config and unsupported copies before talk',t=>{
+  const faults={
+    outside:h=>put(join(h.hc,'data-root'),'/srv/mosaic2/data\n'),
+    dot:h=>put(join(h.hc,'data-root'),'/srv/mosaic/./data\n'),
+    absent:h=>rmSync(join(h.root,HOME,'.local/share/mosaic-stack/copies',COPY,'packages/cli/src/config.mjs')),
+    unmarked:h=>put(join(h.root,HOME,'.local/share/mosaic-stack/copies',COPY,'packages/webui/src/cli.mjs'),'// old copy'),
+    schema:h=>put(join(h.root,HOME,'.local/share/mosaic-stack/copies',COPY,'packages/cli/src/config.mjs'),'console.log(JSON.stringify({dataRoot:"/srv/mosaic/.mosaic-dev",socket:true,extra:1}));process.exit(0);'),
+    failed:h=>put(join(h.root,HOME,'.local/share/mosaic-stack/copies',COPY,'packages/cli/src/config.mjs'),'console.log(JSON.stringify({dataRoot:"/srv/mosaic/.mosaic-dev",socket:true}));process.exit(1);'),
+  };
+  for(const [name,fault] of Object.entries(faults)){
+    const h=host(t);fault(h);const r=run(h);
+    assert.equal(r.status,2,`${name}: ${r.out}${r.err}`);assert.equal(r.out,'');
+    assert.match(r.err,/tester (config query|path refuses)|support/);
+    assert.deepEqual(calls(h,'mosaic'),[]);
+  }
+});
+
+test('row253 stalled peer observation ends within its bound without leaving a reader',async t=>{
+  const h=host(t);put(join(h.hc,'peer-hang'),'');
+  const r=run(h);assert.equal(r.status,0,r.out+r.err);
+  assert.match(r.out,/P10 tester-socket-squat unnamed boundary=failed reason=probe/);
+  const pid=Number(readFileSync(join(h.hc,'peer-pid'),'utf8'));
+  let state='gone';
+  for(let n=0;n<50;n++){
+    try{state=readFileSync(`/proc/${pid}/stat`,'utf8').split(') ')[1].split(' ')[0];}catch{state='gone';}
+    if(state==='gone'||state==='Z')break;
+    await new Promise(resolve=>setTimeout(resolve,10));
+  }
+  assert.ok(state==='gone'||state==='Z',`peer helper ${pid} still ${state}`);
+});
+
+test('row253 P8 refuses both retired TCP and board listeners',t=>{
+  for(const port of [7333,7331]){
+    const h=host(t);put(join(h.hc,'ss'),SS+`LISTEN 0 511 127.0.0.1:${port} 0.0.0.0:* users:(("node",pid=200,fd=22))\n`);
+    assert.deepEqual(marksOf(run(h),'P8'),['unnamed']);
+  }
+});
+
+test('row253 C4 acceptance query inner reason holds under both sudo models',async t=>{
+ for(const mode of ['exec','hop']){
+  const h=host(t),files=[join(h.hc,'session-pids'),join(h.hc,'query-pids')];
+  put(join(h.hc,'session-mode'),mode);
+  put(join(h.root,HOME,'.local/share/mosaic-stack/copies',COPY,'packages/cli/src/config.mjs'),blockingQuerySource(files[1]));
+  const capture=cleanupFixture(t,files);const stop=fixtureGuard(t,files);
+  const start=performance.now(),r=run(h),seconds=(performance.now()-start)/1000;capture();
+  assert.equal(r.status,2,r.out+r.err);assert.equal(r.err,'case1-accept: refusing: tester config query inner-timeout\n');
+  assert.ok(seconds<7,`${mode}: ${seconds}s`);assert.equal(r.out,'');assert.deepEqual(calls(h,'mosaic'),[]);
+  assert.deepEqual(await pollFixtureGone(files),[]);await stop();
+ }
+});
+
+test('row253 C4 acceptance query outer reason discards stdout and names residual cleanup',async t=>{
+ for(const mode of ['exec','hop']){
+  const h=host(t),files=[join(h.hc,'session-pids')];put(join(h.hc,'session-mode'),mode);put(join(h.hc,'stall-config'),'');
+  put(join(h.hc,'stall-output'),JSON.stringify({dataRoot:HOME+'/.mosaic-dev',socket:true}));
+  const capture=cleanupFixture(t,files);const stop=fixtureGuard(t,files);
+  const start=performance.now(),r=run(h),seconds=(performance.now()-start)/1000;capture();
+  assert.equal(r.status,2,r.out+r.err);assert.equal(r.err,'case1-accept: refusing: tester config query outer-timeout\n');
+  assert.ok(seconds>=7&&seconds<9,`${mode}: ${seconds}s; 2s preflight slack`);
+  assert.equal(r.out,'');assert.deepEqual(calls(h,'mosaic'),[]);
+  if(mode==='hop')assert.ok(recordedLivePids(files[0]).length>0,'R3 session remains before fixture cleanup');
+  killRecordedPids(files[0]);assert.deepEqual(await pollFixtureGone(files),[],'explicit R3 fixture cleanup');await stop();
+ }
+});
+
+test('row253 C4 acceptance query overflow is output-limit in both models',async t=>{
+ for(const mode of ['exec','hop']){
+  const h=host(t),files=[join(h.hc,'session-pids')];put(join(h.hc,'session-mode'),mode);const capture=cleanupFixture(t,files);
+  put(join(h.root,HOME,'.local/share/mosaic-stack/copies',COPY,'packages/cli/src/config.mjs'),`process.stdout.write('X'.repeat(8192));export const loadSystem=()=>({dataRoot:'${HOME}/.mosaic-dev'});`);
+  const r=run(h);capture();assert.equal(r.status,2,r.out+r.err);assert.equal(r.err,'case1-accept: refusing: tester config query output-limit\n');
+  assert.equal(r.out,'');assert.deepEqual(calls(h,'mosaic'),[]);assert.deepEqual(await pollFixtureGone(files),[]);
+ }
+});
+
+for(const fault of ['inner','outer','overflow'])test(`row253 C4 P10 ${fault} reason holds under both sudo models`,async t=>{
+ for(const mode of ['exec','hop']){
+  const h=host(t),files=[join(h.hc,'session-pids'),join(h.hc,'query-pids')];put(join(h.hc,'session-mode'),mode);
+  const capture=cleanupFixture(t,files);const stop=fixtureGuard(t,files,7000);
+  if(fault==='inner')put(join(h.hc,'peer-hang'),'');
+  if(fault==='outer'){put(join(h.hc,'stall-probe'),'');put(join(h.hc,'stall-output'),'200 997 997\n');}
+  if(fault==='overflow'){put(join(h.hc,'peer-output'),'200 997 997\n'+'X'.repeat(256));put(join(h.hc,'peer-status'),'0');}
+  const start=performance.now(),r=run(h),seconds=(performance.now()-start)/1000;capture();
+  assert.equal(r.status,0,r.out+r.err);
+  const reason=fault==='inner'?'inner-timeout':fault==='outer'?'outer-timeout':'output-limit';
+  assert.match(r.out,new RegExp('P10 tester-socket-squat unnamed boundary=failed reason=probe-'+reason+' '));
+  assert.doesNotMatch(r.out,/boundary=observed/);
+  if(fault==='inner')assert.ok(seconds<4,`${mode}: ${seconds}s includes functional checks`);
+  if(fault==='outer'){
+   assert.ok(seconds>=4&&seconds<6,`${mode}: ${seconds}s; 2s functional-check slack`);
+   if(mode==='hop')assert.ok(recordedLivePids(files[0]).length>0,'stalled supervisor is R3 residual');
+   for(const file of files)killRecordedPids(file);
+  }
+  assert.deepEqual(await pollFixtureGone(files),[],fault==='outer'?'explicit R3 cleanup':mode);await stop();
+ }
+});
+
+// One fault per F check; each makes that check, and only that one, fail.
+const F_FAULTS = {
+  F1: (h) => proc(h.root, 100, { ppid: 1, uid: 0, exe: NODE, comm: "node" }),
+  F2: (h) => put(join(h.hc, "ss"), SS.replace("127.0.0.1:732 ", "0.0.0.0:732 ")),
+  F3: (h) => put(join(h.hc, "talk-mode"), "noreply"),
+  F4: (h) => put(join(h.hc, "precheck-rc"), "1"),
+  F5: (h) => put(join(h.root, "proc", "302", "attr", "current"), "unconfined\n"),
+  F6: (h) => put(join(h.hc, "claude-version"), "2.0.9 (Claude Code)\n"),
+  F7: (h) => put(join(h.hc, "launches.json"), JSON.stringify([{ instance: "pm", live: false, business: "mosaic-stack", run: "r-1" }])),
+  F8: (h) => put(join(h.hc, "stat-cred"), "mosaic 640 regular file\n"),
+  F9: (h) => put(join(h.root, "etc", "claude-code", "managed-settings.json"), JSON.stringify({ env: { DISABLE_AUTOUPDATER: "0" } })),
+  F10: (h) => put(join(h.hc, "node-version"), "v24.0.0\n"),
+  F11: (h) => put(join(h.root, HOME, ".mosaic-dev", "discord", "binding.json"), "{}"),
+};
+
+test("row 195 accept: every check passing exits 0, with each P mark and counts that match the lines", (t) => {
+  const h = host(t);
+  const r = run(h);
+  assert.equal(r.status, 0, r.out + r.err);
+  assert.deepEqual(r.checks.map((c) => c.id), ["F1", "F2", "F3", "F4", "F5", "F6", "F7", "F8", "F9", "F10", "F11",
+    "P1", "P2", "P3", "P4", "P5", "P6", "P7", "P8", "P9", "P10", "P11"]);
+  for (const c of r.checks.filter((x) => x.id.startsWith("F"))) assert.equal(c.mark, "pass", c.line);
+  for (const [id, mark] of Object.entries(P_PASS)) assert.deepEqual(marksOf(r, id), [mark], id);
+  const counts = r.lines.filter((l) => l.startsWith("count ")).map((l) => l.slice(6));
+  assert.deepEqual(counts, MARKS.map((m) => `${m} ${r.checks.filter((c) => c.mark === m).length}`));
+  assert.match(r.lines.at(-1), /^case1-accept: every F check passes/);
+  assert.match(r.out, /^F5 bwrap-label pass bwrap 300 reads 'bwrap \(enforce\)' and its claude descendant 302 reads/m);
+  assert.match(r.out, /^F7 pm-live pass one live launch: pm run r-0002$/m);
+  assert.ok(!(r.out + r.err).includes(CRED_VALUE));
+  assert.ok(existsSync(join(h.hc, "node-as-root")), "F9 runs the pinned, root-only node as root");
+});
+
+test("row 195 accept: exits 1 with each F check failing alone, and its line names it", (t) => {
+  for (const [id, fault] of Object.entries(F_FAULTS)) {
+    const h = host(t);
+    fault(h);
+    const r = mustRun(h);
+    assert.equal(r.status, 1, `${id}: ${r.out}`);
+    assert.deepEqual(failed(r), [id], `${id}: ${r.out}`);
+    assert.equal(r.lines.at(-1), "case1-accept: an F check failed, so the row fails");
+  }
+});
+
+test("row 195 accept: F3 fails on exit 0 with no reply line, and its evidence takes talk's error", (t) => {
+  let h = host(t);
+  put(join(h.hc, "talk-mode"), "sentonly");
+  let r = mustRun(h);
+  assert.deepEqual(failed(r), ["F3"]);
+  assert.match(r.out, /^F3 tester-reply FAIL talk exited 0 with 1 lines on stdout; last: sent ab12cd34 to chief$/m);
+  h = host(t);
+  put(join(h.hc, "talk-mode"), "noreply");
+  r = mustRun(h);
+  assert.match(r.out, /^F3 tester-reply FAIL talk exited 1 with 1 lines on stdout; last: no reply from chief within 300 s$/m);
+});
+
+test("row 195 accept: F1 fails on a unit that isn't active or isn't User=mosaic", (t) => {
+  for (const show of ["ActiveState=failed\nUser=mosaic\nMainPID=0\n", "ActiveState=active\nUser=root\nMainPID=100\n"]) {
+    const h = host(t);
+    put(join(h.hc, "show-mosaic-webui.service"), show);
+    const r = mustRun(h);
+    assert.equal(r.status, 1);
+    assert.ok(failed(r).includes("F1"), r.out);
+  }
+});
+
+test("row 195 accept: F2 fails when healthz doesn't answer and when another pid holds the port", (t) => {
+  let h = host(t);
+  put(join(h.hc, "curl-rc"), "7");
+  let r = mustRun(h);
+  assert.deepEqual(failed(r), ["F2"]);
+  assert.match(r.out, /^F2 console-loopback FAIL curl http:\/\/127\.0\.0\.1:732\/healthz exited 7$/m);
+  h = host(t);
+  put(join(h.hc, "ss"), SS.replace("pid=200,fd=21", "pid=555,fd=4"));
+  r = mustRun(h);
+  assert.deepEqual(failed(r), ["F2"]);
+});
+
+test("row 195 accept: F5 fails on unpriv_bwrap (enforce), on complain and on a trailing space", (t) => {
+  for (const label of ["unpriv_bwrap (enforce)\n", "bwrap//&unpriv_bwrap (complain)\n", `${CHILD} \n`]) {
+    const h = host(t);
+    put(join(h.root, "proc", "302", "attr", "current"), label);
+    const r = mustRun(h);
+    assert.deepEqual(failed(r), ["F5"], `${JSON.stringify(label)}: ${r.out}`);
+  }
+  const h = host(t);
+  put(join(h.root, "proc", "300", "attr", "current"), `${OUTER} \n`);
+  assert.deepEqual(failed(mustRun(h)), ["F5"]);
+});
+
+test("row 195 accept: F5 fails with no bwrap of mosaic's, and passes on comm alone", (t) => {
+  let h = host(t);
+  proc(h.root, 300, { ppid: 100, uid: 1001, exe: "/usr/bin/bwrap", comm: "bwrap", label: `${OUTER}\n` });
+  let r = mustRun(h);
+  assert.deepEqual(failed(r), ["F5"]);
+  assert.match(r.out, /^F5 bwrap-label FAIL no \/usr\/bin\/bwrap process of mosaic/m);
+  h = host(t);
+  proc(h.root, 302, { ppid: 301, argv0: "/proc/self/fd/3", comm: "claude", label: `${CHILD}\n` });
+  assert.deepEqual(failed(mustRun(h)), []);
+});
+
+test("row 195 accept: F6 fails on a stub that prints nothing, on a path outside claude-<pin> and on a .. segment", (t) => {
+  let h = host(t);
+  put(join(h.hc, "claude-version"), "");
+  let r = mustRun(h);
+  assert.deepEqual(failed(r), ["F6"]);
+  h = host(t);
+  const other = CLAUDE.replace(`claude-${CLAUDE_PIN}`, "claude-2.0.9");
+  put(h.args, ARGS.map((a) => (a === CLAUDE ? other : a)).join("\n") + "\n", 0o644);
+  put(join(h.root, other), `#!/usr/bin/env bash\necho "${CLAUDE_PIN} (Claude Code)"\n`, 0o755);
+  r = mustRun(h);
+  assert.deepEqual(failed(r), ["F6"]);
+  assert.match(r.out, /^F6 claude-pin FAIL --claude \S+claude-2\.0\.9\S+ is not under \/opt\/mosaic-stack\/claude-2\.1\.0\/$/m);
+  // Under claude-<pin>/ by prefix, but the binary it names is 2.0.9's, which answers with the pin.
+  h = host(t);
+  const dotdot = CLAUDE.replace(`claude-${CLAUDE_PIN}/`, `claude-${CLAUDE_PIN}/../claude-2.0.9/`);
+  put(h.args, ARGS.map((a) => (a === CLAUDE ? dotdot : a)).join("\n") + "\n", 0o644);
+  put(join(h.root, other), `#!/usr/bin/env bash\necho "${CLAUDE_PIN} (Claude Code)"\n`, 0o755);
+  r = mustRun(h);
+  assert.deepEqual(failed(r), ["F6"], r.out);
+  assert.match(r.out, /^F6 claude-pin FAIL --claude \S+\/claude-2\.1\.0\/\.\.\/claude-2\.0\.9\/\S+ has a \.\. segment$/m);
+});
+
+test("row 195 accept: F7 fails on two live PM launches, one for another business, and no launch.by", (t) => {
+  const two = [{ instance: "pm", live: true, business: "mosaic-stack", run: "a" }, { instance: "pm", live: true, business: "mosaic-stack", run: "b" }];
+  for (const [file, text] of [["launches.json", JSON.stringify(two)], ["launches.json", JSON.stringify([{ instance: "pm", live: true, business: "other", run: "a" }])]]) {
+    const h = host(t);
+    put(join(h.hc, file), text);
+    assert.deepEqual(failed(mustRun(h)), ["F7"]);
+  }
+  const h = host(t);
+  put(join(h.root, HOME, ".config", "mosaic-dev", "businesses", "mosaic-stack.json"), JSON.stringify({ id: "mosaic-stack" }));
+  const r = mustRun(h);
+  assert.deepEqual(failed(r), ["F7"]);
+  assert.match(r.out, /^F7 pm-live FAIL the business file has no launch\.by$/m);
+});
+
+test("row 195 accept: F8 fails on 0640, on another owner and on a symlink, and never prints the credential", (t) => {
+  for (const fault of [
+    (h) => put(join(h.hc, "stat-cred"), "mosaic 640 regular file\n"),
+    (h) => put(join(h.hc, "stat-cred"), "root 600 regular file\n"),
+    (h) => { const f = join(h.root, CRED); rmSync(f); put(`${f}.real`, `X=${CRED_VALUE}\n`, 0o600); symlinkSync(`${f}.real`, f); },
+  ]) {
+    const h = host(t);
+    fault(h);
+    const r = mustRun(h);
+    assert.deepEqual(failed(r), ["F8"], r.out);
+    assert.ok(!(r.out + r.err).includes(CRED_VALUE));
+  }
+});
+
+test("row 195 accept: F9 fails on another owner, a group-writable mode and a number for the flag", (t) => {
+  for (const fault of [
+    (h) => put(join(h.hc, "stat-settings"), "root:root 664 regular file\n"),
+    (h) => put(join(h.hc, "stat-settings"), "mosaic:root 644 regular file\n"),
+    (h) => put(join(h.root, "etc", "claude-code", "managed-settings.json"), JSON.stringify({ env: { DISABLE_AUTOUPDATER: 1 } })),
+  ]) {
+    const h = host(t);
+    fault(h);
+    assert.deepEqual(failed(mustRun(h)), ["F9"]);
+  }
+});
+
+test("row 195 accept: F9 won't run --node as root off the pin path or with a writable directory above it", (t) => {
+  // Another node that works for the stack's user: F9 refuses to run it, and F10 fails on the path.
+  let h = host(t);
+  const other = NODE.replace(NODE_PIN, "v24.0.9");
+  put(h.args, ARGS.map((a) => (a === NODE ? other : a)).join("\n") + "\n", 0o644);
+  put(join(h.root, other), `#!/usr/bin/env bash\n${NODE_STUB}\n`, 0o755);
+  let r = mustRun(h);
+  assert.deepEqual(failed(r), ["F9", "F10"], r.out);
+  assert.match(r.out, /^F9 autoupdater-off FAIL root won't run --node \/opt\/mosaic-stack\/node-v24\.0\.9\/bin\/node: it is not the --node-pin path$/m);
+  assert.ok(!existsSync(join(h.hc, "node-as-root")));
+  // The pinned path, under a group-writable directory and then a symlinked node: F9 alone fails, and
+  // root doesn't run it.
+  for (const [fault, bad] of [
+    [(x) => chmodSync(join(x.root, dirname(NODE)), 0o775), "/opt/mosaic-stack/node-v24\\.1\\.0/bin \\(uid \\d+, mode 775\\)"],
+    [(x) => { const f = join(x.root, NODE); renameSync(f, `${f}.real`); symlinkSync(`${f}.real`, f); }, "/opt/mosaic-stack/node-v24\\.1\\.0/bin/node \\(uid \\d+, mode 777\\)"],
+  ]) {
+    h = host(t);
+    fault(h);
+    r = mustRun(h);
+    assert.deepEqual(failed(r), ["F9"], r.out);
+    assert.match(r.out, new RegExp(`^F9 autoupdater-off FAIL root won't run --node \\S+: ${bad} is not root's alone$`, "m"));
+    assert.ok(!existsSync(join(h.hc, "node-as-root")));
+  }
+});
+
+test("row 195 accept: F11 fails on one *.json under discord/ and passes on an empty directory", (t) => {
+  let h = host(t);
+  put(join(h.root, HOME, ".mosaic-dev", "discord", "chief.json"), "{}");
+  let r = mustRun(h);
+  assert.deepEqual(failed(r), ["F11"]);
+  assert.match(r.out, /^F11 no-discord FAIL \/srv\/mosaic\/\.mosaic-dev\/discord holds bindings: chief\.json$/m);
+  h = host(t);
+  mkdirSync(join(h.root, HOME, ".mosaic-dev", "discord"), { recursive: true });
+  assert.deepEqual(failed(mustRun(h)), []);
+});
+
+// Each P check in its unnamed mark, with the line count each fault makes; none changes the exit.
+const P_FAULTS = {
+  P1: [1, (h) => put(join(h.hc, "sudo-l-mosaic"), "User mosaic may run the following commands on dev-53:\n")],
+  P2: [1, (h) => put(join(h.root, HOME, ".ssh", "authorized_keys"), "ssh-ed25519 AAAA test\n")],
+  P5: [1, (h) => edit(join(h.root, "etc", "group"), (s) => s.replace("docker:x:999:", "docker:x:999:jarvis"))],
+  P6: [2, (h) => edit(join(h.root, "etc", "group"), (s) => s.replace("sudo:x:27:localadmin", "sudo:x:27:localadmin,bob").replace("lxd:x:998:", "lxd:x:998:carol"))],
+  P7: [1, (h) => put(join(h.root, "etc", "sudoers.d", "50-mosaic"), "mosaic ALL=(root) NOPASSWD: /usr/bin/systemctl\n")],
+  P8: [1, (h) => put(join(h.hc, "ss"), `${SS}LISTEN 0 511 0.0.0.0:7331 0.0.0.0:* users:(("node",pid=200,fd=23))\n`)],
+  P9: [3, (h) => { put(join(h.hc, "hostcheck-out"), HOSTCHECK_OK.replace("ok 2 ", "FAIL 2 ").replace("ok 5 ", "FAIL 5 ")); put(join(h.hc, "jarvis-bwrap-rc"), "0"); }],
+  P10: [1, (h) => put(join(h.root, "proc", "sys", "net", "ipv4", "ip_unprivileged_port_start"), "700\n")],
+  P11: [1, (h) => put(join(h.hc, "show-mosaic-hostcheck.service"), "[email protected] multi-user.target\n")],
+};
+
+test("row 195 accept: each P check reports unnamed on its fault, and the exit stays 0", (t) => {
+  for (const [id, [n, fault]] of Object.entries(P_FAULTS)) {
+    const h = host(t);
+    fault(h);
+    const r = run(h);
+    assert.equal(r.status, 0, `${id}: ${r.out}`);
+    assert.deepEqual(marksOf(r, id), Array(n).fill("unnamed"), `${id}: ${r.out}`);
+  }
+});
+
+test("row 195 accept: P2 is unnamed with a supplementary group, and P5 names docker", (t) => {
+  let h = host(t);
+  put(join(h.root, "etc", "group"), GROUP.replace("lxd:x:998:", "lxd:x:998:mosaic"));
+  let r = run(h);
+  assert.equal(r.status, 0);
+  assert.deepEqual(marksOf(r, "P2"), ["unnamed"]);
+  assert.match(r.out, /^P2 mosaic-groups-keys unnamed id -G is '997 998'; authorized_keys is absent$/m);
+  h = host(t);
+  P_FAULTS.P5[1](h);
+  r = run(h);
+  assert.match(r.out, /^P5 jarvis-reach unnamed jarvis is in docker$/m);
+  assert.match(r.out, /^P6 group-docker unnamed jarvis is a member of docker$/m);
+});
+
+test("row 195 accept: P5 is closed with no jarvis account, and P2 with an empty authorized_keys", (t) => {
+  const h = host(t);
+  put(join(h.root, "etc", "passwd"), PASSWD.replace(/^jarvis:.*\n/m, ""));
+  put(join(h.root, HOME, ".ssh", "authorized_keys"), "");
+  const r = run(h);
+  assert.deepEqual(marksOf(r, "P5"), ["closed"]);
+  assert.deepEqual(marksOf(r, "P2"), ["closed"]);
+});
+
+test("row 195 accept: P9 is unnamed once for each item missing", (t) => {
+  const items = {
+    hostcheck: (h) => put(join(h.hc, "hostcheck-out"), HOSTCHECK_OK.replace("ok 3 ", "FAIL 3 ")),
+    jarvis: (h) => { put(join(h.hc, "jarvis-bwrap-rc"), "0"); put(join(h.hc, "jarvis-bwrap"), ""); },
+    member: (h) => put(join(h.root, "etc", "group"), GROUP.replace("mosaic:x:997:", "mosaic:x:997:jarvis")),
+    gid: (h) => put(join(h.root, "etc", "passwd"), `${PASSWD}hermes:x:1002:997::/home/hermes:/bin/bash\n`),
+  };
+  for (const [name, fault] of Object.entries(items)) {
+    const h = host(t);
+    fault(h);
+    const r = run(h);
+    assert.equal(r.status, 0);
+    assert.deepEqual(marksOf(r, "P9"), ["unnamed"], `${name}: ${r.out}`);
+  }
+  const h = host(t);
+  put(join(h.hc, "hostcheck-out"), "");
+  assert.deepEqual(marksOf(run(h), "P9"), Array(6).fill("unnamed"));
+});
+
+test("row253 accept: P10 fails its observation with another peer; P11 with the unit disabled", (t) => {
+  let h = host(t);
+  put(join(h.hc, "peer"), "555 997 997\n");
+  let r = run(h);
+  assert.equal(r.status, 0);
+  assert.deepEqual(marksOf(r, "P10"), ["unnamed"]);
+  assert.match(r.out, /P10 tester-socket-squat unnamed boundary=failed reason=peer/);
+  h = host(t);
+  put(join(h.hc, "enabled-mosaic-hostcheck.service"), "disabled\n");
+  r = run(h);
+  assert.deepEqual(marksOf(r, "P11"), ["unnamed"]);
+});
+
+test("row 195 accept: every P check unnamed together still exits 0", (t) => {
+  const h = host(t);
+  for (const [, fault] of Object.values(P_FAULTS)) fault(h);
+  const r = run(h);
+  assert.equal(r.status, 0, r.out + r.err);
+  assert.deepEqual(failed(r), []);
+  for (const id of ["P1", "P2", "P5", "P6", "P7", "P8", "P9", "P10", "P11"]) assert.ok(marksOf(r, id).every((m) => m === "unnamed"), id);
+  assert.match(r.lines.at(-1), /^case1-accept: every F check passes/);
+});
+
+test("row 195 accept: a bad args file refuses with exit 2 before any check, each for its own reason", (t) => {
+  const bad = {
+    "group write": [(h) => chmodSync(h.args, 0o664), /dev\.args must be \S+'s with no group or other write \(it is uid \d+, mode 664\)$/],
+    symlink: [(h) => { put(`${h.args}.real`, ARGS.join("\n") + "\n", 0o644); rmSync(h.args); symlinkSync(`${h.args}.real`, h.args); }, /no regular file \/etc\/mosaic-stack\/dev\.args$/],
+    "unknown flag": [(h) => put(h.args, ["--send", ...ARGS].join("\n") + "\n", 0o644), /has --send before --, which case2-unit\.sh does not take$/],
+    "two copies": [(h) => put(h.args, ["--copy", COPY, ...ARGS].join("\n") + "\n", 0o644), /needs exactly one --copy before --, not 2$/],
+    "library profile": [(h) => put(h.args, ARGS.map((a) => (a === "factory" ? "library" : a)).join("\n") + "\n", 0o644), /has --profile 'library', not factory$/],
+    "another business": [(h) => put(h.args, ARGS.map((a, i) => (a === "mosaic-stack" && i < 14 ? "acme" : a)).join("\n") + "\n", 0o644), /is for business acme, not mosaic-stack$/],
+    "no tester socket": [(h) => put(h.args, ARGS.slice(0, -1).join("\n") + "\n", 0o644), /needs one bare --tester-socket after --$/],
+    "retired TCP": [(h) => put(h.args, [...ARGS.slice(0,-1),'--tester-port','7333'].join('\n')+'\n',0o644), /case1-accept.sh retires tester TCP; use --tester-socket$/],
+    "socket value": [(h) => put(h.args, [...ARGS,'7333'].join('\n')+'\n',0o644), /unknown serve flag 7333$/],
+    "duplicate socket": [(h) => put(h.args, [...ARGS,'--tester-socket'].join('\n')+'\n',0o644), /needs one bare --tester-socket after --$/],
+    "short copy": [(h) => put(h.args, ARGS.map((a) => (a === COPY ? "abc123" : a)).join("\n") + "\n", 0o644), /lacks a plain --user, --home, --business, --node, --claude or --copy$/],
+    "no file": [(h) => rmSync(h.args), /no regular file \/etc\/mosaic-stack\/dev\.args$/],
+  };
+  for (const [name, [fault, why]] of Object.entries(bad)) {
+    const h = host(t);
+    fault(h);
+    const r = run(h);
+    assert.equal(r.status, 2, `${name}: ${r.out}${r.err}`);
+    assert.match(r.err.trimEnd(), /^case1-accept: refusing: /, name);
+    assert.match(r.err.trimEnd(), why, name);
+    assert.equal(r.out, "", name);
+    assert.ok(!existsSync(join(h.hc, "calls.log")), name);
+  }
+});
+
+test("row 195 accept: usage errors and a run without --root as a user exit 2", (t) => {
+  const h = host(t);
+  let r = run(h, {}, ["--business", "mosaic-stack", "--args", "/etc/mosaic-stack/dev.args", "--node-pin", NODE_PIN, "--root", h.root]);
+  assert.equal(r.status, 2);
+  assert.match(r.err, /^usage: /);
+  r = run(h, {}, ["--business", "mosaic-stack", "--args", "/etc/mosaic-stack/dev.args", "--claude-pin", CLAUDE_PIN, "--node-pin", "24.1.0", "--root", h.root]);
+  assert.equal(r.status, 2);
+  r = run(h, {}, ["--business", "mosaic-stack", "--args", "/etc/mosaic-stack/dev.args", "--claude-pin", CLAUDE_PIN, "--node-pin", NODE_PIN]);
+  assert.equal(r.status, 2);
+  assert.equal(r.err, "case1-accept: refusing: run it as root\n");
+  assert.ok(!existsSync(join(h.hc, "calls.log")));
+});
+
+test("row 195 accept: every in-instance call goes through sudo -u mosaic -H env PATH=<node dir>:...", (t) => {
+  const h = host(t);
+  const r = run(h);
+  assert.equal(r.status, 0, r.out + r.err);
+  const sudo = calls(h, "sudo");
+  const asMosaic = sudo.filter((a) => a.startsWith("-u mosaic"));
+  const isolated = asMosaic.filter(a=>a.startsWith('-u mosaic -H env -i '));
+  assert.equal(isolated.length, 2);
+  for(const a of isolated) assert.ok(a.startsWith(`-u mosaic -H env -i HOME=${HOME} PATH=/opt/mosaic-stack/node-${NODE_PIN}/bin:/usr/local/bin:/usr/bin:/bin `),a);
+  for (const a of asMosaic.filter(a=>!isolated.includes(a))) assert.ok(a.startsWith(`${AS_MOSAIC} /`), a);
+  const cmds = asMosaic.filter(a=>!isolated.includes(a)).map((a) => a.slice(AS_MOSAIC.length + 1).split(" ")[0]);
+  assert.deepEqual([...new Set(cmds)].sort(), [CLI, PRECHECK, CLAUDE, NODE].sort());
+  assert.deepEqual(sudo.filter((a) => !a.startsWith("-u mosaic")).sort(),
+    ["-l -U localadmin", "-l -U mosaic", "-u jarvis /usr/bin/bwrap --version"]);
+  const talk = calls(h, "mosaic").filter((a) => a.startsWith("talk "));
+  assert.equal(talk.length, 1);
+  assert.match(talk[0], /^talk chief case1-accept-[0-9a-f]{12}: .* --business mosaic-stack --tester --wait 300$/);
+  assert.deepEqual(calls(h, "precheck"), ["--business mosaic-stack --profile factory"]);
+});
+
+test("row 195 accept: the host check runs with --check and never --enforce", (t) => {
+  const h = host(t);
+  run(h);
+  assert.deepEqual(calls(h, "hostcheck"), ["--check"]);
+});
@@ -0,0 +1,609 @@
+#!/usr/bin/env bash
+# Case 2 row C2-13a (design 9.3, 10 step 2c): render and install the two
+# system units a hub runs as, [email protected] (enabled as
+# mosaic-bus@<business>.service) and mosaic-webui.service, from the existing
+# templates, which it doesn't change.
+#
+#   case2-unit.sh --user NAME --home DIR --business ID --copy ID --node PATH
+#                 [--profile factory|library] [--pm] [--claude PATH]
+#                 -- SERVE FLAGS
+#
+# Root runs it from a root-owned checkout of the reviewed commit outside
+# <home>, never from the release, because <user> can write the release. It
+# writes both units under /etc/systemd/system as root:root 0644, runs
+# `systemctl daemon-reload`, enables both, then starts the bus and then the
+# Console (Q189). Both come back after a boot on their own. It never links
+# a unit file into place. Root only stats files under <home> and reads bounded
+# stdout from a config/target query run as the stack user through sudo. Root
+# never imports copy code. This adds sudo and GNU timeout to the installer
+# dependencies. The inner query supervisor runs after the uid drop: 5 s inside,
+# 7 s on root's wait. Fixed system Bash, setsid, sleep, timeout and head are
+# resolved and root-validated. Only the config query uses this supervisor.
+# It renders the default instance only.
+#
+# The library profile takes exactly these serve flags, each once:
+#   --port N (1..1023)  --business ID (the unit's)  --public-host NAME
+#   --auth-header HEADER  --allow-user ID  --send
+#   --proof-header NAME  --proof-file PATH
+# The factory profile takes --port N (1..1023) and --business ID, and an
+# optional bare --tester-socket marker. Retired tester TCP refuses. Only factory takes
+# --pm and --claude.
+#
+# On a re-install the installed units must equal the render in everything
+# but the copy id, and both must name one copy, so a re-pin or rollback
+# re-renders the pair together. A unit that was already running stays on its
+# old copy, since `systemctl start` leaves it alone; the script says so and
+# that the bus and Console must restart together, and restarts nothing.
+#
+# Test seams, for packages/cli/tests/case2-unit.test.mjs only:
+#   CASE2_UNIT_DIR        the unit directory, default /etc/systemd/system;
+#                         the root and root-owned checks apply only there
+#   CASE2_SYSTEMCTL       the systemctl command, default systemctl
+#   CASE2_GETENT          the getent command, default getent
+#   CASE2_BUS_TEMPLATE    default packages/cli/systemd/mosaic-bus.service.in
+#   CASE2_WEBUI_TEMPLATE  default packages/webui/systemd/mosaic-webui.service.in
+#
+# Exit 0 done, 1 refused, 4 usage.
+set -euo pipefail
+REPO="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+DEFAULT_UNIT_DIR=/etc/systemd/system
+UNIT_DIR="${CASE2_UNIT_DIR:-$DEFAULT_UNIT_DIR}"
+SYSTEMCTL="${CASE2_SYSTEMCTL:-systemctl}"
+GETENT="${CASE2_GETENT:-getent}"
+BUS_TEMPLATE="${CASE2_BUS_TEMPLATE:-$REPO/packages/cli/systemd/mosaic-bus.service.in}"
+WEBUI_TEMPLATE="${CASE2_WEBUI_TEMPLATE:-$REPO/packages/webui/systemd/mosaic-webui.service.in}"
+[email protected]
+WEBUI_UNIT=mosaic-webui.service
+
+usage() { echo 'usage: case2-unit.sh --user NAME --home DIR --business ID --copy ID --node PATH [--profile factory|library] [--pm] [--claude PATH] -- SERVE FLAGS' >&2; exit 4; }
+die() { echo "case2-unit: $*" >&2; exit 1; }
+# A value the unit carries as itself: no space, %, $, quote, backslash, & or |.
+plain() { case "$1" in *[!A-Za-z0-9/._+-]*) return 1 ;; esac; }
+abs_plain() {
+    case "$1" in /*) ;; *) die "$2 must be an absolute path: $1" ;; esac
+    plain "$1" || die "$2 contains a character the unit cannot carry: $1"
+    case "$1/" in */./*|*/../*|?*//*) die "$2 must be a normalized path: $1" ;; esac
+    [ "$1" = / ] || [ "${1%/}" = "$1" ] || die "$2 must not end in /: $1"
+}
+
+PROFILE=library USER_NAME='' HOME_DIR='' BUSINESS='' COPY_ID='' NODE='' PM=0 CLAUDE='' CLAUDE_SET=0
+while [ $# -gt 0 ]; do
+    case "$1" in
+        --profile|--user|--home|--business|--copy|--node|--claude)
+            [ $# -ge 2 ] || usage
+            case "$1" in
+                --profile) PROFILE="$2" ;; --user) USER_NAME="$2" ;; --home) HOME_DIR="$2" ;;
+                --business) BUSINESS="$2" ;; --copy) COPY_ID="$2" ;; --node) NODE="$2" ;;
+                --claude) CLAUDE="$2"; CLAUDE_SET=1 ;;
+            esac
+            shift 2 ;;
+        --pm) PM=1; shift ;;
+        --) shift; break ;;
+        *) usage ;;
+    esac
+done
+SERVE=("$@")
+[ -n "$USER_NAME" ] && [ -n "$HOME_DIR" ] && [ -n "$BUSINESS" ] && [ -n "$COPY_ID" ] && [ -n "$NODE" ] || usage
+case "$PROFILE" in factory|library) ;; *) die "--profile must be factory or library: $PROFILE" ;; esac
+if [ "$PROFILE" = library ]; then
+    [ "$PM" = 0 ] || die "the library profile refuses --pm"
+    [ "$CLAUDE_SET" = 0 ] || die "the library profile refuses --claude"
+fi
+
+if [ "$UNIT_DIR" = "$DEFAULT_UNIT_DIR" ]; then
+    [ "$(id -u)" = 0 ] || die "writing $DEFAULT_UNIT_DIR needs root"
+fi
+
+# The user, its uid, primary group and home, from the passwd database.
+[[ "$USER_NAME" =~ ^[a-z_][a-z0-9_-]{0,31}$ ]] || die "--user must be a user name: $USER_NAME"
+PW="$("$GETENT" passwd "$USER_NAME")" || die "no user $USER_NAME in the passwd database"
+IFS=: read -r _ _ USER_UID USER_GID _ PW_HOME _ <<<"$PW"
+[[ "$USER_UID" =~ ^[0-9]+$ ]] && [ "$USER_UID" -ne 0 ] || die "--user must not be root: $USER_NAME"
+abs_plain "$HOME_DIR" '--home'
+[ "$HOME_DIR" = "$PW_HOME" ] || die "--home $HOME_DIR is not $USER_NAME's home in the passwd database ($PW_HOME)"
+GR="$("$GETENT" group "$USER_GID")" || die "no group $USER_GID in the group database"
+GROUP="${GR%%:*}"
+[[ "$GROUP" =~ ^[a-z_][a-z0-9_-]{0,31}$ ]] || die "the primary group of $USER_NAME is not a group name: $GROUP"
+
+case "$BUSINESS" in [a-z0-9]*) ;; *) die "--business must be a business id: $BUSINESS" ;; esac
+case "$BUSINESS" in *[!a-z0-9._-]*) die "--business must be a business id: $BUSINESS" ;; esac
+[ "${#BUSINESS}" -le 64 ] || die "--business must be a business id: $BUSINESS"
+
+# The copy: copy_root's rule (scripts/stack-copy.sh:8, :22), under <home>.
+COPIES="$HOME_DIR/.local/share/mosaic-stack/copies"
+[[ "$COPY_ID" =~ ^[0-9a-f]{40}$ ]] || die "--copy must be a full 40-character lower-case commit id: $COPY_ID"
+COPY="$COPIES/$COPY_ID"
+[ -d "$COPY" ] && [ ! -L "$COPY" ] || die "no copy directory $COPY"
+[ -f "$COPY/scripts/mosaic" ] || die "no copy $COPY_ID in $COPIES: $COPY/scripts/mosaic is missing"
+
+# Owned by root and writable by no one else, the file and every directory above it.
+root_only() {
+    local p="$1" what="$2" owner mode
+    while :; do
+        owner="$(stat -c '%u' -- "$p")" || die "cannot stat $p"
+        mode="$(stat -c '%a' -- "$p")" || die "cannot stat $p"
+        [ "$owner" = 0 ] || die "$what: $p is not owned by root"
+        (( (8#$mode & 8#022) == 0 )) || die "$what: $p is writable by its group or others"
+        [ "$p" = / ] && break
+        p="$(dirname -- "$p")"
+    done
+}
+
+# --node: an absolute path to a root-owned regular file outside <home>.
+abs_plain "$NODE" '--node'
+case "$NODE/" in "$HOME_DIR"/*) die "--node must be outside $HOME_DIR: $NODE" ;; esac
+[ ! -L "$NODE" ] || die "--node must not be a symlink; pass its target: $NODE"
+[ -f "$NODE" ] && [ -x "$NODE" ] || die "--node must be an executable regular file: $NODE"
+root_only "$NODE" '--node'
+
+# --claude follows the --node rule, so nothing running as <user> can replace
+# the binary the bus runs.
+if [ "$CLAUDE_SET" = 1 ]; then
+    abs_plain "$CLAUDE" '--claude'
+    case "$CLAUDE/" in "$HOME_DIR"/*) die "--claude must be outside $HOME_DIR: $CLAUDE" ;; esac
+    [ ! -L "$CLAUDE" ] || die "--claude must not be a symlink; pass its target: $CLAUDE"
+    [ -f "$CLAUDE" ] && [ -x "$CLAUDE" ] || die "--claude must be an executable regular file: $CLAUDE"
+    root_only "$CLAUDE" '--claude'
+fi
+
+# The checkout the templates come from, when installing for real.
+if [ "$UNIT_DIR" = "$DEFAULT_UNIT_DIR" ]; then
+    case "$REPO/" in "$HOME_DIR"/*) die "run this from a root-owned checkout outside $HOME_DIR, not $REPO" ;; esac
+    root_only "$BUS_TEMPLATE" 'bus template'
+    root_only "$WEBUI_TEMPLATE" 'Console template'
+fi
+
+# Row253: bounded unprivileged metadata, parsed by root without running copy code.
+# row253-supervisor-begin
+IFS= read -r -d '' TESTER_SUPERVISOR <<'MOSAIC_TESTER_SUPERVISOR' || :
+set +m
+seconds="$1" setsid_bin="$2" sleep_bin="$3"; shift 3
+child="" timer="" verified=0
+stat_fields() {
+    local pid="$1" raw="" rest
+    # EOF is expected: stat has no NUL. Decide on content, not read's status.
+    IFS= read -r -d '' raw < "/proc/$pid/stat" 2>/dev/null || :
+    [ -n "$raw" ] || { [ -e "/proc/$pid/stat" ] && return 1; return 3; }
+    rest="${raw##*) }"
+    [ "$rest" != "$raw" ] || return 1
+    read -r ST_STATE ST_PARENT ST_GROUP ST_SESSION _ <<< "$rest"
+    [[ "$ST_STATE" =~ ^[A-Za-z]$ && "$ST_SESSION" =~ ^[0-9]+$ && "$ST_GROUP" =~ ^[0-9]+$ ]]
+}
+clock_cs() {
+    local boot spare
+    read -r boot spare < /proc/uptime || return 1
+    [[ "$boot" =~ ^([0-9]+)\.([0-9]{2})$ ]] || return 1
+    CLOCK_CS=$((10#${BASH_REMATCH[1]} * 100 + 10#${BASH_REMATCH[2]}))
+}
+clean_session() {
+    local entry pid rc live until=""
+    while :; do
+        live=0
+        for entry in /proc/[0-9]*/stat; do
+            pid="${entry%/stat}"; pid="${pid##*/}"
+            rc=0; stat_fields "$pid" || rc=$?
+            [ "$rc" != 3 ] || continue
+            [ "$rc" = 0 ] || return 1
+            [ "$ST_SESSION" = "$child" ] || continue
+            case "$ST_STATE" in Z|X) continue ;; esac
+            live=1
+            if ! kill -KILL "$pid" 2>/dev/null; then
+                rc=0; stat_fields "$pid" || rc=$?
+                [ "$rc" = 3 ] || { [ "$rc" = 0 ] && { [ "$ST_STATE" = Z ] || [ "$ST_STATE" = X ]; }; } || return 1
+            fi
+        done
+        [ "$live" != 0 ] || return 0
+        clock_cs || return 1
+        # Inventory pass 1 is outside the bounded confirmation/retry budget.
+        [ -n "$until" ] || until=$((CLOCK_CS + 25))
+        [ "$CLOCK_CS" -lt "$until" ] || return 1
+        "$sleep_bin" 0.01
+    done
+}
+finish() {
+    local rc="$?"
+    trap - EXIT HUP INT TERM
+    if [ "$verified" = 1 ]; then
+        clean_session || rc=86
+    elif [ -n "$child" ]; then
+        kill -KILL "$child" 2>/dev/null || :
+    fi
+    [ -z "$child" ] || wait "$child" 2>/dev/null || :
+    if [ -n "$timer" ]; then kill -KILL "$timer" 2>/dev/null || :; wait "$timer" 2>/dev/null || :; fi
+    exit "$rc"
+}
+trap finish EXIT
+trap 'exit 88' HUP INT TERM
+"$sleep_bin" "$seconds" & timer=$!
+"$setsid_bin" "$@" & child=$!
+# Allow session creation the whole inner budget, rather than a 200 ms margin.
+while :; do
+    rc=0; stat_fields "$child" || rc=$?
+    [ "$rc" = 0 ] || exit 85
+    if [ "$ST_SESSION" = "$child" ]; then verified=1; break; fi
+    kill -0 "$timer" 2>/dev/null || exit 81
+    "$sleep_bin" 0.002
+done
+[ "$verified" = 1 ] || exit 85
+while kill -0 "$child" 2>/dev/null; do
+    kill -0 "$timer" 2>/dev/null || exit 81
+    "$sleep_bin" 0.01
+done
+kill -0 "$timer" 2>/dev/null || exit 81
+rc=0; wait "$child" || rc=$?
+[ "$rc" = 0 ] || exit 87
+exit 0
+MOSAIC_TESTER_SUPERVISOR
+# row253-supervisor-end
+
+tester_tools() {
+    local input target p st magic
+    TS_BASH="" TS_SETSID="" TS_SLEEP="" TS_TIMEOUT="" TS_HEAD=""
+    for input in /bin/bash /usr/bin/setsid /usr/bin/sleep /usr/bin/timeout /usr/bin/head; do
+        target="$(realpath -e -- "$input" 2>/dev/null)" || return 1
+        case "$target" in /home/*|/root/*|/run/user/*) return 1 ;; esac
+        [ -f "$target" ] && [ -x "$target" ] && [ ! -L "$target" ] || return 1
+        p="$target"
+        while :; do
+            st="$(stat -c '%u %a' -- "$p" 2>/dev/null)" || return 1
+            [ "${st% *}" = 0 ] && [[ "${st#* }" =~ ^[0-7]{3,4}$ ]] && (( (8#${st#* } & 8#022) == 0 )) || return 1
+            [ "$p" != / ] || break
+            p="${p%/*}"; [ -n "$p" ] || p=/
+        done
+        magic="$(/usr/bin/od -An -tx1 -N4 -- "$target" 2>/dev/null | tr -d ' \n')"
+        [ "$magic" = 7f454c46 ] || return 1
+        case "$input" in
+            /bin/bash) TS_BASH="$target" ;; /usr/bin/setsid) TS_SETSID="$target" ;;
+            /usr/bin/sleep) TS_SLEEP="$target" ;; /usr/bin/timeout) TS_TIMEOUT="$target" ;;
+            /usr/bin/head) TS_HEAD="$target" ;;
+        esac
+    done
+}
+tester_capture_reason() {
+    case "$1" in
+        81) echo inner-timeout ;; 82) echo outer-timeout ;; 83) echo output-limit ;;
+        84) echo supervisor-tools ;; 85) echo inner-session ;; 86) echo inner-cleanup ;;
+        *) echo inner-command ;;
+    esac
+}
+tester_capture() (
+    local inner="$1" outer="$2" maximum="$3" user="$4" home="$5" path="$6" file notice child="" rc=0; shift 6
+    tester_tools || exit 84
+    file="$(mktemp)" || exit 88
+    notice="$(mktemp)" || { rm -f -- "$file"; exit 88; }
+    trap 'if [ -n "$child" ]; then kill -KILL -- "-$child" 2>/dev/null || :; wait "$child" 2>/dev/null || :; fi; rm -f -- "$file" "$notice"' EXIT
+    trap 'exit 88' HUP INT TERM
+    LC_ALL=C "$TS_TIMEOUT" --verbose --signal=KILL "${outer}s" "$TS_BASH" -c '
+        set -o pipefail
+        maximum="$1"; head_bin="$2"; shift 2
+        "$@" 2>/dev/null | "$head_bin" -c "$((maximum + 1))"
+    ' -- "$maximum" "$TS_HEAD" sudo -u "$user" -H env -i "HOME=$home" "PATH=$path" "$TS_BASH" -c "$TESTER_SUPERVISOR" -- "$inner" "$TS_SETSID" "$TS_SLEEP" "$@" > "$file" 2> "$notice" &
+    child=$!
+    wait "$child" 2>/dev/null || rc=$?
+    kill -KILL -- "-$child" 2>/dev/null || :
+    # Only GNU timeout and the trusted head can write this root-side channel.
+    if [ "$rc" = 137 ] && [[ "$(<"$notice")" == *': sending signal KILL to command '* ]]; then exit 82; fi
+    [ "$(wc -c < "$file")" -le "$maximum" ] || exit 83
+    [ "$rc" = 0 ] || { case "$rc" in 81|85|86|87|88) exit "$rc" ;; *) exit 87 ;; esac; }
+    cat -- "$file"
+)
+
+TESTER_QUERY='import {readFileSync} from "node:fs";import {pathToFileURL} from "node:url";const m=await import(pathToFileURL(process.argv[1]).href);const s=m.loadSystem();console.log(JSON.stringify({dataRoot:s.dataRoot,socket:readFileSync(process.argv[2],"utf8").includes("MOSAIC_TESTER_SOCKET_V1")}));'
+tester_facts() {
+    local LC_ALL=C pattern='^\{"dataRoot":"([A-Za-z0-9/._@+-]+)","socket":(true|false)\}$'
+    [[ "$1" =~ $pattern ]] || return 1
+    TS_DATA="${BASH_REMATCH[1]}" TS_MARKED="${BASH_REMATCH[2]}"
+}
+tester_location() {
+    local LC_ALL=C data="$1" home="$2" uid="$3" prefix="$4" part at="" st
+    TS_REASON="" TS_SOCKET=""
+    case "$data" in /*) ;; *) TS_REASON=not-absolute; return 1 ;; esac
+    case "$data" in *[!A-Za-z0-9/._@+-]*) TS_REASON=not-ascii; return 1 ;; esac
+    case "$data/" in */./*|*/../*|*//* ) TS_REASON=not-normalized; return 1 ;; esac
+    [ "${data%/}" = "$data" ] || { TS_REASON=not-normalized; return 1; }
+    case "$data" in "$home"/*) ;; *) TS_REASON=outside-home; return 1 ;; esac
+    case "$home/" in /home/*|/root/*|/run/user/*|/tmp/*|/var/tmp/*) TS_REASON=protected-private-home; return 1 ;; esac
+    TS_SOCKET="$data/console/tester.sock"
+    [ "${#TS_SOCKET}" -le 107 ] || { TS_REASON=too-long; return 1; }
+    local -a parts
+    IFS=/ read -r -a parts <<< "$data"
+    for part in "${parts[@]}"; do
+        [ -n "$part" ] || continue
+        at="$at/$part"
+        [ ! -L "$prefix$at" ] || { TS_REASON=symlink-component; return 1; }
+        if [ -e "$prefix$at" ]; then
+            [ -d "$prefix$at" ] || { TS_REASON=component-type; return 1; }
+        fi
+    done
+    local parent="$prefix$data/console"
+    [ ! -L "$parent" ] || { TS_REASON=symlink-parent; return 1; }
+    if [ -e "$parent" ]; then
+        [ -d "$parent" ] || { TS_REASON=parent-type; return 1; }
+        st="$(stat -c '%u %a' -- "$parent")" || { TS_REASON=parent-stat; return 1; }
+        [ "${st% *}" = "$uid" ] || { TS_REASON=parent-owner; return 1; }
+        [[ "${st#* }" =~ ^[0-7]{3,4}$ ]] && (( (8#${st#* } & 8#077) == 0 )) || { TS_REASON=parent-mode; return 1; }
+    fi
+}
+# tester-location-end
+
+# The serve flags, checked as scripts/webui-service.sh serve_flags checks
+# them (:201-264), and kept in the order given. That script compares the
+# proof file's owner to `id -u`, which is root here, so this copy has its own.
+serve_flags() {
+    local -A seen=()
+    local flags='' name value
+    local port='' public_host='' auth_header='' allow_user='' proof_header='' proof_file='' tester_socket=0
+    local i=0 n=${#SERVE[@]}
+    while [ "$i" -lt "$n" ]; do
+        name="${SERVE[$i]}"
+        case "$name" in
+            --tester-port) die "case2-unit.sh retires tester TCP; use --tester-socket" ;;
+            --tester-socket) [ "$PROFILE" = factory ] || die "the library profile refuses --tester-socket" ;;
+            --checkout) die "refusing --checkout: Case 2 has no queue panel" ;;
+            --board) die "refusing --board: Case 2 runs no control board" ;;
+            --sso) die "refusing --sso: the Console signs people in through the proxy, with the preview set and the proof pair (Q175 phase 2 is a follow-up)" ;;
+            --port|--business) ;;
+            --public-host|--auth-header|--allow-user|--proof-header|--proof-file|--send)
+                [ "$PROFILE" = library ] || die "the factory profile refuses $name: its host has no proxy" ;;
+            *) die "unknown serve flag: $name" ;;
+        esac
+        [ -z "${seen[$name]:-}" ] || die "serve flag $name given twice"
+        seen[$name]=1
+        if [ "$name" = --tester-socket ]; then tester_socket=1; flags="$flags --tester-socket"; i=$((i + 1)); continue; fi
+        if [ "$name" = --send ]; then flags="$flags --send"; i=$((i + 1)); continue; fi
+        [ $((i + 1)) -lt "$n" ] || die "serve flag $name needs a value"
+        value="${SERVE[$((i + 1))]}"
+        case "$name" in
+            --port) port="$value"
+                [[ "$port" =~ ^[1-9][0-9]{0,3}$ ]] && [ "$port" -le 1023 ] || die "--port must be 1..1023, so only the unit's capability can bind it: $port" ;;
+            --business) [ "$value" = "$BUSINESS" ] || die "serve --business $value is not the unit's business $BUSINESS" ;;
+            --public-host) public_host="$value"
+                case "$value" in [A-Za-z0-9]*) ;; *) die "public host must be a hostname, no port or scheme: $value" ;; esac
+                case "$value" in *[!A-Za-z0-9.-]*) die "public host must be a hostname, no port or scheme: $value" ;; esac ;;
+            --auth-header) auth_header="$value"
+                case "$value" in [A-Za-z0-9]*) ;; *) die "auth header must be a header name: $value" ;; esac
+                case "$value" in *[!A-Za-z0-9-]*) die "auth header must be a header name: $value" ;; esac ;;
+            --allow-user) allow_user="$value"
+                case "$value" in [A-Za-z0-9]*) ;; *) die "allowed user must start with a letter or digit: $value" ;; esac
+                case "$value" in *[!A-Za-z0-9._@+-]*) die "allowed user contains a character the unit cannot carry: $value" ;; esac ;;
+            --proof-header) proof_header="$value"
+                [[ "$value" =~ ^[A-Za-z0-9][A-Za-z0-9-]{0,63}$ ]] || die "invalid proxy proof header" ;;
+            --proof-file) proof_file="$value" ;;
+        esac
+        flags="$flags $name $value"
+        i=$((i + 2))
+    done
+    local required=(--port --business)
+    [ "$PROFILE" = factory ] || required+=(--public-host --auth-header --allow-user --send --proof-header --proof-file)
+    for name in "${required[@]}"; do
+        [ -n "${seen[$name]:-}" ] || die "serve flag $name is required"
+    done
+    if [ "$PROFILE" = factory ]; then
+        if [ "$tester_socket" = 1 ]; then
+            local query
+            query="$(tester_capture 5 7 4096 "$USER_NAME" "$HOME_DIR" "$UNIT_PATH" "$NODE" --input-type=module -e "$TESTER_QUERY" "$COPY/packages/cli/src/config.mjs" "$COPY/packages/webui/src/cli.mjs")" || die "tester config query $(tester_capture_reason "$?")"
+            tester_facts "$query" || die "tester config query has invalid facts"
+            [ "$TS_MARKED" = true ] || die "the target does not support --tester-socket"
+            tester_location "$TS_DATA" "$HOME_DIR" "$USER_UID" "" || die "tester path refuses $TS_REASON"
+        fi
+        echo "${flags# }"; return 0
+    fi
+    # Lead decision 101: the uid header carries the Authentik uid.
+    if [ "${auth_header,,}" = x-authentik-uid ] && ! [[ "$allow_user" =~ ^[0-9a-f]{64}$ ]]; then
+        die "with --auth-header $auth_header the allowed user must be an Authentik uid, 64 lower-case hex characters (lead decision 101): $allow_user"
+    fi
+    case "${proof_header,,}" in host|origin|x-mosaic-tester|"${auth_header,,}") die "proxy proof header must differ from Host, Origin, tester and auth headers" ;; esac
+    # The proof file: metadata only, never opened (design 9.3).
+    local secrets="$HOME_DIR/.config/mosaic-dev/secrets" real owner mode
+    abs_plain "$proof_file" 'proxy proof file'
+    [ ! -L "$proof_file" ] || die "proxy proof file must not be a symlink: $proof_file"
+    [ -f "$proof_file" ] || die "proxy proof file must be a regular file: $proof_file"
+    real="$(realpath -e -- "$proof_file")" || die "cannot resolve proxy proof file: $proof_file"
+    [ "$real" = "$proof_file" ] || die "proxy proof file path must have no symlink in it: $proof_file"
+    case "$proof_file" in "$secrets"/*) ;; *) die "proxy proof file must be under $secrets, outside the data root: $proof_file" ;; esac
+    owner="$(stat -c '%u' -- "$proof_file")" || die "cannot stat proxy proof file"
+    mode="$(stat -c '%a' -- "$proof_file")" || die "cannot stat proxy proof file"
+    [ "$owner" = "$USER_UID" ] || die "proxy proof file must be owned by $USER_NAME (uid $USER_UID): $proof_file"
+    [ "$mode" = 600 ] || [ "$mode" = 400 ] || die "proxy proof file must be mode 0600 or 0400, not $mode: $proof_file"
+    echo "${flags# }"
+}
+# PATH: the node's directory first, then the default list without it. Unlike
+# scripts/webui-service.sh:303-305 this always puts node's directory first,
+# so the bus's `exec node` (scripts/mosaic) finds the same node.
+NODE_DIR="$(dirname -- "$NODE")"
+UNIT_PATH="$NODE_DIR"
+for d in /usr/local/bin /usr/bin /bin; do [ "$d" = "$NODE_DIR" ] || UNIT_PATH="$UNIT_PATH:$d"; done
+FLAGS="$(serve_flags)" || exit 1
+
+HARDENING="ProtectSystem=strict
+ReadWritePaths=$HOME_DIR
+ProtectHome=yes
+PrivateTmp=yes"
+CAPS="AmbientCapabilities=CAP_NET_BIND_SERVICE
+CapabilityBoundingSet=CAP_NET_BIND_SERVICE"
+# The default instance, as scripts/instance.sh:85-107 renders it: no
+# MOSAIC_CONFIG line, and the session env under %h, which becomes <home>.
+SESSION_ENV='%h/.config/mosaic-dev/secrets/claude-session.env'
+ENV_FILE="-$HOME_DIR/.config/mosaic-dev/secrets/claude-session.env"
+PM_FLAGS=''
+[ "$PM" = 0 ] || PM_FLAGS=' --pm'
+CLAUDE_ENV=''
+[ "$CLAUDE_SET" = 0 ] || CLAUDE_ENV="Environment=MOSAIC_CLAUDE_BIN=$CLAUDE"
+
+# One unit from its template. kind is bus or webui.
+render() {
+    local kind="$1" template="$2" text tokens
+    [ -f "$template" ] && [ ! -L "$template" ] || die "template missing or not a regular file: $template"
+    text="$(sed -e "s|@REPO@|$COPY|g" -e "s|@PATH@|$UNIT_PATH|g" -e "s|@NODE@|$NODE|g" \
+        -e "s|@PM_FLAGS@|$PM_FLAGS|g" -e "s|^@CLAUDE_ENV@\$|$CLAUDE_ENV|" \
+        -e '/^@CONFIG_ENV@$/d' -e "s|@SESSION_ENV@|$SESSION_ENV|g" \
+        -e "s|%h|$HOME_DIR|g" -- "$template")"
+    # Checked before @FLAGS@ goes in, since an allowed user may hold @.
+    tokens="$(printf '%s\n' "$text" | grep -oE '@[A-Z_]+@' || true)"
+    if [ "$kind" = webui ]; then
+        [ "$tokens" = @FLAGS@ ] || die "$template: a token other than one @FLAGS@ is left after the render: $(echo $tokens)"
+        text="${text//@FLAGS@/$FLAGS}"
+    else
+        [ -z "$tokens" ] || die "$template: a token is left after the render: $(echo $tokens)"
+    fi
+    if printf '%s\n' "$text" | grep -q '%h'; then die "$template: %h is left after the render"; fi
+    local add="User=$USER_NAME\nGroup=$GROUP\n${HARDENING//$'\n'/\\n}\n"
+    [ "$kind" = bus ] || add="$add${CAPS//$'\n'/\\n}\n"
+    # The added lines go at the end of [Service], before its trailing blank
+    # lines. In [Install], WantedBy=multi-user.target replaces
+    # WantedBy=default.target in both units, so both start at boot (Q189).
+    printf '%s\n' "$text" | awk -v add="$add" '
+        function blanks_out() { for (; blanks > 0; blanks--) print "" }
+        /^\[.*\]$/ {
+            if (sec == "[Service]") printf "%s", add
+            sec = $0
+            blanks_out(); print; next
+        }
+        $0 == "" { blanks++; next }
+        { blanks_out() }
+        sec == "[Install]" && $0 == "WantedBy=default.target" { $0 = "WantedBy=multi-user.target" }
+        { print }
+        END { if (sec == "[Service]") printf "%s", add; blanks_out() }'
+}
+
+# The unit's settings as section<TAB>key<TAB>value, one per line, keys
+# trimmed as systemd trims them. A continued line refuses, so no setting
+# hides in one.
+settings() {
+    awk '
+        { sub(/^[ \t]+/, ""); sub(/[ \t]+$/, "") }
+        $0 == "" || /^[#;]/ { next }
+        /\\$/ { print "CONTINUED"; exit }
+        /^\[.*\]$/ { sec = $0; next }
+        {
+            i = index($0, "="); if (i == 0) { print "NOKEY\t" $0; next }
+            k = substr($0, 1, i - 1); v = substr($0, i + 1)
+            sub(/[ \t]+$/, "", k); sub(/^[ \t]+/, "", v)
+            print sec "\t" k "\t" v
+        }'
+}
+
+# Refuses unless one unit's fixed lines hold. what names the unit in messages,
+# copy is the copy directory it should run from.
+check_unit() {
+    local kind="$1" text="$2" what="$3" copy="$4" s
+    s="$(printf '%s\n' "$text" | settings)"
+    ! printf '%s\n' "$s" | grep -qx CONTINUED || die "$what: a line continues onto the next"
+    ! printf '%s\n' "$s" | grep -q '^NOKEY' || die "$what: a line is neither a section, a comment nor a setting"
+    # %h in a system unit is root's home, not <user>'s.
+    ! printf '%s\n' "$text" | grep -q '%h' || die "$what: %h is left; a system unit reads it as root's home"
+    local key
+    for key in RestrictNamespaces PrivateUsers SystemCallFilter PermissionsStartOnly; do
+        ! printf '%s\n' "$s" | awk -F'\t' -v k="$key" '$2 == k { found = 1 } END { exit !found }' \
+            || die "$what: refusing $key=, which the hub's units must not hold"
+    done
+    # An Exec*= value whose leading prefix characters hold + or ! runs with
+    # full privileges, whatever User= says.
+    local bad
+    bad="$(printf '%s\n' "$s" | awk -F'\t' '$2 ~ /^Exec/ { p = $3; sub(/[^-@:+!].*$/, "", p); if (p ~ /[+!]/) print $2 "=" $3 }')"
+    [ -z "$bad" ] || die "$what: refusing an Exec line that runs with full privileges: $bad"
+    # The fixed lines, each exactly once, in [Service].
+    one() {
+        local k="$1" v="$2" got
+        got="$(printf '%s\n' "$s" | awk -F'\t' -v k="$k" '$2 == k { print $1 "\t" $3 }')"
+        [ "$got" = "[Service]	$v" ] || die "$what: $k= must be exactly once in [Service], as $k=$v"
+    }
+    none() {
+        ! printf '%s\n' "$s" | awk -F'\t' -v k="$1" '$2 == k { found = 1 } END { exit !found }' || die "$what: refusing $1=, which this unit must not hold"
+    }
+    one User "$USER_NAME"
+    one Group "$GROUP"
+    one WorkingDirectory "$copy"
+    # Environment= lines: PATH, and MOSAIC_CLAUDE_BIN only with --claude.
+    local envs want_envs="[Service]	PATH=$UNIT_PATH"
+    [ "$kind" = webui ] || [ -z "$CLAUDE_ENV" ] || want_envs="$want_envs
+[Service]	MOSAIC_CLAUDE_BIN=$CLAUDE"
+    envs="$(printf '%s\n' "$s" | awk -F'\t' '$2 == "Environment" { print $1 "\t" $3 }')"
+    [ "$envs" = "$want_envs" ] || die "$what: the Environment= lines must be exactly: $(printf '%s' "$want_envs" | cut -f2 | tr '\n' ' ')"
+    one NoNewPrivileges yes
+    one ProtectSystem strict
+    one ReadWritePaths "$HOME_DIR"
+    one ProtectHome yes
+    one PrivateTmp yes
+    local order
+    order="$(printf '%s\n' "$s" | awk -F'\t' '$2 ~ /^(ProtectSystem|ReadWritePaths|ProtectHome|PrivateTmp)$/ { printf "%s ", $2 }')"
+    [ "$order" = "ProtectSystem ReadWritePaths ProtectHome PrivateTmp " ] || die "$what: the hardening lines must be in the order ProtectSystem, ReadWritePaths, ProtectHome, PrivateTmp"
+    local wanted
+    wanted="$(printf '%s\n' "$s" | awk -F'\t' '$2 == "WantedBy" { print $1 "\t" $3 }')"
+    [ "$wanted" = "[Install]	multi-user.target" ] || die "$what: WantedBy= must be exactly once, as WantedBy=multi-user.target"
+    if [ "$kind" = bus ]; then
+        one ExecStart "$copy/scripts/mosaic bus start %i$PM_FLAGS"
+        one EnvironmentFile "$ENV_FILE"
+        none AmbientCapabilities
+        none CapabilityBoundingSet
+    else
+        one ExecStart "$NODE $copy/packages/webui/src/cli.mjs serve $FLAGS"
+        none EnvironmentFile
+        one AmbientCapabilities CAP_NET_BIND_SERVICE
+        one CapabilityBoundingSet CAP_NET_BIND_SERVICE
+    fi
+}
+
+BUS_TEXT="$(render bus "$BUS_TEMPLATE")" || exit 1
+WEBUI_TEXT="$(render webui "$WEBUI_TEMPLATE")" || exit 1
+check_unit bus "$BUS_TEXT" "rendered $BUS_UNIT" "$COPY"
+check_unit webui "$WEBUI_TEXT" "rendered $WEBUI_UNIT" "$COPY"
+
+# A re-install: each installed unit passes the same checks, both name one
+# copy, and each equals the render once its copy id is the new one.
+[ -d "$UNIT_DIR" ] && [ ! -L "$UNIT_DIR" ] || die "no unit directory $UNIT_DIR"
+installed_ids=''
+for pair in "bus:$BUS_UNIT:BUS_TEXT" "webui:$WEBUI_UNIT:WEBUI_TEXT"; do
+    IFS=: read -r kind name var <<<"$pair"
+    path="$UNIT_DIR/$name"
+    [ ! -L "$path" ] || die "refusing: $path is a symlink"
+    [ -e "$path" ] || continue
+    [ -f "$path" ] || die "refusing: $path is not a regular file"
+    text="$(cat -- "$path")"
+    old="$(printf '%s\n' "$text" | settings | awk -F'\t' -v c="$COPIES/" '$2 == "WorkingDirectory" && index($3, c) == 1 { print substr($3, length(c) + 1) }')"
+    [[ "$old" =~ ^[0-9a-f]{40}$ ]] || die "installed $path names no copy under $COPIES"
+    check_unit "$kind" "$text" "installed $path" "$COPIES/$old"
+    [ "$text" = "$(printf '%s\n' "${!var}" | sed "s|$COPY|$COPIES/$old|g")" ] \
+        || die "installed $path differs from the render in more than the copy id; the node path, serve flags, --pm and --claude must equal the installed ones"
+    installed_ids="$installed_ids $old"
+done
+read -r -a ids <<<"$installed_ids"
+[ "${#ids[@]}" -lt 2 ] || [ "${ids[0]}" = "${ids[1]}" ] || die "the installed units name different copies, ${ids[0]} and ${ids[1]}"
+
+# `systemctl start` leaves a running unit on the copy it started from, so
+# note which units run before the write (row 195 owns the restart).
+BUS_NAME="mosaic-bus@$BUSINESS.service"
+running=''
+for name in "$BUS_NAME" "$WEBUI_UNIT"; do
+    if "$SYSTEMCTL" is-active --quiet "$name"; then running="$running $name"; fi
+done
+
+# Write each unit to a temp file in the unit directory, then rename.
+write_unit() {
+    local name="$1" text="$2" tmp
+    tmp="$(mktemp "$UNIT_DIR/.case2-unit.XXXXXX")"
+    printf '%s\n' "$text" >"$tmp"
+    chmod 0644 "$tmp"
+    [ "$(id -u)" != 0 ] || chown root:root "$tmp"
+    mv -fT -- "$tmp" "$UNIT_DIR/$name"
+}
+write_unit "$BUS_UNIT" "$BUS_TEXT"
+write_unit "$WEBUI_UNIT" "$WEBUI_TEXT"
+# Enable both, then start the bus, then the Console (design 10 step 2c).
+# serve calls the bus per request, so the units carry no After= or Wants=.
+"$SYSTEMCTL" daemon-reload || die "systemctl daemon-reload failed; the units are written, nothing is enabled or started"
+"$SYSTEMCTL" enable "$BUS_NAME" "$WEBUI_UNIT" || die "systemctl enable $BUS_NAME $WEBUI_UNIT failed; nothing is started"
+"$SYSTEMCTL" start "$BUS_NAME" || die "systemctl start $BUS_NAME failed; the Console is not started"
+"$SYSTEMCTL" start "$WEBUI_UNIT" || die "systemctl start $WEBUI_UNIT failed; the bus is running"
+if [ -z "$running" ]; then
+    echo "case2-unit: wrote $UNIT_DIR/$BUS_UNIT and $UNIT_DIR/$WEBUI_UNIT from copy $COPY_ID; enabled and started $BUS_NAME, then $WEBUI_UNIT"
+    exit 0
+fi
+echo "case2-unit: wrote $UNIT_DIR/$BUS_UNIT and $UNIT_DIR/$WEBUI_UNIT from copy $COPY_ID and enabled both"
+for name in "$BUS_NAME" "$WEBUI_UNIT"; do
+    case " $running " in
+        *" $name "*) echo "case2-unit: $name was already running, so it is still on ${ids[0]:+copy }${ids[0]:-the copy it started from}, not copy $COPY_ID" ;;
+        *) echo "case2-unit: started $name on copy $COPY_ID" ;;
+    esac
+done
+echo "case2-unit: restart $BUS_NAME and $WEBUI_UNIT together to put both on copy $COPY_ID; until then they may run different copies"
@@ -0,0 +1,872 @@
+// Case 2 row C2-13a (#1732): scripts/case2-unit.sh renders and installs the hub's two system units,
+// and scripts/case2-precheck.sh checks the host before they start. Brief: docs/plans/2026-10-20_case2-rows.md
+// "C2-13a". Every case runs against a scratch unit directory, a scratch home and fake systemctl,
+// getent, sudo, id, node, bwrap and claude. Nothing here reads or writes /etc/systemd,
+// ~/.mosaic-dev or ~/.config/mosaic-dev, and no fixture value is a real credential.
+import { test } from "node:test";
+import assert from "node:assert/strict";
+import { spawnSync } from "node:child_process";
+import { createServer } from "node:net";
+import { chmodSync, existsSync, mkdirSync, readdirSync, readFileSync, realpathSync, rmSync, statSync, symlinkSync, writeFileSync } from "node:fs";
+import { dirname, join } from "node:path";
+import { fileURLToPath } from "node:url";
+import { businessDoc, writeJson } from "../../business/tests/helpers.mjs";
+import { binds, prepareRun, sandboxArgv, sandboxProblem } from "../../seat/src/sandbox.mjs";
+import { tmp } from "./helpers.mjs";
+import { CASE_SUDO_SESSION, recordedLivePids, killRecordedPids, fixtureGuard, cleanupFixture, pollFixtureGone, blockingQuerySource } from "./case-sudo-fixture.mjs";
+
+const REPO = fileURLToPath(new URL("../../../", import.meta.url));
+const UNIT = join(REPO, "scripts", "case2-unit.sh");
+const PRECHECK = join(REPO, "scripts", "case2-precheck.sh");
+const BUS_TEMPLATE = join(REPO, "packages", "cli", "systemd", "mosaic-bus.service.in");
+const WEBUI_TEMPLATE = join(REPO, "packages", "webui", "systemd", "mosaic-webui.service.in");
+const COPY_A = "a".repeat(40);
+const COPY_B = "b".repeat(40);
+const UID = process.getuid();
+const GID = process.getgid();
+// A made-up key value; no output may hold it.
+const FIXTURE_KEY = "fixture-zai-key-3c9e51";
+
+// A root-owned executable outside /usr/local/bin, /usr/bin and /bin, for the PATH case.
+function outsideNode() {
+  const dir = "/usr/lib/systemd";
+  for (const name of readdirSync(dir).sort()) {
+    const p = join(dir, name);
+    const s = statSync(p, { throwIfNoEntry: false });
+    if (s?.isFile() && s.uid === 0 && (s.mode & 0o111) && (s.mode & 0o022) === 0 && realpathSync(p) === p) return p;
+  }
+  throw new Error(`no root-owned executable in ${dir}`);
+}
+const USR_NODE = realpathSync("/usr/bin/node");
+const TRUE_BIN = realpathSync("/usr/bin/true");
+
+function script(file, text) {
+  mkdirSync(dirname(file), { recursive: true });
+  writeFileSync(file, `#!/usr/bin/env bash\n${text}\n`);
+  chmodSync(file, 0o755);
+  return file;
+}
+
+// A scratch hub: a home with two copies and a proof file, a unit directory, and fakes.
+function hub(t, { uid = UID } = {}) {
+  const root = tmp(t, "case2-unit-");
+  const home = join(root, "home", "mosaic");
+  for (const id of [COPY_A, COPY_B]) {
+    mkdirSync(join(home, ".local", "share", "mosaic-stack", "copies", id, "scripts"), { recursive: true });
+    writeFileSync(join(home, ".local", "share", "mosaic-stack", "copies", id, "scripts", "mosaic"), "");
+  }
+  const secrets = join(home, ".config", "mosaic-dev", "secrets");
+  mkdirSync(secrets, { recursive: true, mode: 0o700 });
+  const proof = join(secrets, "proxy-proof");
+  writeFileSync(proof, "made-up-proof\n");
+  chmodSync(proof, 0o600);
+  const units = join(root, "units");
+  mkdirSync(units);
+  const bin = join(root, "bin");
+  const log = join(root, "systemctl.log");
+  script(join(bin, "getent"), `case "$1" in
+  passwd) [ "$2" = mosaic ] && echo "mosaic:x:${uid}:${GID}::${home}:/bin/bash" ;;
+  group) [ "$2" = "${GID}" ] && echo "mosaic:x:${GID}:" ;;
+  *) exit 2 ;;
+esac`);
+  // is-active answers yes for each unit named in CASE2_TEST_ACTIVE.
+  script(join(bin, "systemctl"), `echo "$*" >>'${log}'
+if [ "$1" = is-active ]; then case " \${CASE2_TEST_ACTIVE:-} " in *" $3 "*) exit 0 ;; *) exit 3 ;; esac; fi
+[ "$*" != "\${CASE2_TEST_FAIL:-}" ]`);
+  const dataRoot = join(home, '.mosaic-dev'), query = join(root, 'query.json'), sudoLog = join(root, 'sudo.log');
+  mkdirSync(dataRoot, { recursive: true });
+  writeJson(query, { dataRoot });
+  for (const copy of [COPY_A, COPY_B]) {
+    const src = join(home, '.local/share/mosaic-stack/copies', copy, 'packages');
+    mkdirSync(join(src, 'cli/src'), { recursive: true }); mkdirSync(join(src, 'webui/src'), { recursive: true });
+    writeFileSync(join(src, 'cli/src/config.mjs'), `import fs from 'node:fs';export const loadSystem=()=>JSON.parse(fs.readFileSync(${JSON.stringify(query)},'utf8'));`);
+    writeFileSync(join(src, 'webui/src/cli.mjs'), '// MOSAIC_TESTER_SOCKET_V1\n');
+  }
+  script(join(bin, 'sudo'), `${CASE_SUDO_SESSION}
+echo "$*" >>'${sudoLog}'
+[ "$1" = -u ] && [ "$2" = mosaic ] && [ "$3" = -H ] || exit 97
+shift 3
+[ "$1" = env ] && [ "$2" = -i ] && [ "$3" = 'HOME=${home}' ] || exit 98
+if [ -f '${root}/query-hang' ]; then
+ trap '' TERM
+ (trap '' TERM; echo "$BASHPID" >>'${root}/query-pids'; exec sleep 60) &
+ echo "$BASHPID" >>'${root}/query-pids'; wait; exit
+fi
+if [ -f '${root}/query-orphan' ]; then
+ (trap '' TERM; here="$BASHPID"; read -r sid < <(/bin/ps -o sid= -p "$here"); printf '%s %s\\n' "$here" "$sid" >'${root}/query-owned'; exec sleep 60) </dev/null >/dev/null 2>&1 &
+ echo "$!" >'${root}/query-pids'
+ cat '${root}/query-output'; exit 0
+fi
+if [ -f '${root}/query-output' ]; then cat '${root}/query-output'; exit "$(cat '${root}/query-status')"; fi
+case_sudo_run '${root}' "$@"`);
+  return { root, home, secrets, proof, units, bin, log, dataRoot, query, sudoLog };
+}
+
+const libraryFlags = (h) => ["--port", "443", "--business", "acme", "--public-host", "books.example", "--auth-header", "X-Auth-User",
+  "--allow-user", "melanie", "--send", "--proof-header", "X-Proxy-Proof", "--proof-file", h.proof];
+const factoryFlags = () => ["--port", "443", "--business", "acme", "--tester-socket"];
+
+function unit(h, { profile = "library", node = USR_NODE, copy = COPY_A, extra = [], flags, env = {} } = {}) {
+  const serve = flags ?? (profile === "factory" ? factoryFlags() : libraryFlags(h));
+  const args = ["--user", "mosaic", "--home", h.home, "--business", "acme", "--copy", copy, "--node", node, "--profile", profile, ...extra, "--", ...serve];
+  const r = spawnSync(UNIT, args, {
+    encoding: "utf8",
+    timeout: 30000,
+    env: { PATH: `${h.bin}:${process.env.PATH}`, CASE2_UNIT_DIR: h.units, CASE2_SYSTEMCTL: join(h.bin, "systemctl"), CASE2_GETENT: join(h.bin, "getent"), ...env },
+  });
+  return { code: r.status, out: r.stdout, err: r.stderr };
+}
+
+const busFile = (h) => join(h.units, "[email protected]");
+const webuiFile = (h) => join(h.units, "mosaic-webui.service");
+const read = (f) => readFileSync(f, "utf8");
+const lines = (text, key) => text.split("\n").filter((l) => l.startsWith(`${key}=`)).map((l) => l.slice(key.length + 1));
+const copyDir = (h, id = COPY_A) => join(h.home, ".local", "share", "mosaic-stack", "copies", id);
+const HARDENING = (h) => ["ProtectSystem=strict", `ReadWritePaths=${h.home}`, "ProtectHome=yes", "PrivateTmp=yes"];
+
+test('row253 factory socket uses actual config and target-uid query without widening hardening', t=>{
+ const h=hub(t),custom=join(h.home,'custom');mkdirSync(custom);writeJson(h.query,{dataRoot:custom});
+ const r=unit(h,{profile:'factory'});assert.equal(r.code,0,r.out+r.err);
+ assert.deepEqual(lines(read(webuiFile(h)),'ExecStart'),[`${USR_NODE} ${copyDir(h)}/packages/webui/src/cli.mjs serve ${factoryFlags().join(' ')}`]);
+ assert.deepEqual(read(webuiFile(h)).split('\n').filter(l=>/^(ProtectSystem|ReadWritePaths|ProtectHome|PrivateTmp)=/.test(l)),HARDENING(h));
+ assert.match(read(h.sudoLog),new RegExp(`^-u mosaic -H env -i HOME=${h.home} PATH=`, 'm'));
+ assert.equal(existsSync(join(custom,'console')),false,'installer never creates the socket parent');
+});
+
+test('row253 installer refuses unsafe location and query facts before unit writes',t=>{
+ const cases=[
+  ['sibling prefix',h=>writeJson(h.query,{dataRoot:h.home+'2/data'}),/outside.*home/],
+  ['dot',h=>writeJson(h.query,{dataRoot:h.home+'/./data'}),/normalized/],
+  ['dotdot',h=>writeJson(h.query,{dataRoot:h.home+'/x/../data'}),/normalized/],
+  ['double slash',h=>writeJson(h.query,{dataRoot:h.home+'//data'}),/normalized/],
+  ['trailing slash',h=>writeJson(h.query,{dataRoot:h.home+'/data/'}),/normalized/],
+  ['newline',h=>writeJson(h.query,{dataRoot:h.home+'/x\nP10 forged closed'}),/query/],
+  ['non ASCII',h=>writeJson(h.query,{dataRoot:h.home+'/é'}),/query/],
+  ['middle symlink',h=>{symlinkSync(h.dataRoot,join(h.home,'link'));writeJson(h.query,{dataRoot:join(h.home,'link','nested')});},/symlink/],
+  ['long path',h=>writeJson(h.query,{dataRoot:join(h.home,'a'.repeat(108))}),/too.long/],
+  ['parent file',h=>writeFileSync(join(h.dataRoot,'console'),'x',{mode:0o600}),/parent-type/],
+  ['parent symlink',h=>symlinkSync(h.home,join(h.dataRoot,'console')),/symlink/],
+  ['parent mode',h=>{mkdirSync(join(h.dataRoot,'console'));chmodSync(join(h.dataRoot,'console'),0o755);},/parent/],
+  ['foreign parent',h=>{mkdirSync(join(h.dataRoot,'console'),{mode:0o700});},/parent/],
+  ['unsupported',h=>writeFileSync(join(copyDir(h),'packages/webui/src/cli.mjs'),'// old copy'),/support/],
+  ['schema',h=>{writeFileSync(join(h.root,'query-output'),JSON.stringify({dataRoot:h.dataRoot,socket:true,extra:true}));writeFileSync(join(h.root,'query-status'),'0');},/query/],
+  ['wrong type',h=>{writeFileSync(join(h.root,'query-output'),JSON.stringify({dataRoot:h.dataRoot,socket:'true'}));writeFileSync(join(h.root,'query-status'),'0');},/query/],
+  ['noisy query',h=>{writeFileSync(join(h.root,'query-output'),'noise\n'+JSON.stringify({dataRoot:h.dataRoot,socket:true}));writeFileSync(join(h.root,'query-status'),'0');},/query/],
+  ['failed valid query',h=>{writeFileSync(join(h.root,'query-output'),JSON.stringify({dataRoot:h.dataRoot,socket:true}));writeFileSync(join(h.root,'query-status'),'1');},/query/],
+ ];
+ for(const [name,change,why] of cases){
+  const h=hub(t,{uid:name==='foreign parent'?UID+4242:UID});change(h);
+  const r=unit(h,{profile:'factory'});refuses(r,why);
+  assert.equal(existsSync(busFile(h)),false,name);assert.equal(existsSync(webuiFile(h)),false,name);assert.equal(existsSync(h.log),false,name);
+  assert.equal((r.out+r.err).includes('P10 forged closed'),false,name);
+ }
+});
+
+test('row253 query timeout kills its process group and leaves no running child',async t=>{
+ const h=hub(t);writeFileSync(join(h.root,'query-hang'),'');
+ const r=unit(h,{profile:'factory'});refuses(r,/query/);
+ const pids=read(join(h.root,'query-pids')).trim().split('\n').map(Number);assert.ok(pids.length>=2);
+ for(const pid of pids){
+  let state='gone';
+  for(let n=0;n<50;n++){
+   try{state=read(`/proc/${pid}/stat`).split(') ')[1].split(' ')[0];}catch{state='gone';}
+   if(state==='gone'||state==='Z')break;
+   await new Promise(resolve=>setTimeout(resolve,10));
+  }
+  assert.ok(state==='gone'||state==='Z',`query descendant ${pid} still ${state}`);
+ }
+ assert.equal(existsSync(h.log),false);assert.equal(existsSync(busFile(h)),false);
+});
+
+test('row253 protected homes refuse before any filesystem access',()=>{
+ const source=read(UNIT), body=source.slice(source.indexOf('tester_location() {'),source.indexOf('# tester-location-end'));
+ for(const home of ['/home/mosaic','/root/mosaic','/run/user/997','/tmp/mosaic','/var/tmp/mosaic']){
+  const r=spawnSync('/bin/bash',['-c',body+'\nif tester_location "$1/data" "$1" 997 ""; then exit 99; fi; printf "%s" "$TS_REASON"','--',home],{encoding:'utf8'});
+  assert.equal(r.status,0);assert.equal(r.stdout,'protected-private-home');
+ }
+});
+
+// C4 cases run through both sudo process models. Exec shares the runner's
+// session, so its session-wide check would be vacuous; exact recorded PIDs
+// are checked in both modes. Hop additionally isolates the fake session.
+for(const kind of ['sleep','signals','member']) test(`row253 C4 ${kind} query has exact inner reason and cleans all members`,async t=>{
+ for(const mode of ['exec','hop']){
+  const h=hub(t),sessions=join(h.root,'session-pids'),queries=join(h.root,'query-pids'),files=[sessions,queries];
+  writeFileSync(join(h.root,'session-mode'),mode);
+  const member=join(h.root,'q ) '+String.fromCharCode(10)+'mem'),proof=join(h.root,'comm-proof');
+  if(kind==='member')symlinkSync('/usr/bin/sleep',member);
+  writeFileSync(join(copyDir(h),'packages/cli/src/config.mjs'),blockingQuerySource(queries,kind,member,proof));
+  const capture=cleanupFixture(t,files);const stopGuard=fixtureGuard(t,files);
+  const start=performance.now(),r=unit(h,{profile:'factory'}),seconds=(performance.now()-start)/1000;capture();
+  refuses(r,/^case2-unit: tester config query inner-timeout\n$/);
+  assert.ok(seconds<7,`${kind}/${mode}: ${seconds}s exceeds outer bound`);
+  assert.deepEqual(await pollFixtureGone(files),[],mode);
+  if(kind==='member')assert.ok(read(proof).includes('('+member.split('/').at(-1)+') '),'member comm with newline and closing parenthesis was observed');
+  assert.equal(existsSync(h.log),false,mode);await stopGuard();
+ }
+});
+
+test('row253 C4 overflow is output-limit in both sudo modes',async t=>{
+ for(const mode of ['exec','hop']){
+  const h=hub(t),files=[join(h.root,'session-pids')];writeFileSync(join(h.root,'session-mode'),mode);const capture=cleanupFixture(t,files);
+  writeFileSync(join(copyDir(h),'packages/cli/src/config.mjs'),`process.stdout.write('X'.repeat(8192));export const loadSystem=()=>({dataRoot:${JSON.stringify(h.dataRoot)}});`);
+  const r=unit(h,{profile:'factory'});capture();refuses(r,/^case2-unit: tester config query output-limit\n$/);
+  assert.equal(r.out,'');assert.equal(existsSync(busFile(h)),false);assert.equal(existsSync(h.log),false);
+  assert.deepEqual(await pollFixtureGone(files),[]);
+ }
+});
+
+test('row253 C4 stalled supervisor uses the outer reason and explicit residual cleanup',async t=>{
+ for(const mode of ['exec','hop']){
+  const h=hub(t),file=join(h.root,'session-pids'),files=[file];writeFileSync(join(h.root,'session-mode'),mode);
+  writeFileSync(join(h.root,'stall-config'),'');writeFileSync(join(h.root,'stall-output'),JSON.stringify({dataRoot:h.dataRoot,socket:true}));
+  const capture=cleanupFixture(t,files);const stopGuard=fixtureGuard(t,files);
+  const start=performance.now(),r=unit(h,{profile:'factory'}),seconds=(performance.now()-start)/1000;capture();
+  refuses(r,/^case2-unit: tester config query outer-timeout\n$/);
+  assert.ok(seconds>=7&&seconds<9,`${mode}: ${seconds}s; 2s slack includes root preflight`);
+  assert.equal(r.out,'');assert.equal(existsSync(busFile(h)),false);assert.equal(existsSync(h.log),false);
+  if(mode==='hop')assert.ok(recordedLivePids(file).length>0,'R3 residual exists before fixture cleanup');
+  killRecordedPids(file);assert.deepEqual(await pollFixtureGone(files),[], 'explicit fixture cleanup of R3 residual');await stopGuard();
+ }
+});
+
+test('row253 C4 inline supervisor is byte-identical in both host scripts',()=>{
+ const extract=s=>s.split('# row253-supervisor-begin\n')[1]?.split('# row253-supervisor-end')[0];
+ const a=extract(read(UNIT)),b=extract(read(join(REPO,'scripts/case1-accept.sh')));
+ assert.ok(a?.length>100);assert.equal(a,b);
+});
+
+test('row253 C4 cleanup budget starts after inventory pass one',()=>{
+ // A deterministic clock models a slow inventory without host-load timing.
+ // All process reads and signals are stand-ins; no real PID is signalled.
+ const source=read(UNIT);
+ const body=source.slice(source.indexOf('stat_fields() {'),source.indexOf('finish() {'));
+ const standins=`
+child=424242; sleep_bin=:; seen=0; clocks=0; kills=0
+stat_fields() {
+ seen=$((seen+1)); ST_STATE=R; ST_SESSION=0
+ [ "$seen" != 1 ] || ST_SESSION="$child"
+ return 0
+}
+clock_cs() { clocks=$((clocks+1)); CLOCK_CS=$((clocks*1000)); }
+kill() { kills=$((kills+1)); return 0; }
+clean_session; rc=$?
+printf '%s' "$kills"
+exit "$rc"
+`;
+ const r=spawnSync('/bin/bash',['-c',body+standins],{encoding:'utf8'});
+ assert.equal(r.status,0,r.stderr);assert.equal(r.stdout,'1');
+});
+
+test('row253 query reaps its group even when a child closes stdout before the query returns',async t=>{
+ const h=hub(t);writeFileSync(join(h.root,'query-orphan'),'');
+ writeFileSync(join(h.root,'query-output'),JSON.stringify({dataRoot:h.dataRoot,socket:true}));
+ let pid;
+ const capture=cleanupFixture(t,[join(h.root,'query-owned')]);
+ const r=unit(h,{profile:'factory'});capture();
+ pid=Number(read(join(h.root,'query-pids')).trim());
+ assert.equal(r.code,0,r.out+r.err);
+ let state='gone';
+ for(let n=0;n<50;n++){
+  try{state=read(`/proc/${pid}/stat`).split(') ')[1].split(' ')[0];}catch{state='gone';}
+  if(state==='gone'||state==='Z')break;
+  await new Promise(resolve=>setTimeout(resolve,10));
+ }
+ assert.ok(state==='gone'||state==='Z',`query descendant ${pid} still ${state}`);
+});
+
+test('row253 config parser is strict',()=>{
+ const source=read(UNIT), body=source.slice(source.indexOf('tester_facts() {'),source.indexOf('tester_location() {'));
+ const valid=spawnSync('/bin/bash',['-c',body+'\ntester_facts "$1" && printf "%s %s" "$TS_DATA" "$TS_MARKED"','--','{"dataRoot":"/srv/mosaic/data","socket":true}'],{encoding:'utf8'});
+ assert.equal(valid.status,0);assert.equal(valid.stdout,'/srv/mosaic/data true');
+ const facts=['{"dataRoot":"/srv/mosaic/data","socket":true,"extra":1}','{"dataRoot":4,"socket":true}','{"dataRoot":"/srv/mosaic/data","socket":"true"}','{"dataRoot":"/srv/mosaic/data","socket":true}\nP10 forged closed'];
+ for(const fact of facts){
+  const r=spawnSync('/bin/bash',['-c',body+'\ntester_facts "$1"','--',fact]);
+  assert.notEqual(r.status,0,fact);
+ }
+});
+
+function refuses(r, pattern) {
+  assert.equal(r.code, 1, `expected a refusal, got ${r.code}: ${r.out}${r.err}`);
+  assert.match(r.err, pattern);
+}
+
+// A template copy with one edit, for the template cases.
+function template(h, from, name, edit) {
+  const file = join(h.root, name);
+  writeFileSync(file, edit(read(from)));
+  return file;
+}
+
+test("a clean library render writes both units 0644 with the fixed lines, and enables both then starts the bus then the Console", (t) => {
+  const h = hub(t);
+  const r = unit(h);
+  assert.equal(r.code, 0, r.err);
+  for (const f of [busFile(h), webuiFile(h)]) assert.equal(statSync(f).mode & 0o777, 0o644);
+  const bus = read(busFile(h));
+  const webui = read(webuiFile(h));
+  assert.deepEqual(lines(bus, "Environment"), ["PATH=/usr/bin:/usr/local/bin:/bin"]);
+  assert.deepEqual(lines(bus, "ExecStart"), [`${copyDir(h)}/scripts/mosaic bus start %i`]);
+  assert.deepEqual(lines(bus, "EnvironmentFile"), [`-${h.home}/.config/mosaic-dev/secrets/claude-session.env`]);
+  assert.deepEqual(lines(webui, "ExecStart"), [`${USR_NODE} ${copyDir(h)}/packages/webui/src/cli.mjs serve ${libraryFlags(h).join(" ")}`]);
+  assert.deepEqual(lines(webui, "EnvironmentFile"), []);
+  for (const text of [bus, webui]) {
+    assert.deepEqual(lines(text, "WantedBy"), ["multi-user.target"]);
+    assert.deepEqual(lines(text, "User"), ["mosaic"]);
+    assert.deepEqual(lines(text, "Group"), ["mosaic"]);
+    assert.deepEqual(lines(text, "NoNewPrivileges"), ["yes"]);
+    const hardening = text.split("\n").filter((l) => /^(ProtectSystem|ReadWritePaths|ProtectHome|PrivateTmp)=/.test(l));
+    assert.deepEqual(hardening, HARDENING(h));
+    assert.doesNotMatch(text, /@[A-Z_]+@|%h|MOSAIC_CONFIG=|MOSAIC_CLAUDE_BIN|After=|Wants=/);
+  }
+  assert.deepEqual(lines(bus, "AmbientCapabilities"), []);
+  assert.deepEqual(lines(bus, "CapabilityBoundingSet"), []);
+  assert.deepEqual(lines(webui, "AmbientCapabilities"), ["CAP_NET_BIND_SERVICE"]);
+  assert.deepEqual(lines(webui, "CapabilityBoundingSet"), ["CAP_NET_BIND_SERVICE"]);
+  assert.match(r.out, /enabled and started mosaic-bus@acme\.service, then mosaic-webui\.service\n$/);
+  assert.deepEqual(read(h.log).trim().split("\n"), [
+    "is-active --quiet [email protected]",
+    "is-active --quiet mosaic-webui.service",
+    "daemon-reload",
+    "enable [email protected] mosaic-webui.service",
+    "start [email protected]",
+    "start mosaic-webui.service",
+  ]);
+});
+
+test("PATH starts with the --node directory, for a node outside the default list and for /usr/bin/node", (t) => {
+  const h = hub(t);
+  const node = outsideNode();
+  assert.equal(unit(h, { node }).code, 0);
+  for (const f of [busFile(h), webuiFile(h)]) assert.deepEqual(lines(read(f), "Environment"), [`PATH=${dirname(node)}:/usr/local/bin:/usr/bin:/bin`]);
+  assert.match(lines(read(webuiFile(h)), "ExecStart")[0], new RegExp(`^${node} `));
+});
+
+test("a failed bus start refuses with the Console not started", (t) => {
+  const h = hub(t);
+  const r = unit(h, { env: { CASE2_TEST_FAIL: "start [email protected]" } });
+  refuses(r, /start mosaic-bus@acme\.service failed; the Console is not started/);
+  assert.deepEqual(read(h.log).trim().split("\n").slice(2), ["daemon-reload", "enable [email protected] mosaic-webui.service", "start [email protected]"]);
+});
+
+test("the script never links a unit file", () => {
+  assert.doesNotMatch(read(UNIT), /systemctl link/);
+});
+
+test("factory renders --pm once and one MOSAIC_CLAUDE_BIN line, and without them both tokens render empty", (t) => {
+  const h = hub(t);
+  assert.equal(unit(h, { profile: "factory", extra: ["--pm", "--claude", TRUE_BIN] }).code, 0);
+  const bus = read(busFile(h));
+  const exec = lines(bus, "ExecStart");
+  assert.equal(exec.length, 1);
+  assert.match(exec[0], / bus start %i --pm$/);
+  assert.equal(exec[0].split("--pm").length, 2);
+  assert.deepEqual(lines(bus, "Environment"), ["PATH=/usr/bin:/usr/local/bin:/bin", `MOSAIC_CLAUDE_BIN=${TRUE_BIN}`]);
+  assert.deepEqual(lines(read(webuiFile(h)), "ExecStart"), [`${USR_NODE} ${copyDir(h)}/packages/webui/src/cli.mjs serve ${factoryFlags().join(" ")}`]);
+
+  const plain = hub(t);
+  assert.equal(unit(plain, { profile: "factory" }).code, 0);
+  const text = read(busFile(plain));
+  assert.deepEqual(lines(text, "ExecStart"), [`${copyDir(plain)}/scripts/mosaic bus start %i`]);
+  assert.doesNotMatch(text, /MOSAIC_CLAUDE_BIN|@PM_FLAGS@|@CLAUDE_ENV@/);
+});
+
+test("a re-install over running units says they are still on the old copy and must restart together, never that it started them", (t) => {
+  const h = hub(t);
+  assert.equal(unit(h).code, 0);
+  const both = unit(h, { copy: COPY_B, env: { CASE2_TEST_ACTIVE: "[email protected] mosaic-webui.service" } });
+  assert.equal(both.code, 0, both.err);
+  assert.doesNotMatch(both.out, /started/);
+  assert.match(both.out, new RegExp(`mosaic-bus@acme\\.service was already running, so it is still on copy ${COPY_A}, not copy ${COPY_B}`));
+  assert.match(both.out, new RegExp(`mosaic-webui\\.service was already running, so it is still on copy ${COPY_A}, not copy ${COPY_B}`));
+  assert.match(both.out, new RegExp(`restart mosaic-bus@acme\\.service and mosaic-webui\\.service together to put both on copy ${COPY_B}`));
+  assert.deepEqual(read(h.log).trim().split("\n").slice(-2), ["start [email protected]", "start mosaic-webui.service"]);
+
+  // Only the Console ran (the bus had stopped): the bus starts on the new copy, the Console stays.
+  const one = unit(h, { copy: COPY_A, env: { CASE2_TEST_ACTIVE: "mosaic-webui.service" } });
+  assert.equal(one.code, 0, one.err);
+  assert.match(one.out, new RegExp(`started mosaic-bus@acme\\.service on copy ${COPY_A}`));
+  assert.match(one.out, new RegExp(`mosaic-webui\\.service was already running, so it is still on copy ${COPY_B}, not copy ${COPY_A}`));
+  assert.doesNotMatch(one.out, /started mosaic-webui/);
+  assert.match(one.out, /restart mosaic-bus@acme\.service and mosaic-webui\.service together/);
+});
+
+test("a re-install to another copy re-renders both units, and an edited installed unit refuses", (t) => {
+  const h = hub(t);
+  assert.equal(unit(h).code, 0);
+  assert.equal(unit(h, { copy: COPY_B }).code, 0);
+  assert.match(read(busFile(h)), new RegExp(`copies/${COPY_B}/scripts/mosaic`));
+  assert.doesNotMatch(read(busFile(h)) + read(webuiFile(h)), new RegExp(COPY_A));
+
+  const edits = [
+    [busFile, (s) => s.replace("User=mosaic", "User=root"), /User= must be exactly once in \[Service\], as User=mosaic/],
+    [webuiFile, (s) => s.replace(/^ExecStart=(.*)$/m, "ExecStart=$1 --board http://127.0.0.1:1"), /ExecStart= must be exactly once/],
+    [busFile, (s) => s.replace("ProtectHome=yes\n", ""), /ProtectHome= must be exactly once/],
+    [webuiFile, (s) => s.replace("PrivateTmp=yes\n", ""), /PrivateTmp= must be exactly once/],
+    [busFile, (s) => s.replace("Type=simple", "Type=simple\nX-Note=%h"), /%h is left/],
+  ];
+  for (const [file, edit, pattern] of edits) {
+    const before = read(file(h));
+    writeFileSync(file(h), edit(before));
+    refuses(unit(h, { copy: COPY_B }), pattern);
+    writeFileSync(file(h), before);
+  }
+  assert.equal(unit(h, { copy: COPY_B }).code, 0);
+});
+
+test("a template with a namespace, user or system call restriction refuses", (t) => {
+  const h = hub(t);
+  for (const line of ["RestrictNamespaces=yes", "PrivateUsers=yes", "SystemCallFilter=@system-service"]) {
+    const key = line.split("=")[0];
+    for (const [from, env] of [[BUS_TEMPLATE, "CASE2_BUS_TEMPLATE"], [WEBUI_TEMPLATE, "CASE2_WEBUI_TEMPLATE"]]) {
+      const file = template(h, from, `t-${key}.in`, (s) => s.replace("NoNewPrivileges=yes", `NoNewPrivileges=yes\n${line}`));
+      refuses(unit(h, { env: { [env]: file } }), new RegExp(`refusing ${key}=`));
+    }
+  }
+  assert.equal(existsSync(busFile(h)), false);
+});
+
+test("the bus template's EnvironmentFile line must be there and point at the session env, and the Console template must have none", (t) => {
+  const h = hub(t);
+  const gone = template(h, BUS_TEMPLATE, "no-env.in", (s) => s.replace(/^EnvironmentFile=.*\n/m, ""));
+  refuses(unit(h, { env: { CASE2_BUS_TEMPLATE: gone } }), /EnvironmentFile= must be exactly once/);
+  const elsewhere = template(h, BUS_TEMPLATE, "env-elsewhere.in", (s) => s.replace("EnvironmentFile=-@SESSION_ENV@", "EnvironmentFile=-/etc/other.env"));
+  refuses(unit(h, { env: { CASE2_BUS_TEMPLATE: elsewhere } }), /EnvironmentFile= must be exactly once/);
+  const added = template(h, WEBUI_TEMPLATE, "webui-env.in", (s) => s.replace("NoNewPrivileges=yes", "NoNewPrivileges=yes\nEnvironmentFile=-/etc/other.env"));
+  refuses(unit(h, { env: { CASE2_WEBUI_TEMPLATE: added } }), /refusing EnvironmentFile=/);
+});
+
+test("a template holding an unknown token, PermissionsStartOnly or a privileged Exec prefix refuses", (t) => {
+  const h = hub(t);
+  const token = template(h, BUS_TEMPLATE, "token.in", (s) => s.replace("Type=simple", "Type=simple\nX-Note=@SECRET@"));
+  refuses(unit(h, { env: { CASE2_BUS_TEMPLATE: token } }), /a token is left after the render: @SECRET@/);
+  const webuiToken = template(h, WEBUI_TEMPLATE, "wtoken.in", (s) => s.replace("Type=simple", "Type=simple\nX-Note=@SECRET@"));
+  refuses(unit(h, { env: { CASE2_WEBUI_TEMPLATE: webuiToken } }), /a token other than one @FLAGS@/);
+  const pso = template(h, BUS_TEMPLATE, "pso.in", (s) => s.replace("Type=simple", "Type=simple\nPermissionsStartOnly=yes"));
+  refuses(unit(h, { env: { CASE2_BUS_TEMPLATE: pso } }), /refusing PermissionsStartOnly=/);
+  for (const pre of ["+/srv/mosaic/x", "-+/srv/mosaic/x"]) {
+    const file = template(h, BUS_TEMPLATE, "pre.in", (s) => s.replace("Type=simple", `Type=simple\nExecStartPre=${pre}`));
+    refuses(unit(h, { env: { CASE2_BUS_TEMPLATE: file } }), /an Exec line that runs with full privileges: ExecStartPre=/);
+  }
+});
+
+test("a symlink at either unit path refuses", (t) => {
+  for (const name of ["[email protected]", "mosaic-webui.service"]) {
+    const h = hub(t);
+    const target = join(h.root, "elsewhere");
+    writeFileSync(target, "");
+    symlinkSync(target, join(h.units, name));
+    refuses(unit(h), new RegExp(`${name.replace(".", "\\.")} is a symlink`));
+  }
+});
+
+test("a --node that is relative, not root-owned or under <home> refuses", (t) => {
+  const h = hub(t);
+  refuses(unit(h, { node: "bin/node" }), /--node must be an absolute path/);
+  const mine = script(join(h.root, "opt", "node"), "exit 0");
+  refuses(unit(h, { node: mine }), /--node: .* is not owned by root/);
+  const inside = script(join(h.home, "bin", "node"), "exit 0");
+  refuses(unit(h, { node: inside }), /--node must be outside/);
+});
+
+test("a re-install with a different --node or different serve flags refuses", (t) => {
+  const h = hub(t);
+  assert.equal(unit(h).code, 0);
+  // A new node moves PATH too, so the installed unit fails its own Environment= check first.
+  refuses(unit(h, { node: outsideNode() }), /installed .*: the Environment= lines must be exactly/);
+  const flags = libraryFlags(h).map((f) => (f === "melanie" ? "someone" : f));
+  refuses(unit(h, { flags }), /installed .*: ExecStart= must be exactly once/);
+  // A line check_unit doesn't fix still has to equal the render.
+  writeFileSync(busFile(h), read(busFile(h)).replace(/^Description=.*$/m, "Description=edited"));
+  refuses(unit(h), /differs from the render in more than the copy id/);
+});
+
+test("an installed pair whose units name different copies refuses", (t) => {
+  const h = hub(t);
+  assert.equal(unit(h).code, 0);
+  writeFileSync(webuiFile(h), read(webuiFile(h)).replaceAll(COPY_A, COPY_B));
+  refuses(unit(h), new RegExp(`the installed units name different copies, ${COPY_A} and ${COPY_B}`));
+});
+
+test("a copy id that is short, uppercase, holds / or .., or names no directory refuses", (t) => {
+  const h = hub(t);
+  for (const copy of ["a".repeat(39), "A".repeat(40), `${"a".repeat(19)}/${"a".repeat(20)}`, `..${"a".repeat(38)}`]) {
+    refuses(unit(h, { copy }), /--copy must be a full 40-character lower-case commit id/);
+  }
+  refuses(unit(h, { copy: "c".repeat(40) }), /no copy directory/);
+});
+
+test("library refuses a privileged-floor miss, a bad proof pair and every flag outside its set", (t) => {
+  const h = hub(t);
+  const base = libraryFlags(h);
+  const without = (...names) => {
+    const out = [];
+    for (let i = 0; i < base.length; i++) {
+      if (names.includes(base[i])) { if (base[i] !== "--send") i++; continue; }
+      out.push(base[i]);
+    }
+    return out;
+  };
+  refuses(unit(h, { flags: base.map((f) => (f === "443" ? "7332" : f)) }), /--port must be 1\.\.1023/);
+  refuses(unit(h, { flags: without("--proof-header", "--proof-file") }), /serve flag --proof-header is required/);
+  refuses(unit(h, { flags: base.map((f) => (f === "X-Auth-User" ? "X-Authentik-Uid" : f)) }), /must be an Authentik uid/);
+  assert.equal(unit(h, { flags: base.map((f) => (f === "X-Auth-User" ? "X-Authentik-Uid" : f === "melanie" ? "0".repeat(64) : f)) }).code, 0);
+  rmSync(busFile(h));
+  rmSync(webuiFile(h));
+  for (const [flag, value, pattern] of [
+    ["--tester-port", "7333", /case2-unit.sh retires tester TCP; use --tester-socket/],
+    ["--tester-socket", null, /the library profile refuses --tester-socket/],
+    ["--checkout", "/srv/x", /refusing --checkout/],
+    ["--board", "http://127.0.0.1:7331", /refusing --board/],
+    ["--sso", null, /refusing --sso/],
+    ["--nonsense", "1", /unknown serve flag: --nonsense/],
+  ]) {
+    refuses(unit(h, { flags: [...base, flag, ...(value === null ? [] : [value])] }), pattern);
+  }
+  refuses(unit(h, { flags: base.map((f) => (f === "acme" ? "other" : f)) }), /serve --business other is not the unit's business acme/);
+  refuses(unit(h, { extra: ["--pm"] }), /the library profile refuses --pm/);
+  refuses(unit(h, { extra: ["--claude", TRUE_BIN] }), /the library profile refuses --claude/);
+
+  chmodSync(h.proof, 0o644);
+  refuses(unit(h), /mode 0600 or 0400, not 644/);
+  chmodSync(h.proof, 0o600);
+  const link = join(h.secrets, "proof-link");
+  symlinkSync(h.proof, link);
+  refuses(unit(h, { flags: base.map((f) => (f === h.proof ? link : f)) }), /must not be a symlink/);
+  const dataRoot = join(h.home, ".mosaic-dev");
+  mkdirSync(dataRoot, { recursive: true });
+  const outside = join(dataRoot, "proof");
+  writeFileSync(outside, "made-up-proof\n");
+  chmodSync(outside, 0o600);
+  refuses(unit(h, { flags: base.map((f) => (f === h.proof ? outside : f)) }), /must be under .*secrets, outside the data root/);
+  assert.equal(existsSync(busFile(h)), false);
+});
+
+// A non-root test can't make a root-owned file under the scratch home, so the
+// owner case names another uid in the passwd database instead.
+test("library refuses a proof file not owned by <user>'s uid", (t) => {
+  const h = hub(t, { uid: UID + 4242 });
+  refuses(unit(h), new RegExp(`proxy proof file must be owned by mosaic \\(uid ${UID + 4242}\\)`));
+});
+
+test("factory refuses duplicate socket, a missing --port or --business, and each proxy flag", (t) => {
+  const h = hub(t);
+  refuses(unit(h, { profile: "factory", flags: [...factoryFlags(), '--tester-socket'] }), /given twice/);
+  refuses(unit(h, { profile: "factory", flags: [...factoryFlags(), '--port', '443'] }), /given twice/);
+  refuses(unit(h, { profile: "factory", flags: ["--business", "acme"] }), /serve flag --port is required/);
+  refuses(unit(h, { profile: "factory", flags: ["--port", "443"] }), /serve flag --business is required/);
+  for (const [flag, value] of [["--public-host", "x.example"], ["--auth-header", "X-A"], ["--allow-user", "u"], ["--proof-header", "X-P"], ["--proof-file", h.proof], ["--send", null]]) {
+    refuses(unit(h, { profile: "factory", flags: [...factoryFlags(), flag, ...(value === null ? [] : [value])] }), new RegExp(`the factory profile refuses ${flag}`));
+  }
+  for (const [flag, value, pattern] of [["--checkout", "/srv/x", /refusing --checkout/], ["--board", "http://127.0.0.1:7331", /refusing --board/], ["--sso", null, /refusing --sso/], ["--nonsense", "1", /unknown serve flag/]]) {
+    refuses(unit(h, { profile: "factory", flags: [...factoryFlags(), flag, ...(value === null ? [] : [value])] }), pattern);
+  }
+});
+
+test("row253 factory refuses retired TCP and a value after the socket marker", (t) => {
+  const h = hub(t);
+  refuses(unit(h, { profile: "factory", flags: ['--port','443','--business','acme','--tester-port','7333'] }), /case2-unit.sh retires tester TCP; use --tester-socket/);
+  refuses(unit(h, { profile: 'factory', flags: [...factoryFlags(), '7333'] }), /unknown serve flag: 7333/);
+});
+
+test("factory refuses a --claude that is relative, not root-owned or under <home>, and a re-install with another --pm or --claude", (t) => {
+  const h = hub(t);
+  refuses(unit(h, { profile: "factory", extra: ["--claude", "bin/claude"] }), /--claude must be an absolute path/);
+  const mine = script(join(h.root, "opt", "claude"), "exit 0");
+  refuses(unit(h, { profile: "factory", extra: ["--claude", mine] }), /--claude: .* is not owned by root/);
+  const inside = script(join(h.home, "bin", "claude"), "exit 0");
+  refuses(unit(h, { profile: "factory", extra: ["--claude", inside] }), /--claude must be outside/);
+
+  assert.equal(unit(h, { profile: "factory", extra: ["--pm", "--claude", TRUE_BIN] }).code, 0);
+  refuses(unit(h, { profile: "factory", extra: ["--claude", TRUE_BIN] }), /--pm and --claude must equal the installed ones|ExecStart= must be exactly once/);
+  refuses(unit(h, { profile: "factory", extra: ["--pm"] }), /Environment= lines must be exactly|differs from the render/);
+  refuses(unit(h, { profile: "factory", extra: ["--pm", "--claude", USR_NODE] }), /Environment= lines must be exactly|differs from the render/);
+});
+
+// ---- case2-precheck.sh ----
+
+// A scratch user for the precheck: a config, a business file, an installed Console unit,
+// fakes on PATH and a fake /proc/sys.
+function host(t, { roles = {}, vars = {}, keyFile = `ZAI_API_KEY=${FIXTURE_KEY}\n`, port = "443", busClaude = null } = {}) {
+  const root = tmp(t, "case2-pre-");
+  const home = join(root, "home");
+  const configDir = join(home, ".config", "mosaic-dev");
+  const config = writeJson(join(configDir, "config.json"), {
+    configVersion: 1,
+    environment: "production",
+    dataRoot: join(home, ".mosaic-dev"),
+    execution: { backend: "docker", provider: "zai", model: "glm-5.3-flash", adapter: "pi" },
+  });
+  const doc = businessDoc(root);
+  doc.roles.cto.vars = { harness: "pi" };
+  for (const [name, v] of Object.entries(roles)) doc.roles[name].vars = v;
+  Object.assign(doc.vars, vars);
+  writeJson(join(configDir, "businesses", "acme.json"), doc);
+  const secrets = join(configDir, "secrets");
+  mkdirSync(secrets, { recursive: true, mode: 0o700 });
+  if (keyFile !== null) {
+    writeFileSync(join(secrets, "claude-session.env"), keyFile);
+    chmodSync(join(secrets, "claude-session.env"), 0o600);
+  }
+  const units = join(root, "units");
+  mkdirSync(units);
+  writeFileSync(join(units, "mosaic-webui.service"), `[Service]\nExecStart=/usr/bin/node /x/cli.mjs serve --port ${port} --business acme\n`);
+  writeFileSync(join(units, "[email protected]"), `[Service]\nEnvironment=PATH=/usr/bin\n${busClaude ? `Environment=MOSAIC_CLAUDE_BIN=${busClaude}\n` : ""}`);
+  const sys = join(root, "sys");
+  mkdirSync(join(sys, "net", "ipv4"), { recursive: true });
+  mkdirSync(join(sys, "kernel"), { recursive: true });
+  writeFileSync(join(sys, "net", "ipv4", "ip_unprivileged_port_start"), "1024\n");
+  writeFileSync(join(sys, "kernel", "apparmor_restrict_unprivileged_userns"), "1\n");
+  const bin = join(root, "bin");
+  const me = spawnSync("id", ["-un"], { encoding: "utf8" }).stdout.trim();
+  script(join(bin, "getent"), `[ "$1" = passwd ] && [ "$2" = '${me}' ] && echo '${me}:x:${UID}:${GID}::${home}:/bin/bash'`);
+  script(join(bin, "sudo"), "exit 1");
+  script(join(bin, "id"), `if [ "$1" = -G ]; then echo "\${CASE2_TEST_GROUPS:-${GID}}"; else exec /usr/bin/id "$@"; fi`);
+  script(join(bin, "node"), `if [ "$1" = --version ]; then echo "\${CASE2_TEST_NODE:-v24.3.0}"; exit 0; fi\nexec '${process.execPath}' "$@"`);
+  script(join(bin, "bwrap"), `exit "\${CASE2_TEST_BWRAP:-0}"`);
+  return { root, home, configDir, config, secrets, units, sys, bin, dataRoot: join(home, ".mosaic-dev") };
+}
+
+// A fake claude: replace answers with the marker and a small prompt; append answers with a large one;
+// nomarker answers with a small prompt and no marker; text answers with plain text, not JSON.
+function fakeClaude(dir, kind) {
+  return script(join(dir, "claude"), `[ "$1" = --version ] && { echo "9.9.9 (Claude Code, ${kind} fake)"; exit 0; }
+file=''
+while [ $# -gt 0 ]; do [ "$1" = --system-prompt-file ] && file="$2"; shift; done
+marker="$(awk '{ print $NF }' "$file")"
+${kind === "nomarker" ? "marker=something-else" : ""}
+${kind === "text" ? 'echo "$marker"; exit 0' : ""}
+tokens=${kind === "append" ? 9000 : 40}
+printf '{"result":"%s","usage":{"input_tokens":%s,"cache_read_input_tokens":0}}\\n' "$marker" "$tokens"`);
+}
+
+// This host may have a claude in /usr/bin, so this PATH links every /usr/bin entry but that one.
+function pathWithoutClaude(x) {
+  const usr = join(x.root, "usr-bin");
+  mkdirSync(usr);
+  for (const name of readdirSync("/usr/bin")) if (name !== "claude") symlinkSync(join("/usr/bin", name), join(usr, name));
+  return `${x.bin}:${usr}`;
+}
+
+function precheck(x, { profile = "library", env = {}, path } = {}) {
+  const r = spawnSync(PRECHECK, ["--business", "acme", "--profile", profile], {
+    encoding: "utf8",
+    timeout: 60000,
+    env: {
+      PATH: path ?? `${x.bin}:/usr/bin:/bin`,
+      HOME: x.home,
+      MOSAIC_CONFIG: x.config,
+      CASE2_UNIT_DIR: x.units,
+      CASE2_PROC_SYS: x.sys,
+      CASE2_GETENT: join(x.bin, "getent"),
+      ...env,
+    },
+  });
+  const out = r.stdout + r.stderr;
+  assert.doesNotMatch(out, new RegExp(FIXTURE_KEY), "the precheck printed the fixture key");
+  return { code: r.status, out };
+}
+
+function blocked(r, pattern) {
+  assert.equal(r.code, 1, r.out);
+  assert.match(r.out, pattern);
+}
+
+test("the precheck passes on a good host and prints free memory, without the key", (t) => {
+  const x = host(t);
+  const r = precheck(x);
+  assert.equal(r.code, 0, r.out);
+  assert.match(r.out, /ok {6}config validates/);
+  assert.match(r.out, /ok {6}bus\.tester is off/);
+  assert.match(r.out, /ok {6}net\.ipv4\.ip_unprivileged_port_start 1024 is above the Console's port 443/);
+  assert.match(r.out, /claude-session\.env sets ZAI_API_KEY/);
+  assert.match(r.out, /free memory: \d+ MiB/);
+  assert.doesNotMatch(r.out, /claude .*fake|marker/);
+});
+
+test("the precheck refuses each failed host check", (t) => {
+  blocked(precheck(host(t), { env: { CASE2_TEST_NODE: "v22.22.2" } }), /REFUSED node v22\.22\.2 is older than 24/);
+  blocked(precheck(host(t), { env: { CASE2_TEST_GROUPS: `${GID} 998` } }), /REFUSED id -G prints more than one group/);
+  const sudo = host(t);
+  script(join(sudo.bin, "sudo"), "exit 0");
+  blocked(precheck(sudo), /REFUSED sudo -n true succeeds/);
+  blocked(precheck(host(t), { env: { XDG_DATA_HOME: "/elsewhere" } }), /REFUSED XDG_DATA_HOME is \/elsewhere/);
+  const home = host(t);
+  assert.equal(precheck(home, { env: { XDG_DATA_HOME: `${home.home}/.local/share` } }).code, 0);
+  blocked(precheck(host(t), { env: { HOME: "/tmp" } }), /REFUSED HOME is \/tmp/);
+
+  const runs = host(t);
+  mkdirSync(join(runs.dataRoot, "launches", "acme"), { recursive: true, mode: 0o755 });
+  chmodSync(join(runs.dataRoot, "launches", "acme"), 0o755);
+  blocked(precheck(runs), /REFUSED run root .* is not a 0700 directory \(mode 755\)/);
+  chmodSync(join(runs.dataRoot, "launches", "acme"), 0o700);
+  assert.match(precheck(runs).out, /ok {6}run root .* is 0700/);
+
+  const bad = host(t);
+  writeFileSync(bad.config, "{ not json");
+  blocked(precheck(bad), /REFUSED config:/);
+});
+
+test("the precheck refuses a user missing from passwd, a business file that does not load, and a symlinked run root", (t) => {
+  const nouser = host(t);
+  script(join(nouser.bin, "getent"), "exit 2");
+  blocked(precheck(nouser), /REFUSED user: no .* in the passwd database/);
+
+  const unparsed = host(t);
+  writeFileSync(join(unparsed.configDir, "businesses", "acme.json"), "{ not json");
+  blocked(precheck(unparsed), /REFUSED business file: cannot read .*acme\.json/);
+  const gone = host(t);
+  rmSync(join(gone.configDir, "businesses", "acme.json"));
+  blocked(precheck(gone), /REFUSED business file: cannot read .*acme\.json: ENOENT/);
+  const invalid = host(t);
+  const file = join(invalid.configDir, "businesses", "acme.json");
+  const doc = JSON.parse(read(file));
+  doc.notAField = true;
+  writeJson(file, doc);
+  const r = precheck(invalid);
+  blocked(r, /REFUSED business file: /);
+  assert.doesNotMatch(r.out, /REFUSED business file: cannot read/);
+
+  // stat follows a link, so a link to a 0700 directory would read as 0700.
+  const link = host(t);
+  const target = join(link.root, "elsewhere");
+  mkdirSync(target, { mode: 0o700 });
+  chmodSync(target, 0o700);
+  mkdirSync(join(link.dataRoot, "launches"), { recursive: true });
+  symlinkSync(target, join(link.dataRoot, "launches", "acme"));
+  blocked(precheck(link), /REFUSED run root .* is a symlink/);
+});
+
+test("a bwrap that fails refuses and prints the sysctl and where bwrap is", (t) => {
+  const x = host(t);
+  blocked(precheck(x, { env: { CASE2_TEST_BWRAP: "1" } }), new RegExp(`REFUSED bwrap .* failed; bwrap: ${join(x.bin, "bwrap")}; kernel\\.apparmor_restrict_unprivileged_userns: 1`));
+});
+
+test("an unprivileged port floor at or below the Console's port refuses, and so does a missing Console unit", (t) => {
+  for (const floor of ["443", "80"]) {
+    const x = host(t);
+    writeFileSync(join(x.sys, "net", "ipv4", "ip_unprivileged_port_start"), `${floor}\n`);
+    blocked(precheck(x), new RegExp(`REFUSED net\\.ipv4\\.ip_unprivileged_port_start is ${floor}, at or below the Console's port 443`));
+  }
+  const x = host(t);
+  rmSync(join(x.units, "mosaic-webui.service"));
+  blocked(precheck(x), /REFUSED no installed Console unit/);
+  const noPort = host(t);
+  writeFileSync(join(noPort.units, "mosaic-webui.service"), "[Service]\nExecStart=/usr/bin/node /x/cli.mjs serve --business acme\n");
+  blocked(precheck(noPort), /REFUSED .*mosaic-webui\.service has no --port in its ExecStart/);
+  const noFloor = host(t);
+  rmSync(join(noFloor.sys, "net", "ipv4", "ip_unprivileged_port_start"));
+  blocked(precheck(noFloor), /REFUSED cannot read net\.ipv4\.ip_unprivileged_port_start/);
+});
+
+test("bus.tester: library refuses it on, factory needs it on, and factory refuses a library business", (t) => {
+  blocked(precheck(host(t, { vars: { "bus.tester": true } })), /REFUSED bus\.tester is on; the library profile needs it off/);
+  blocked(precheck(host(t), { profile: "factory" }), /REFUSED bus\.tester is off; the factory profile needs it on/);
+  const on = precheck(host(t, { vars: { "bus.tester": true } }), { profile: "factory" });
+  assert.equal(on.code, 0, on.out);
+  const lib = host(t, { vars: { "bus.tester": true } });
+  const file = join(lib.configDir, "businesses", "acme.json");
+  const doc = JSON.parse(read(file));
+  doc.projects.stack.kind = "library";
+  writeJson(file, doc);
+  blocked(precheck(lib, { profile: "factory" }), /REFUSED profile-library-business: .* projects stack are library projects/);
+});
+
+test("the claude check runs only for a claude-code instance, and refuses a claude that appends or answers wrong", (t) => {
+  // No claude-code instance and no claude anywhere on PATH: the precheck passes.
+  const none = host(t);
+  const r = precheck(none, { path: pathWithoutClaude(none) });
+  assert.equal(r.code, 0, r.out);
+  assert.doesNotMatch(r.out, /--system-prompt-file|claude is installed/);
+
+  const good = host(t, { roles: { cto: { harness: "claude-code" } } });
+  fakeClaude(good.bin, "replace");
+  const pass = precheck(good);
+  assert.equal(pass.code, 0, pass.out);
+  assert.match(pass.out, /claude .*9\.9\.9 \(Claude Code, replace fake\)/);
+  assert.match(pass.out, /ok {6}claude replaces its prompt with --system-prompt-file \(40 input tokens\)/);
+
+  const bad = host(t, { roles: { cto: { harness: "claude-code" } } });
+  fakeClaude(bad.bin, "append");
+  blocked(precheck(bad), /REFUSED claude adds to its own prompt with --system-prompt-file: 9000 input tokens/);
+
+  const nomarker = host(t, { roles: { cto: { harness: "claude-code" } } });
+  fakeClaude(nomarker.bin, "nomarker");
+  blocked(precheck(nomarker), /REFUSED claude's reply to the marker prompt lacks the marker \(40 input tokens\)/);
+
+  const text = host(t, { roles: { cto: { harness: "claude-code" } } });
+  fakeClaude(text.bin, "text");
+  blocked(precheck(text), /REFUSED claude gave no JSON reply to the marker prompt/);
+
+  const missing = host(t, { roles: { cto: { harness: "claude-code" } } });
+  blocked(precheck(missing, { path: pathWithoutClaude(missing) }), /REFUSED an instance runs claude-code and no claude is installed/);
+});
+
+test("the claude check runs the bus unit's MOSAIC_CLAUDE_BIN over claude on PATH", (t) => {
+  const pinned = join(tmp(t, "case2-claude-"), "pinned");
+  const replace = fakeClaude(pinned, "replace");
+  const x = host(t, { roles: { cto: { harness: "claude-code" } }, busClaude: replace });
+  fakeClaude(x.bin, "append");
+  const r = precheck(x);
+  assert.equal(r.code, 0, r.out);
+  assert.match(r.out, /replace fake/);
+
+  const pinnedBad = join(tmp(t, "case2-claude-"), "pinned");
+  const append = fakeClaude(pinnedBad, "append");
+  const y = host(t, { roles: { cto: { harness: "claude-code" } }, busClaude: append });
+  fakeClaude(y.bin, "replace");
+  blocked(precheck(y), /REFUSED claude adds to its own prompt/);
+});
+
+test("the session env file refuses when missing, open to others, a symlink, empty, or emptied by a later line", (t) => {
+  blocked(precheck(host(t, { keyFile: null })), /REFUSED an instance's provider is zai and .*claude-session\.env is missing/);
+  const open = host(t);
+  chmodSync(join(open.secrets, "claude-session.env"), 0o644);
+  blocked(precheck(open), /REFUSED .*claude-session\.env must be owned by .* at 0600 \(mode 644\)/);
+  const link = host(t, { keyFile: null });
+  const real = join(link.root, "real.env");
+  writeFileSync(real, `ZAI_API_KEY=${FIXTURE_KEY}\n`);
+  chmodSync(real, 0o600);
+  symlinkSync(real, join(link.secrets, "claude-session.env"));
+  blocked(precheck(link), /REFUSED .*claude-session\.env is a symlink/);
+  blocked(precheck(host(t, { keyFile: "ZAI_API_KEY=\n" })), /REFUSED .*sets no nonempty ZAI_API_KEY/);
+  blocked(precheck(host(t, { keyFile: `ZAI_API_KEY=${FIXTURE_KEY}\nZAI_API_KEY=\n` })), /REFUSED .*sets no nonempty ZAI_API_KEY/);
+  const quoted = precheck(host(t, { keyFile: `ZAI_API_KEY=\nZAI_API_KEY="${FIXTURE_KEY}"\n` }));
+  assert.equal(quoted.code, 0, quoted.out);
+});
+
+// ---- the bind test (mos-1100) ----
+
+// A session can't take the Console's port: inside the sandbox a real session gets, a bind below
+// 1024 fails with EACCES, and the same bind on a free port of 1024 or above succeeds.
+const sandboxSkip = sandboxProblem() ?? false;
+const LOW_PORT = 980;
+test("inside a session's sandbox a bind below 1024 fails with EACCES, and a bind on a free high port succeeds", { skip: sandboxSkip, timeout: 30000 }, async (t) => {
+  const floor = Number(read("/proc/sys/net/ipv4/ip_unprivileged_port_start").trim());
+  assert.ok(floor > LOW_PORT, `this host's net.ipv4.ip_unprivileged_port_start is ${floor}, at or below the test port ${LOW_PORT}, so the test can't show the sandbox refuses it`);
+  const root = tmp(t, "c2b-");
+  const runDir = join(root, "run");
+  const workspace = join(root, "ws");
+  mkdirSync(runDir);
+  mkdirSync(workspace);
+  mkdirSync(join(runDir, "bundle"));
+  writeFileSync(join(runDir, "session.json"), "{}");
+  const adapter = join(root, "adapter.sh");
+  const brokerSocket = join(root, "broker.sock");
+  writeFileSync(adapter, "");
+  writeFileSync(brokerSocket, "");
+  prepareRun(runDir);
+  const list = binds({ runDir, workspace, adapter, harnessMounts: [], brokerSocket });
+  const high = await new Promise((done) => {
+    const s = createServer().listen(0, "127.0.0.1", () => { const { port } = s.address(); s.close(() => done(port)); });
+  });
+  const bindIn = (port) => {
+    const code = `require("net").createServer().on("error", (e) => { console.log(e.code); process.exit(0); }).listen(${port}, "127.0.0.1", function () { console.log("bound"); this.close(); });`;
+    const argv = sandboxArgv(list, runDir, [process.execPath, "-e", code], { business: "acme", role: "coder" });
+    const r = spawnSync(argv[0], argv.slice(1), { encoding: "utf8", timeout: 10000 });
+    assert.equal(r.status, 0, r.stderr);
+    return r.stdout.trim();
+  };
+  assert.equal(bindIn(LOW_PORT), "EACCES");
+  assert.equal(bindIn(high), "bound");
+});
@@ -0,0 +1,133 @@
+# row253-supervisor-begin
+IFS= read -r -d '' TESTER_SUPERVISOR <<'MOSAIC_TESTER_SUPERVISOR' || :
+set +m
+seconds="$1" setsid_bin="$2" sleep_bin="$3"; shift 3
+child="" timer="" verified=0
+stat_fields() {
+    local pid="$1" raw="" rest
+    # EOF is expected: stat has no NUL. Decide on content, not read's status.
+    IFS= read -r -d '' raw < "/proc/$pid/stat" 2>/dev/null || :
+    [ -n "$raw" ] || { [ -e "/proc/$pid/stat" ] && return 1; return 3; }
+    rest="${raw##*) }"
+    [ "$rest" != "$raw" ] || return 1
+    read -r ST_STATE ST_PARENT ST_GROUP ST_SESSION _ <<< "$rest"
+    [[ "$ST_STATE" =~ ^[A-Za-z]$ && "$ST_SESSION" =~ ^[0-9]+$ && "$ST_GROUP" =~ ^[0-9]+$ ]]
+}
+clock_cs() {
+    local boot spare
+    read -r boot spare < /proc/uptime || return 1
+    [[ "$boot" =~ ^([0-9]+)\.([0-9]{2})$ ]] || return 1
+    CLOCK_CS=$((10#${BASH_REMATCH[1]} * 100 + 10#${BASH_REMATCH[2]}))
+}
+clean_session() {
+    local entry pid rc live until=""
+    while :; do
+        live=0
+        for entry in /proc/[0-9]*/stat; do
+            pid="${entry%/stat}"; pid="${pid##*/}"
+            rc=0; stat_fields "$pid" || rc=$?
+            [ "$rc" != 3 ] || continue
+            [ "$rc" = 0 ] || return 1
+            [ "$ST_SESSION" = "$child" ] || continue
+            case "$ST_STATE" in Z|X) continue ;; esac
+            live=1
+            if ! kill -KILL "$pid" 2>/dev/null; then
+                rc=0; stat_fields "$pid" || rc=$?
+                [ "$rc" = 3 ] || { [ "$rc" = 0 ] && { [ "$ST_STATE" = Z ] || [ "$ST_STATE" = X ]; }; } || return 1
+            fi
+        done
+        [ "$live" != 0 ] || return 0
+        clock_cs || return 1
+        # Inventory pass 1 is outside the bounded confirmation/retry budget.
+        [ -n "$until" ] || until=$((CLOCK_CS + 25))
+        [ "$CLOCK_CS" -lt "$until" ] || return 1
+        "$sleep_bin" 0.01
+    done
+}
+finish() {
+    local rc="$?"
+    trap - EXIT HUP INT TERM
+    if [ "$verified" = 1 ]; then
+        clean_session || rc=86
+    elif [ -n "$child" ]; then
+        kill -KILL "$child" 2>/dev/null || :
+    fi
+    [ -z "$child" ] || wait "$child" 2>/dev/null || :
+    if [ -n "$timer" ]; then kill -KILL "$timer" 2>/dev/null || :; wait "$timer" 2>/dev/null || :; fi
+    exit "$rc"
+}
+trap finish EXIT
+trap 'exit 88' HUP INT TERM
+"$sleep_bin" "$seconds" & timer=$!
+"$setsid_bin" "$@" & child=$!
+# Allow session creation the whole inner budget, rather than a 200 ms margin.
+while :; do
+    rc=0; stat_fields "$child" || rc=$?
+    [ "$rc" = 0 ] || exit 85
+    if [ "$ST_SESSION" = "$child" ]; then verified=1; break; fi
+    kill -0 "$timer" 2>/dev/null || exit 81
+    "$sleep_bin" 0.002
+done
+[ "$verified" = 1 ] || exit 85
+while kill -0 "$child" 2>/dev/null; do
+    kill -0 "$timer" 2>/dev/null || exit 81
+    "$sleep_bin" 0.01
+done
+kill -0 "$timer" 2>/dev/null || exit 81
+rc=0; wait "$child" || rc=$?
+[ "$rc" = 0 ] || exit 87
+exit 0
+MOSAIC_TESTER_SUPERVISOR
+# row253-supervisor-end
+
+tester_tools() {
+    local input target p st magic
+    TS_BASH="" TS_SETSID="" TS_SLEEP="" TS_TIMEOUT="" TS_HEAD=""
+    for input in /bin/bash /usr/bin/setsid /usr/bin/sleep /usr/bin/timeout /usr/bin/head; do
+        target="$(realpath -e -- "$input" 2>/dev/null)" || return 1
+        case "$target" in /home/*|/root/*|/run/user/*) return 1 ;; esac
+        [ -f "$target" ] && [ -x "$target" ] && [ ! -L "$target" ] || return 1
+        p="$target"
+        while :; do
+            st="$(stat -c '%u %a' -- "$p" 2>/dev/null)" || return 1
+            [ "${st% *}" = 0 ] && [[ "${st#* }" =~ ^[0-7]{3,4}$ ]] && (( (8#${st#* } & 8#022) == 0 )) || return 1
+            [ "$p" != / ] || break
+            p="${p%/*}"; [ -n "$p" ] || p=/
+        done
+        magic="$(/usr/bin/od -An -tx1 -N4 -- "$target" 2>/dev/null | tr -d ' \n')"
+        [ "$magic" = 7f454c46 ] || return 1
+        case "$input" in
+            /bin/bash) TS_BASH="$target" ;; /usr/bin/setsid) TS_SETSID="$target" ;;
+            /usr/bin/sleep) TS_SLEEP="$target" ;; /usr/bin/timeout) TS_TIMEOUT="$target" ;;
+            /usr/bin/head) TS_HEAD="$target" ;;
+        esac
+    done
+}
+tester_capture_reason() {
+    case "$1" in
+        81) echo inner-timeout ;; 82) echo outer-timeout ;; 83) echo output-limit ;;
+        84) echo supervisor-tools ;; 85) echo inner-session ;; 86) echo inner-cleanup ;;
+        *) echo inner-command ;;
+    esac
+}
+tester_capture() (
+    local inner="$1" outer="$2" maximum="$3" user="$4" home="$5" path="$6" file notice child="" rc=0; shift 6
+    tester_tools || exit 84
+    file="$(mktemp)" || exit 88
+    notice="$(mktemp)" || { rm -f -- "$file"; exit 88; }
+    trap 'if [ -n "$child" ]; then kill -KILL -- "-$child" 2>/dev/null || :; wait "$child" 2>/dev/null || :; fi; rm -f -- "$file" "$notice"' EXIT
+    trap 'exit 88' HUP INT TERM
+    LC_ALL=C "$TS_TIMEOUT" --verbose --signal=KILL "${outer}s" "$TS_BASH" -c '
+        set -o pipefail
+        maximum="$1"; head_bin="$2"; shift 2
+        "$@" 2>/dev/null | "$head_bin" -c "$((maximum + 1))"
+    ' -- "$maximum" "$TS_HEAD" sudo -u "$user" -H env -i "HOME=$home" "PATH=$path" "$TS_BASH" -c "$TESTER_SUPERVISOR" -- "$inner" "$TS_SETSID" "$TS_SLEEP" "$@" > "$file" 2> "$notice" &
+    child=$!
+    wait "$child" 2>/dev/null || rc=$?
+    kill -KILL -- "-$child" 2>/dev/null || :
+    # Only GNU timeout and the trusted head can write this root-side channel.
+    if [ "$rc" = 137 ] && [[ "$(<"$notice")" == *': sending signal KILL to command '* ]]; then exit 82; fi
+    [ "$(wc -c < "$file")" -le "$maximum" ] || exit 83
+    [ "$rc" = 0 ] || { case "$rc" in 81|85|86|87|88) exit "$rc" ;; *) exit 87 ;; esac; }
+    cat -- "$file"
+)
@@ -0,0 +1,322 @@
+[
+  {
+    "id": "M1",
+    "file": "scripts/case2-unit.sh",
+    "old": "            --tester-port) die \"case2-unit.sh retires tester TCP; use --tester-socket\" ;;",
+    "new": "",
+    "killer": "packages/cli/tests/case2-unit.test.mjs",
+    "pattern": "row253 factory refuses retired TCP"
+  },
+  {
+    "id": "M2",
+    "file": "scripts/case2-unit.sh",
+    "old": "[ \"$PROFILE\" = factory ] || die \"the library profile refuses --tester-socket\"",
+    "new": ":",
+    "killer": "packages/cli/tests/case2-unit.test.mjs",
+    "pattern": "library refuses a privileged-floor miss"
+  },
+  {
+    "id": "M3",
+    "file": "scripts/case2-unit.sh",
+    "old": "        [ -z \"${seen[$name]:-}\" ] || die \"serve flag $name given twice\"",
+    "new": "        :",
+    "killer": "packages/cli/tests/case2-unit.test.mjs",
+    "pattern": "factory refuses duplicate socket"
+  },
+  {
+    "id": "M4",
+    "file": "scripts/case2-unit.sh",
+    "old": "    [ \"$rc\" = 0 ] || { case \"$rc\" in 81|85|86|87|88) exit \"$rc\" ;; *) exit 87 ;; esac; }",
+    "new": "    :",
+    "killer": "packages/cli/tests/case2-unit.test.mjs",
+    "pattern": "row253 installer refuses unsafe location and query facts"
+  },
+  {
+    "id": "M5",
+    "file": "scripts/case2-unit.sh",
+    "old": "            [ \"$TS_MARKED\" = true ] || die \"the target does not support --tester-socket\"",
+    "new": "            :",
+    "killer": "packages/cli/tests/case2-unit.test.mjs",
+    "pattern": "row253 installer refuses unsafe location and query facts"
+  },
+  {
+    "id": "M6",
+    "file": "scripts/case2-unit.sh",
+    "old": "case \"$data\" in \"$home\"/*)",
+    "new": "case \"$data\" in \"$home\"*)",
+    "killer": "packages/cli/tests/case2-unit.test.mjs",
+    "pattern": "row253 installer refuses unsafe location and query facts"
+  },
+  {
+    "id": "M7",
+    "file": "scripts/case2-unit.sh",
+    "old": "case \"$home/\" in /home/*",
+    "new": "case /allowed/ in /home/*",
+    "killer": "packages/cli/tests/case2-unit.test.mjs",
+    "pattern": "row253 protected homes"
+  },
+  {
+    "id": "M8",
+    "file": "scripts/case2-unit.sh",
+    "old": "    [ \"${#TS_SOCKET}\" -le 107 ] || { TS_REASON=too-long; return 1; }",
+    "new": "    :",
+    "killer": "packages/cli/tests/case2-unit.test.mjs",
+    "pattern": "row253 installer refuses unsafe location and query facts"
+  },
+  {
+    "id": "M9",
+    "file": "scripts/case2-unit.sh",
+    "old": "        [ -d \"$parent\" ] || { TS_REASON=parent-type; return 1; }",
+    "new": "        :",
+    "killer": "packages/cli/tests/case2-unit.test.mjs",
+    "pattern": "row253 installer refuses unsafe location and query facts"
+  },
+  {
+    "id": "M10",
+    "file": "scripts/case2-unit.sh",
+    "old": "        [ \"${st% *}\" = \"$uid\" ] || { TS_REASON=parent-owner; return 1; }",
+    "new": "        :",
+    "killer": "packages/cli/tests/case2-unit.test.mjs",
+    "pattern": "row253 installer refuses unsafe location and query facts"
+  },
+  {
+    "id": "M11",
+    "file": "scripts/case2-unit.sh",
+    "old": "        [[ \"${st#* }\" =~ ^[0-7]{3,4}$ ]] && (( (8#${st#* } & 8#077) == 0 )) || { TS_REASON=parent-mode; return 1; }",
+    "new": "        :",
+    "killer": "packages/cli/tests/case2-unit.test.mjs",
+    "pattern": "row253 installer refuses unsafe location and query facts"
+  },
+  {
+    "id": "M12",
+    "file": "scripts/case1-accept.sh",
+    "old": "            --tester-port) refuse \"case1-accept.sh retires tester TCP; use --tester-socket\" ;;",
+    "new": "",
+    "killer": "packages/cli/tests/case1-accept.test.mjs",
+    "pattern": "a bad args file refuses"
+  },
+  {
+    "id": "M13",
+    "file": "scripts/case1-accept.sh",
+    "old": "[ \"$TESTER_SOCKET\" = 1 ] || refuse \"$ARGS_FILE needs one bare --tester-socket after --\"",
+    "new": ":",
+    "killer": "packages/cli/tests/case1-accept.test.mjs",
+    "pattern": "a bad args file refuses"
+  },
+  {
+    "id": "M14",
+    "file": "scripts/case1-accept.sh",
+    "old": "            *) refuse \"unknown serve flag $a\" ;;",
+    "new": "            *) : ;;",
+    "killer": "packages/cli/tests/case1-accept.test.mjs",
+    "pattern": "a bad args file refuses"
+  },
+  {
+    "id": "M15",
+    "file": "scripts/case1-accept.sh",
+    "old": "    [ \"$rc\" = 0 ] || { case \"$rc\" in 81|85|86|87|88) exit \"$rc\" ;; *) exit 87 ;; esac; }",
+    "new": "    :",
+    "killer": "packages/cli/tests/case1-accept.test.mjs",
+    "pattern": "row253 acceptance rejects bad config"
+  },
+  {
+    "id": "M16",
+    "file": "scripts/case1-accept.sh",
+    "old": "other=\"$(listeners 7331)$(listeners 7333)\"",
+    "new": "other=\"$(listeners 7331)\"",
+    "killer": "packages/cli/tests/case1-accept.test.mjs",
+    "pattern": "row253 P8 refuses"
+  },
+  {
+    "id": "M17",
+    "file": "scripts/case1-accept.sh",
+    "old": "    [[ \"$p\" =~ ^$MOSAIC_UID\\ 700\\ directory\\ [0-9]+\\ [0-9]+$ ]] || return 1",
+    "new": "    :",
+    "killer": "packages/cli/tests/case1-accept.test.mjs",
+    "pattern": "row253 P10 refuses unsafe metadata"
+  },
+  {
+    "id": "M18",
+    "file": "scripts/case1-accept.sh",
+    "old": "    [[ \"$s\" =~ ^$MOSAIC_UID\\ 600\\ socket\\ [0-9]+\\ [0-9]+$ ]] || return 1",
+    "new": "    :",
+    "killer": "packages/cli/tests/case1-accept.test.mjs",
+    "pattern": "row253 P10 refuses unsafe metadata"
+  },
+  {
+    "id": "M19",
+    "file": "scripts/case1-accept.sh",
+    "old": "[ \"$pid\" = \"$CON_PID\" ] && [ \"$uid\" = \"$MOSAIC_UID\" ]",
+    "new": "true && [ \"$uid\" = \"$MOSAIC_UID\" ]",
+    "killer": "packages/cli/tests/case1-accept.test.mjs",
+    "pattern": "row253 P10 refuses unsafe metadata"
+  },
+  {
+    "id": "M20",
+    "file": "scripts/case1-accept.sh",
+    "old": "[ \"$pid\" = \"$CON_PID\" ] && [ \"$uid\" = \"$MOSAIC_UID\" ]",
+    "new": "[ \"$pid\" = \"$CON_PID\" ] && true",
+    "killer": "packages/cli/tests/case1-accept.test.mjs",
+    "pattern": "row253 P10 refuses unsafe metadata"
+  },
+  {
+    "id": "M21",
+    "file": "scripts/case1-accept.sh",
+    "old": "pattern='^([1-9][0-9]{0,9}) ([0-9]{1,10}) ([0-9]{1,10})$'",
+    "new": "pattern='^([1-9][0-9]{0,9}) ([0-9]{1,10}) ([0-9]{1,10})'",
+    "killer": "packages/cli/tests/case1-accept.test.mjs",
+    "pattern": "row253 P10 refuses unsafe metadata"
+  },
+  {
+    "id": "M22",
+    "file": "scripts/case1-accept.sh",
+    "old": "    magic=\"$(od -An -tx1 -N4 -- \"$ROOT$real\" 2>/dev/null | tr -d ' \\n')\"\n    [ \"$magic\" = 7f454c46 ] || return 1",
+    "new": "    magic=\"$(od -An -tx1 -N4 -- \"$ROOT$real\" 2>/dev/null | tr -d ' \\n')\"\n    :",
+    "killer": "packages/cli/tests/case1-accept.test.mjs",
+    "pattern": "row253 P10 refuses unsafe metadata"
+  },
+  {
+    "id": "M23",
+    "file": "scripts/case1-accept.sh",
+    "old": "        [ \"$before\" = \"$after\" ] || why=changed",
+    "new": "        :",
+    "killer": "packages/cli/tests/case1-accept.test.mjs",
+    "pattern": "row253 P10 refuses unsafe metadata"
+  },
+  {
+    "id": "M24",
+    "file": "scripts/case2-unit.sh",
+    "old": "sudo -u \"$user\" -H env -i",
+    "new": "sudo -H env -i",
+    "killer": "packages/cli/tests/case2-unit.test.mjs",
+    "pattern": "row253 factory socket uses actual config"
+  },
+  {
+    "id": "M25",
+    "file": "scripts/case1-accept.sh",
+    "old": "tester_capture 2 4 128 \"$S_USER\" \"$S_HOME\"",
+    "new": "tester_capture 2 4 128 wrong-user \"$S_HOME\"",
+    "killer": "packages/cli/tests/case1-accept.test.mjs",
+    "pattern": "row253 socket observation uses configured root"
+  },
+  {
+    "id": "M26",
+    "file": "scripts/case1-accept.sh",
+    "old": "    [[ \"$floor\" =~ ^[0-9]{1,5}$ ]] && [ \"$floor\" -gt \"$PORT\" ] || why=floor",
+    "new": "    :",
+    "killer": "packages/cli/tests/case1-accept.test.mjs",
+    "pattern": "row253 P10 refuses unsafe metadata"
+  },
+  {
+    "id": "M27",
+    "file": "scripts/case1-accept.sh",
+    "old": "p=struct.unpack(\"3i\",s.getsockopt(socket.SOL_SOCKET,socket.SO_PEERCRED,12))",
+    "new": "import os; p=(os.getpid(),os.getuid(),os.getgid())",
+    "killer": "packages/cli/tests/case1-accept.test.mjs",
+    "pattern": "row253 socket observation uses configured root"
+  },
+  {
+    "id": "M28",
+    "file": "scripts/case2-unit.sh",
+    "old": "    [ ! -L \"$parent\" ] || { TS_REASON=symlink-parent; return 1; }",
+    "new": "    :",
+    "killer": "packages/cli/tests/case2-unit.test.mjs",
+    "pattern": "row253 installer refuses unsafe location and query facts"
+  },
+  {
+    "id": "M29",
+    "file": "scripts/case2-unit.sh",
+    "old": "        [ ! -L \"$prefix$at\" ] || { TS_REASON=symlink-component; return 1; }",
+    "new": "        :",
+    "killer": "packages/cli/tests/case2-unit.test.mjs",
+    "pattern": "row253 installer refuses unsafe location and query facts"
+  },
+  {
+    "id": "M30",
+    "file": "scripts/case2-unit.sh",
+    "old": "    case \"$data/\" in */./*|*/../*|*//* ) TS_REASON=not-normalized; return 1 ;; esac",
+    "new": "    :",
+    "killer": "packages/cli/tests/case2-unit.test.mjs",
+    "pattern": "row253 installer refuses unsafe location and query facts"
+  },
+  {
+    "id": "M31",
+    "file": "scripts/case2-unit.sh",
+    "old": "    [[ \"$1\" =~ $pattern ]] || return 1",
+    "new": "    [[ \"$1\" =~ \\\"dataRoot\\\":\\\"([^\\\"]+)\\\",\\\"socket\\\":(true|false) ]] || return 1",
+    "killer": "packages/cli/tests/case2-unit.test.mjs",
+    "pattern": "row253 config parser is strict"
+  },
+  {
+    "id": "M32",
+    "file": "scripts/case2-unit.sh",
+    "old": "[ \"$(wc -c < \"$file\")\" -le \"$maximum\" ]",
+    "new": "true",
+    "killer": "packages/cli/tests/case2-unit.test.mjs",
+    "pattern": "row253 C4 overflow is output-limit"
+  },
+  {
+    "id": "M33",
+    "file": "scripts/case2-unit.sh",
+    "old": "\"$TS_TIMEOUT\" --verbose --signal=KILL \"${outer}s\"",
+    "new": "\"$TS_TIMEOUT\" --foreground --verbose --signal=KILL \"${outer}s\"",
+    "killer": "packages/cli/tests/case2-unit.test.mjs",
+    "pattern": "row253 query reaps its group"
+  },
+  {
+    "id": "M34",
+    "file": "scripts/case2-unit.sh",
+    "old": "seconds=\"$1\" setsid_bin=\"$2\" sleep_bin=\"$3\"; shift 3",
+    "new": "seconds=\"$1\" setsid_bin=\"$2\" sleep_bin=\"$3\"; shift 3\nexec \"$@\"",
+    "killer": "packages/cli/tests/case2-unit.test.mjs",
+    "pattern": "row253 C4 signals query"
+  },
+  {
+    "id": "M35",
+    "file": "scripts/case2-unit.sh",
+    "old": "LC_ALL=C \"$TS_TIMEOUT\" --verbose --signal=KILL \"${outer}s\" \"$TS_BASH\" -c",
+    "new": "\"$TS_BASH\" -c",
+    "killer": "packages/cli/tests/case2-unit.test.mjs",
+    "pattern": "row253 C4 stalled supervisor"
+  },
+  {
+    "id": "M36",
+    "file": "scripts/case2-unit.sh",
+    "old": "            [ \"$ST_SESSION\" = \"$child\" ] || continue",
+    "new": "            [ \"$ST_SESSION\" = \"$child\" ] || continue\n            [ \"$ST_GROUP\" = \"$child\" ] || continue",
+    "killer": "packages/cli/tests/case2-unit.test.mjs",
+    "pattern": "row253 C4 member query"
+  },
+  {
+    "id": "M37",
+    "file": "scripts/case2-unit.sh",
+    "old": "    LC_ALL=C \"$TS_TIMEOUT\" --verbose --signal=KILL \"${outer}s\" \"$TS_BASH\" -c '\n        set -o pipefail\n        maximum=\"$1\"; head_bin=\"$2\"; shift 2\n        \"$@\" 2>/dev/null | \"$head_bin\" -c \"$((maximum + 1))\"\n    ' -- \"$maximum\" \"$TS_HEAD\" sudo -u \"$user\" -H env -i \"HOME=$home\" \"PATH=$path\" \"$TS_BASH\" -c \"$TESTER_SUPERVISOR\" -- \"$inner\" \"$TS_SETSID\" \"$TS_SLEEP\" \"$@\" > \"$file\" 2> \"$notice\" &\n    child=$!\n    wait \"$child\" 2>/dev/null || rc=$?\n    kill -KILL -- \"-$child\" 2>/dev/null || :\n    # Only GNU timeout and the trusted head can write this root-side channel.\n    if [ \"$rc\" = 137 ] && [[ \"$(<\"$notice\")\" == *': sending signal KILL to command '* ]]; then exit 82; fi\n    [ \"$(wc -c < \"$file\")\" -le \"$maximum\" ] || exit 83\n    [ \"$rc\" = 0 ] || { case \"$rc\" in 81|85|86|87|88) exit \"$rc\" ;; *) exit 87 ;; esac; }",
+    "new": "    LC_ALL=C \"$TS_TIMEOUT\" --verbose --signal=KILL \"${outer}s\" \"$TS_BASH\" -c '\n        set -o pipefail\n        maximum=\"$1\"; head_bin=\"$2\"; shift 2\n        \"$@\" 2>/dev/null | cat\n    ' -- \"$maximum\" \"$TS_HEAD\" sudo -u \"$user\" -H env -i \"HOME=$home\" \"PATH=$path\" \"$TS_BASH\" -c \"$TESTER_SUPERVISOR\" -- \"$inner\" \"$TS_SETSID\" \"$TS_SLEEP\" \"$@\" > \"$file\" 2> \"$notice\" &\n    child=$!\n    wait \"$child\" 2>/dev/null || rc=$?\n    kill -KILL -- \"-$child\" 2>/dev/null || :\n    # Only GNU timeout and the trusted head can write this root-side channel.\n    if [ \"$rc\" = 137 ] && [[ \"$(<\"$notice\")\" == *': sending signal KILL to command '* ]]; then exit 82; fi\n    :\n    [ \"$rc\" = 0 ] || { case \"$rc\" in 81|85|86|87|88) exit \"$rc\" ;; *) exit 87 ;; esac; }",
+    "killer": "packages/cli/tests/case2-unit.test.mjs",
+    "pattern": "row253 C4 overflow is output-limit"
+  },
+  {
+    "id": "M38",
+    "file": "scripts/case2-unit.sh",
+    "old": "\"$setsid_bin\" \"$@\" & child=$!",
+    "new": "\"$@\" & child=$!",
+    "killer": "packages/cli/tests/case2-unit.test.mjs",
+    "pattern": "row253 C4 signals query"
+  },
+  {
+    "id": "M39",
+    "file": "scripts/case2-unit.sh",
+    "old": "MOSAIC_TESTER_SUPERVISOR' || :\nset +m",
+    "new": "MOSAIC_TESTER_SUPERVISOR' || :\n# one-copy drift\nset +m",
+    "killer": "packages/cli/tests/case2-unit.test.mjs",
+    "pattern": "row253 C4 inline supervisor is byte-identical"
+  },
+  {
+    "id": "M40",
+    "file": "scripts/case2-unit.sh",
+    "old": "clean_session() {\n    local entry pid rc live until=\"\"\n    while :; do\n        live=0\n        for entry in /proc/[0-9]*/stat; do\n            pid=\"${entry%/stat}\"; pid=\"${pid##*/}\"\n            rc=0; stat_fields \"$pid\" || rc=$?\n            [ \"$rc\" != 3 ] || continue\n            [ \"$rc\" = 0 ] || return 1\n            [ \"$ST_SESSION\" = \"$child\" ] || continue\n            case \"$ST_STATE\" in Z|X) continue ;; esac\n            live=1\n            if ! kill -KILL \"$pid\" 2>/dev/null; then\n                rc=0; stat_fields \"$pid\" || rc=$?\n                [ \"$rc\" = 3 ] || { [ \"$rc\" = 0 ] && { [ \"$ST_STATE\" = Z ] || [ \"$ST_STATE\" = X ]; }; } || return 1\n            fi\n        done\n        [ \"$live\" != 0 ] || return 0\n        clock_cs || return 1\n        # Inventory pass 1 is outside the bounded confirmation/retry budget.\n        [ -n \"$until\" ] || until=$((CLOCK_CS + 25))\n        [ \"$CLOCK_CS\" -lt \"$until\" ] || return 1\n        \"$sleep_bin\" 0.01\n    done\n}\n",
+    "new": "clean_session() {\n    local entry pid rc live until\n    clock_cs || return 1\n    until=$((CLOCK_CS + 25))\n    while :; do\n        live=0\n        for entry in /proc/[0-9]*/stat; do\n            pid=\"${entry%/stat}\"; pid=\"${pid##*/}\"\n            rc=0; stat_fields \"$pid\" || rc=$?\n            [ \"$rc\" != 3 ] || continue\n            [ \"$rc\" = 0 ] || return 1\n            [ \"$ST_SESSION\" = \"$child\" ] || continue\n            case \"$ST_STATE\" in Z|X) continue ;; esac\n            live=1\n            if ! kill -KILL \"$pid\" 2>/dev/null; then\n                rc=0; stat_fields \"$pid\" || rc=$?\n                [ \"$rc\" = 3 ] || { [ \"$rc\" = 0 ] && { [ \"$ST_STATE\" = Z ] || [ \"$ST_STATE\" = X ]; }; } || return 1\n            fi\n        done\n        [ \"$live\" != 0 ] || return 0\n        clock_cs || return 1\n        # Inventory pass 1 is outside the bounded confirmation/retry budget.\n        :\n        [ \"$CLOCK_CS\" -lt \"$until\" ] || return 1\n        \"$sleep_bin\" 0.01\n    done\n}\n",
+    "killer": "packages/cli/tests/case2-unit.test.mjs",
+    "pattern": "row253 C4 cleanup budget starts after inventory pass one"
+  }
+]
@@ -0,0 +1,108 @@
+#!/usr/bin/env python3
+"""Run explicit row253 changes only under Sage's grant. --static runs no tests."""
+import argparse
+import hashlib
+import json
+import os
+from pathlib import Path
+import signal
+import subprocess
+import time
+
+HERE = Path(__file__).resolve().parent
+REPO = HERE.parents[3]
+
+def digest(data):
+    return hashlib.sha256(data).hexdigest()
+
+def busy():
+    p = subprocess.run(['bash', '/mnt/storage/scratch/sage-busy-now.sh'], text=True, capture_output=True)
+    if p.returncode or p.stdout.splitlines()[-1:] != ['CLEAR']:
+        raise RuntimeError('busy refusal: ' + p.stdout + p.stderr)
+
+def run(command, path, seconds=60):
+    busy()
+    started = time.monotonic()
+    command_file = path.with_suffix('.command.json')
+    command_file.write_text(json.dumps(command))
+    # Keep command text out of wrapper argv: the busy guard scans every argv.
+    # launch.py execs the structured command. bash owns a pipefail/tee pipeline.
+    p = subprocess.Popen(['bash','-o','pipefail','-c',
+        'python3 "$1" "$2" 2>&1 | tee "$3"', '--',str(HERE/'launch.py'),str(command_file),str(path)],
+        cwd=REPO,start_new_session=True)
+    expired = False
+    try:
+        code = p.wait(timeout=seconds)
+    except subprocess.TimeoutExpired:
+        expired = True
+        os.killpg(p.pid, signal.SIGKILL)
+        code = p.wait()
+    finally:
+        try:
+            os.killpg(p.pid, signal.SIGKILL)
+        except ProcessLookupError:
+            pass
+    return dict(code=code, timeout=expired, seconds=round(time.monotonic()-started, 3), log=str(path))
+
+def main():
+    ap = argparse.ArgumentParser()
+    ap.add_argument('--static', action='store_true')
+    ap.add_argument('--grant')
+    ap.add_argument('--out', type=Path)
+    args = ap.parse_args()
+    definitions = json.loads((HERE/'changes.json').read_text())
+    checked = []
+    for d in definitions:
+        original = (REPO/d['file']).read_bytes()
+        count = original.count(d['old'].encode())
+        if count != 1:
+            raise RuntimeError(f"{d['id']}: target occurs {count} times")
+        changed = original.replace(d['old'].encode(), d['new'].encode(), 1)
+        checked.append(dict(id=d['id'], file=d['file'], occurrences=count,
+                            before=digest(original), after=digest(changed)))
+    if args.static:
+        print(json.dumps(checked, indent=2))
+        return
+    if not args.grant or not args.out:
+        ap.error('execution needs --grant and --out')
+    if not os.environ.get('TMPDIR', '').startswith('/mnt/storage/scratch/tmp/g'):
+        raise RuntimeError('TMPDIR must be the granted scratch directory')
+    status = subprocess.check_output(['git','status','--porcelain','--untracked-files=no'],cwd=REPO)
+    args.out.mkdir(parents=True, exist_ok=True)
+    results = dict(grant=args.grant, static=checked, bases={}, changes=[])
+    failures = 0
+    for d in definitions:
+        key = d['killer']+'|'+d['pattern']
+        command = ['node','--test','--test-reporter=tap','--test-name-pattern',d['pattern'],d['killer']]
+        if key not in results['bases']:
+            base = run(command, args.out/(d['id']+'-base.log'))
+            results['bases'][key] = base
+            (args.out/'results.json').write_text(json.dumps(results,indent=2)+'\n')
+            if base['code'] != 0 or base['seconds'] > 30:
+                raise RuntimeError('base failed or exceeded 30 seconds: '+d['id'])
+        target = REPO/d['file']
+        original = target.read_bytes()
+        try:
+            target.write_bytes(original.replace(d['old'].encode(),d['new'].encode(),1))
+            pre = subprocess.run(['bash','-n',str(target)],capture_output=True)
+            if pre.returncode:
+                raise RuntimeError('invalid syntax: '+d['id'])
+            result = run(command,args.out/(d['id']+'.log'))
+            result.update(id=d['id'], base_seconds=results['bases'][key]['seconds'],
+                          outcome='killed' if result['code'] != 0 else 'survived')
+            results['changes'].append(result)
+            if result['timeout']:
+                raise RuntimeError('timeout requires Sage/Mos classification: '+d['id'])
+            if result['outcome'] != 'killed':
+                failures += 1
+        finally:
+            target.write_bytes(original)
+            assert target.read_bytes() == original
+            assert subprocess.check_output(['git','status','--porcelain','--untracked-files=no'],cwd=REPO) == status
+            (args.out/'results.json').write_text(json.dumps(results,indent=2)+'\n')
+        if failures >= 1:
+            raise RuntimeError('first unexpected failure: end the sage-2297 window')
+    print(json.dumps(results,indent=2))
+
+if __name__ == '__main__':
+    main()
@@ -0,0 +1,8 @@
+#!/usr/bin/env python3
+"""Exec a structured command without putting its text in wrapper argv."""
+import json
+import os
+import sys
+with open(sys.argv[1]) as source:
+    command = json.load(source)
+os.execvp(command[0], command)
@@ -0,0 +1,69 @@
+{
+  "grant": "sage-2279",
+  "stopped": "second unexpected fixture failure; no rerun",
+  "steps": [
+    {
+      "name": "focused/installer-red",
+      "code": 1,
+      "seconds": 0.265,
+      "expected_red": true,
+      "counts": {
+        "tests": 1,
+        "pass": 0,
+        "fail": 1,
+        "skipped": 0
+      }
+    },
+    {
+      "name": "focused/acceptance-red",
+      "code": 1,
+      "seconds": 0.215,
+      "expected_red": true,
+      "counts": {
+        "tests": 1,
+        "pass": 0,
+        "fail": 1,
+        "skipped": 0
+      }
+    },
+    {
+      "name": "focused/focused-1",
+      "code": 1,
+      "seconds": 17.303,
+      "expected_red": false,
+      "counts": {
+        "tests": 36,
+        "pass": 35,
+        "fail": 1,
+        "skipped": 0
+      }
+    },
+    {
+      "name": "green/focused-1",
+      "code": 0,
+      "seconds": 19.459,
+      "expected_red": false,
+      "counts": {
+        "tests": 36,
+        "pass": 36,
+        "fail": 0,
+        "skipped": 0
+      }
+    },
+    {
+      "name": "green/focused-2",
+      "code": 1,
+      "seconds": 41.962,
+      "expected_red": false,
+      "counts": {
+        "tests": 28,
+        "pass": 27,
+        "fail": 1,
+        "skipped": 0
+      }
+    }
+  ],
+  "sweep_count": 0,
+  "changes_run": 0,
+  "whole_suites_run": 0
+}
@@ -0,0 +1,133 @@
+✖ row253 factory socket uses actual config and target-uid query without widening hardening (24.390664ms)
+ℹ tests 1
+ℹ suites 0
+ℹ pass 0
+ℹ fail 1
+ℹ cancelled 0
+ℹ skipped 0
+ℹ todo 0
+ℹ duration_ms 186.876891
+
+✖ failing tests:
+
+test at packages/cli/tests/case2-unit.test.mjs:125:1
+✖ row253 factory socket uses actual config and target-uid query without widening hardening (24.390664ms)
+  AssertionError [ERR_ASSERTION]: case2-unit: unknown serve flag: --tester-socket
+  
+  
+  1 !== 0
+  
+      at TestContext.<anonymous> (file:///home/jwoltje/.t3/worktrees/mosaic-stack/gander-row196/packages/cli/tests/case2-unit.test.mjs:127:45)
+      at Test.runInAsyncScope (node:async_hooks:226:14)
+      at Test.run (node:internal/test_runner/test:1402:25)
+      at Test.start (node:internal/test_runner/test:1262:17)
+      at startSubtestAfterBootstrap (node:internal/test_runner/harness:387:17) {
+    generatedMessage: false,
+    code: 'ERR_ASSERTION',
+    actual: 1,
+    expected: 0,
+    operator: 'strictEqual',
+    diff: 'simple'
+  }
+✖ row253 socket observation uses configured root, metadata and the Console peer without sending bytes (23.551007ms)
+ℹ tests 1
+ℹ suites 0
+ℹ pass 0
+ℹ fail 1
+ℹ cancelled 0
+ℹ skipped 0
+ℹ todo 0
+ℹ duration_ms 127.494174
+
+✖ failing tests:
+
+test at packages/cli/tests/case1-accept.test.mjs:220:1
+✖ row253 socket observation uses configured root, metadata and the Console peer without sending bytes (23.551007ms)
+  AssertionError [ERR_ASSERTION]: case1-accept: refusing: /etc/mosaic-stack/dev.args lacks a numeric --port or --tester-port after --
+  
+  
+  2 !== 0
+  
+      at TestContext.<anonymous> (file:///home/jwoltje/.t3/worktrees/mosaic-stack/gander-row196/packages/cli/tests/case1-accept.test.mjs:225:10)
+      at Test.runInAsyncScope (node:async_hooks:226:14)
+      at Test.run (node:internal/test_runner/test:1402:25)
+      at Test.start (node:internal/test_runner/test:1262:17)
+      at startSubtestAfterBootstrap (node:internal/test_runner/harness:387:17) {
+    generatedMessage: false,
+    code: 'ERR_ASSERTION',
+    actual: 2,
+    expected: 0,
+    operator: 'strictEqual',
+    diff: 'simple'
+  }
+✔ row253 factory socket uses actual config and target-uid query without widening hardening (145.450807ms)
+✔ row253 installer refuses unsafe location and query facts before unit writes (819.380714ms)
+✔ row253 query timeout kills its process group and leaves no running child (5018.363626ms)
+✔ row253 protected homes refuse before any filesystem access (14.424895ms)
+✔ row253 query reaps its group even when a child closes stdout before the query returns (111.74091ms)
+✔ row253 config parser is strict and output capture is bounded (16.596636ms)
+✔ a clean library render writes both units 0644 with the fixed lines, and enables both then starts the bus then the Console (104.769986ms)
+✔ PATH starts with the --node directory, for a node outside the default list and for /usr/bin/node (104.638101ms)
+✔ a failed bus start refuses with the Console not started (129.922739ms)
+✔ the script never links a unit file (0.334047ms)
+✔ factory renders --pm once and one MOSAIC_CLAUDE_BIN line, and without them both tokens render empty (288.329982ms)
+✔ a re-install over running units says they are still on the old copy and must restart together, never that it started them (484.024882ms)
+✔ a re-install to another copy re-renders both units, and an edited installed unit refuses (1069.731966ms)
+✔ a template with a namespace, user or system call restriction refuses (273.736385ms)
+✔ the bus template's EnvironmentFile line must be there and point at the session env, and the Console template must have none (226.707075ms)
+✔ a template holding an unknown token, PermissionsStartOnly or a privileged Exec prefix refuses (166.978341ms)
+✔ a symlink at either unit path refuses (179.013605ms)
+✔ a --node that is relative, not root-owned or under <home> refuses (20.685359ms)
+✔ a re-install with a different --node or different serve flags refuses (515.577009ms)
+✔ an installed pair whose units name different copies refuses (290.162793ms)
+✔ a copy id that is short, uppercase, holds / or .., or names no directory refuses (35.795128ms)
+✖ library refuses a privileged-floor miss, a bad proof pair and every flag outside its set (295.169858ms)
+✔ library refuses a proof file not owned by <user>'s uid (18.009672ms)
+✔ factory refuses duplicate socket, a missing --port or --business, and each proxy flag (228.440728ms)
+✔ row253 factory refuses retired TCP and a value after the socket marker (28.788793ms)
+✔ factory refuses a --claude that is relative, not root-owned or under <home>, and a re-install with another --pm or --claude (1087.25876ms)
+✔ the precheck passes on a good host and prints free memory, without the key (124.607105ms)
+✔ the precheck refuses each failed host check (1066.073149ms)
+✔ the precheck refuses a user missing from passwd, a business file that does not load, and a symlinked run root (587.108114ms)
+✔ a bwrap that fails refuses and prints the sysctl and where bwrap is (123.872451ms)
+✔ an unprivileged port floor at or below the Console's port refuses, and so does a missing Console unit (606.804292ms)
+✔ bus.tester: library refuses it on, factory needs it on, and factory refuses a library business (547.428698ms)
+✔ the claude check runs only for a claude-code instance, and refuses a claude that appends or answers wrong (1099.09849ms)
+✔ the claude check runs the bus unit's MOSAIC_CLAUDE_BIN over claude on PATH (387.023764ms)
+✔ the session env file refuses when missing, open to others, a symlink, empty, or emptied by a later line (796.938259ms)
+✔ inside a session's sandbox a bind below 1024 fails with EACCES, and a bind on a free high port succeeds (97.958541ms)
+ℹ tests 36
+ℹ suites 0
+ℹ pass 35
+ℹ fail 1
+ℹ cancelled 0
+ℹ skipped 0
+ℹ todo 0
+ℹ duration_ms 17231.019695
+
+✖ failing tests:
+
+test at packages/cli/tests/case2-unit.test.mjs:427:1
+✖ library refuses a privileged-floor miss, a bad proof pair and every flag outside its set (295.169858ms)
+  Error: EEXIST: file already exists, mkdir '/mnt/storage/scratch/tmp/glFUYC2/case2-unit-LimIRr/home/mosaic/.mosaic-dev'
+      at mkdirSync (node:fs:1734:26)
+      at TestContext.<anonymous> (file:///home/jwoltje/.t3/worktrees/mosaic-stack/gander-row196/packages/cli/tests/case2-unit.test.mjs:465:3)
+      at Test.runInAsyncScope (node:async_hooks:226:14)
+      at Test.run (node:internal/test_runner/test:1402:25)
+      at Test.processPendingSubtests (node:internal/test_runner/test:974:18)
+      at Test.postRun (node:internal/test_runner/test:1542:19)
+      at Test.run (node:internal/test_runner/test:1467:12)
+      at async Test.processPendingSubtests (node:internal/test_runner/test:974:7) {
+    errno: -17,
+    code: 'EEXIST',
+    syscall: 'mkdir',
+    path: '/mnt/storage/scratch/tmp/glFUYC2/case2-unit-LimIRr/home/mosaic/.mosaic-dev'
+  }
+Traceback (most recent call last):
+  File "/home/jwoltje/.t3/worktrees/mosaic-stack/gander-row196/agents/gander/work/queue-253/window.py", line 76, in <module>
+    main()
+  File "/home/jwoltje/.t3/worktrees/mosaic-stack/gander-row196/agents/gander/work/queue-253/window.py", line 64, in main
+    step('focused-'+str(i+1),['node','--test',test])
+  File "/home/jwoltje/.t3/worktrees/mosaic-stack/gander-row196/agents/gander/work/queue-253/window.py", line 47, in step
+    raise RuntimeError('unexpected failure: report before continuing')
+RuntimeError: unexpected failure: report before continuing
@@ -0,0 +1,7 @@
+{
+  "file": "packages/cli/tests/case2-unit.test.mjs",
+  "before": "9f9883cd7258aa56650b14cb19acc683cfd97c0ea3a1b9adc441d1f5749ee9cb",
+  "after": "93cc7b6a534ba0fff12667f7c8957ec35349055de2428282ac94831390594649",
+  "cause": "Hub now creates dataRoot; old outside-secrets test mkdir was not idempotent. Assertion unchanged. Product bytes unchanged.",
+  "harness": "Explicit TAP reporter for machine-readable counts; green-only resume stage preserves RED records."
+}
@@ -0,0 +1 @@
+["node", "--test", "--test-name-pattern", "row253 socket observation uses configured root", "packages/cli/tests/case1-accept.test.mjs"]
@@ -0,0 +1,31 @@
+✖ row253 socket observation uses configured root, metadata and the Console peer without sending bytes (23.551007ms)
+ℹ tests 1
+ℹ suites 0
+ℹ pass 0
+ℹ fail 1
+ℹ cancelled 0
+ℹ skipped 0
+ℹ todo 0
+ℹ duration_ms 127.494174
+
+✖ failing tests:
+
+test at packages/cli/tests/case1-accept.test.mjs:220:1
+✖ row253 socket observation uses configured root, metadata and the Console peer without sending bytes (23.551007ms)
+  AssertionError [ERR_ASSERTION]: case1-accept: refusing: /etc/mosaic-stack/dev.args lacks a numeric --port or --tester-port after --
+  
+  
+  2 !== 0
+  
+      at TestContext.<anonymous> (file:///home/jwoltje/.t3/worktrees/mosaic-stack/gander-row196/packages/cli/tests/case1-accept.test.mjs:225:10)
+      at Test.runInAsyncScope (node:async_hooks:226:14)
+      at Test.run (node:internal/test_runner/test:1402:25)
+      at Test.start (node:internal/test_runner/test:1262:17)
+      at startSubtestAfterBootstrap (node:internal/test_runner/harness:387:17) {
+    generatedMessage: false,
+    code: 'ERR_ASSERTION',
+    actual: 2,
+    expected: 0,
+    operator: 'strictEqual',
+    diff: 'simple'
+  }
@@ -0,0 +1 @@
+["node", "--test", "packages/cli/tests/case2-unit.test.mjs"]
@@ -0,0 +1,63 @@
+✔ row253 factory socket uses actual config and target-uid query without widening hardening (145.450807ms)
+✔ row253 installer refuses unsafe location and query facts before unit writes (819.380714ms)
+✔ row253 query timeout kills its process group and leaves no running child (5018.363626ms)
+✔ row253 protected homes refuse before any filesystem access (14.424895ms)
+✔ row253 query reaps its group even when a child closes stdout before the query returns (111.74091ms)
+✔ row253 config parser is strict and output capture is bounded (16.596636ms)
+✔ a clean library render writes both units 0644 with the fixed lines, and enables both then starts the bus then the Console (104.769986ms)
+✔ PATH starts with the --node directory, for a node outside the default list and for /usr/bin/node (104.638101ms)
+✔ a failed bus start refuses with the Console not started (129.922739ms)
+✔ the script never links a unit file (0.334047ms)
+✔ factory renders --pm once and one MOSAIC_CLAUDE_BIN line, and without them both tokens render empty (288.329982ms)
+✔ a re-install over running units says they are still on the old copy and must restart together, never that it started them (484.024882ms)
+✔ a re-install to another copy re-renders both units, and an edited installed unit refuses (1069.731966ms)
+✔ a template with a namespace, user or system call restriction refuses (273.736385ms)
+✔ the bus template's EnvironmentFile line must be there and point at the session env, and the Console template must have none (226.707075ms)
+✔ a template holding an unknown token, PermissionsStartOnly or a privileged Exec prefix refuses (166.978341ms)
+✔ a symlink at either unit path refuses (179.013605ms)
+✔ a --node that is relative, not root-owned or under <home> refuses (20.685359ms)
+✔ a re-install with a different --node or different serve flags refuses (515.577009ms)
+✔ an installed pair whose units name different copies refuses (290.162793ms)
+✔ a copy id that is short, uppercase, holds / or .., or names no directory refuses (35.795128ms)
+✖ library refuses a privileged-floor miss, a bad proof pair and every flag outside its set (295.169858ms)
+✔ library refuses a proof file not owned by <user>'s uid (18.009672ms)
+✔ factory refuses duplicate socket, a missing --port or --business, and each proxy flag (228.440728ms)
+✔ row253 factory refuses retired TCP and a value after the socket marker (28.788793ms)
+✔ factory refuses a --claude that is relative, not root-owned or under <home>, and a re-install with another --pm or --claude (1087.25876ms)
+✔ the precheck passes on a good host and prints free memory, without the key (124.607105ms)
+✔ the precheck refuses each failed host check (1066.073149ms)
+✔ the precheck refuses a user missing from passwd, a business file that does not load, and a symlinked run root (587.108114ms)
+✔ a bwrap that fails refuses and prints the sysctl and where bwrap is (123.872451ms)
+✔ an unprivileged port floor at or below the Console's port refuses, and so does a missing Console unit (606.804292ms)
+✔ bus.tester: library refuses it on, factory needs it on, and factory refuses a library business (547.428698ms)
+✔ the claude check runs only for a claude-code instance, and refuses a claude that appends or answers wrong (1099.09849ms)
+✔ the claude check runs the bus unit's MOSAIC_CLAUDE_BIN over claude on PATH (387.023764ms)
+✔ the session env file refuses when missing, open to others, a symlink, empty, or emptied by a later line (796.938259ms)
+✔ inside a session's sandbox a bind below 1024 fails with EACCES, and a bind on a free high port succeeds (97.958541ms)
+ℹ tests 36
+ℹ suites 0
+ℹ pass 35
+ℹ fail 1
+ℹ cancelled 0
+ℹ skipped 0
+ℹ todo 0
+ℹ duration_ms 17231.019695
+
+✖ failing tests:
+
+test at packages/cli/tests/case2-unit.test.mjs:427:1
+✖ library refuses a privileged-floor miss, a bad proof pair and every flag outside its set (295.169858ms)
+  Error: EEXIST: file already exists, mkdir '/mnt/storage/scratch/tmp/glFUYC2/case2-unit-LimIRr/home/mosaic/.mosaic-dev'
+      at mkdirSync (node:fs:1734:26)
+      at TestContext.<anonymous> (file:///home/jwoltje/.t3/worktrees/mosaic-stack/gander-row196/packages/cli/tests/case2-unit.test.mjs:465:3)
+      at Test.runInAsyncScope (node:async_hooks:226:14)
+      at Test.run (node:internal/test_runner/test:1402:25)
+      at Test.processPendingSubtests (node:internal/test_runner/test:974:18)
+      at Test.postRun (node:internal/test_runner/test:1542:19)
+      at Test.run (node:internal/test_runner/test:1467:12)
+      at async Test.processPendingSubtests (node:internal/test_runner/test:974:7) {
+    errno: -17,
+    code: 'EEXIST',
+    syscall: 'mkdir',
+    path: '/mnt/storage/scratch/tmp/glFUYC2/case2-unit-LimIRr/home/mosaic/.mosaic-dev'
+  }
@@ -0,0 +1 @@
+["node", "--test", "--test-name-pattern", "row253 factory socket uses actual config", "packages/cli/tests/case2-unit.test.mjs"]
@@ -0,0 +1,31 @@
+✖ row253 factory socket uses actual config and target-uid query without widening hardening (24.390664ms)
+ℹ tests 1
+ℹ suites 0
+ℹ pass 0
+ℹ fail 1
+ℹ cancelled 0
+ℹ skipped 0
+ℹ todo 0
+ℹ duration_ms 186.876891
+
+✖ failing tests:
+
+test at packages/cli/tests/case2-unit.test.mjs:125:1
+✖ row253 factory socket uses actual config and target-uid query without widening hardening (24.390664ms)
+  AssertionError [ERR_ASSERTION]: case2-unit: unknown serve flag: --tester-socket
+  
+  
+  1 !== 0
+  
+      at TestContext.<anonymous> (file:///home/jwoltje/.t3/worktrees/mosaic-stack/gander-row196/packages/cli/tests/case2-unit.test.mjs:127:45)
+      at Test.runInAsyncScope (node:async_hooks:226:14)
+      at Test.run (node:internal/test_runner/test:1402:25)
+      at Test.start (node:internal/test_runner/test:1262:17)
+      at startSubtestAfterBootstrap (node:internal/test_runner/harness:387:17) {
+    generatedMessage: false,
+    code: 'ERR_ASSERTION',
+    actual: 1,
+    expected: 0,
+    operator: 'strictEqual',
+    diff: 'simple'
+  }
@@ -0,0 +1,33 @@
+{
+  "grant": "sage-2279",
+  "stage": "focused",
+  "steps": [
+    {
+      "code": 1,
+      "timeout": false,
+      "seconds": 0.265,
+      "log": "agents/gander/work/queue-253/run1/focused/installer-red.log",
+      "name": "installer-red",
+      "expected_red": true,
+      "counts": {}
+    },
+    {
+      "code": 1,
+      "timeout": false,
+      "seconds": 0.215,
+      "log": "agents/gander/work/queue-253/run1/focused/acceptance-red.log",
+      "name": "acceptance-red",
+      "expected_red": true,
+      "counts": {}
+    },
+    {
+      "code": 1,
+      "timeout": false,
+      "seconds": 17.303,
+      "log": "agents/gander/work/queue-253/run1/focused/focused-1.log",
+      "name": "focused-1",
+      "expected_red": false,
+      "counts": {}
+    }
+  ]
+}
@@ -0,0 +1,432 @@
+TAP version 13
+# Subtest: row253 factory socket uses actual config and target-uid query without widening hardening
+ok 1 - row253 factory socket uses actual config and target-uid query without widening hardening
+  ---
+  duration_ms: 216.869128
+  type: 'test'
+  ...
+# Subtest: row253 installer refuses unsafe location and query facts before unit writes
+ok 2 - row253 installer refuses unsafe location and query facts before unit writes
+  ---
+  duration_ms: 1037.060467
+  type: 'test'
+  ...
+# Subtest: row253 query timeout kills its process group and leaves no running child
+ok 3 - row253 query timeout kills its process group and leaves no running child
+  ---
+  duration_ms: 5027.077544
+  type: 'test'
+  ...
+# Subtest: row253 protected homes refuse before any filesystem access
+ok 4 - row253 protected homes refuse before any filesystem access
+  ---
+  duration_ms: 14.602145
+  type: 'test'
+  ...
+# Subtest: row253 query reaps its group even when a child closes stdout before the query returns
+ok 5 - row253 query reaps its group even when a child closes stdout before the query returns
+  ---
+  duration_ms: 152.685734
+  type: 'test'
+  ...
+# Subtest: row253 config parser is strict and output capture is bounded
+ok 6 - row253 config parser is strict and output capture is bounded
+  ---
+  duration_ms: 26.669467
+  type: 'test'
+  ...
+# Subtest: a clean library render writes both units 0644 with the fixed lines, and enables both then starts the bus then the Console
+ok 7 - a clean library render writes both units 0644 with the fixed lines, and enables both then starts the bus then the Console
+  ---
+  duration_ms: 141.129141
+  type: 'test'
+  ...
+# Subtest: PATH starts with the --node directory, for a node outside the default list and for /usr/bin/node
+ok 8 - PATH starts with the --node directory, for a node outside the default list and for /usr/bin/node
+  ---
+  duration_ms: 145.189241
+  type: 'test'
+  ...
+# Subtest: a failed bus start refuses with the Console not started
+ok 9 - a failed bus start refuses with the Console not started
+  ---
+  duration_ms: 120.050347
+  type: 'test'
+  ...
+# Subtest: the script never links a unit file
+ok 10 - the script never links a unit file
+  ---
+  duration_ms: 0.293936
+  type: 'test'
+  ...
+# Subtest: factory renders --pm once and one MOSAIC_CLAUDE_BIN line, and without them both tokens render empty
+ok 11 - factory renders --pm once and one MOSAIC_CLAUDE_BIN line, and without them both tokens render empty
+  ---
+  duration_ms: 358.790337
+  type: 'test'
+  ...
+# Subtest: a re-install over running units says they are still on the old copy and must restart together, never that it started them
+ok 12 - a re-install over running units says they are still on the old copy and must restart together, never that it started them
+  ---
+  duration_ms: 583.217218
+  type: 'test'
+  ...
+# Subtest: a re-install to another copy re-renders both units, and an edited installed unit refuses
+ok 13 - a re-install to another copy re-renders both units, and an edited installed unit refuses
+  ---
+  duration_ms: 1346.293893
+  type: 'test'
+  ...
+# Subtest: a template with a namespace, user or system call restriction refuses
+ok 14 - a template with a namespace, user or system call restriction refuses
+  ---
+  duration_ms: 335.885968
+  type: 'test'
+  ...
+# Subtest: the bus template's EnvironmentFile line must be there and point at the session env, and the Console template must have none
+ok 15 - the bus template's EnvironmentFile line must be there and point at the session env, and the Console template must have none
+  ---
+  duration_ms: 261.193104
+  type: 'test'
+  ...
+# Subtest: a template holding an unknown token, PermissionsStartOnly or a privileged Exec prefix refuses
+ok 16 - a template holding an unknown token, PermissionsStartOnly or a privileged Exec prefix refuses
+  ---
+  duration_ms: 217.834215
+  type: 'test'
+  ...
+# Subtest: a symlink at either unit path refuses
+ok 17 - a symlink at either unit path refuses
+  ---
+  duration_ms: 292.144849
+  type: 'test'
+  ...
+# Subtest: a --node that is relative, not root-owned or under <home> refuses
+ok 18 - a --node that is relative, not root-owned or under <home> refuses
+  ---
+  duration_ms: 34.702768
+  type: 'test'
+  ...
+# Subtest: a re-install with a different --node or different serve flags refuses
+ok 19 - a re-install with a different --node or different serve flags refuses
+  ---
+  duration_ms: 862.096949
+  type: 'test'
+  ...
+# Subtest: an installed pair whose units name different copies refuses
+ok 20 - an installed pair whose units name different copies refuses
+  ---
+  duration_ms: 343.53779
+  type: 'test'
+  ...
+# Subtest: a copy id that is short, uppercase, holds / or .., or names no directory refuses
+ok 21 - a copy id that is short, uppercase, holds / or .., or names no directory refuses
+  ---
+  duration_ms: 37.449488
+  type: 'test'
+  ...
+# Subtest: library refuses a privileged-floor miss, a bad proof pair and every flag outside its set
+ok 22 - library refuses a privileged-floor miss, a bad proof pair and every flag outside its set
+  ---
+  duration_ms: 510.984644
+  type: 'test'
+  ...
+# Subtest: library refuses a proof file not owned by <user>'s uid
+ok 23 - library refuses a proof file not owned by <user>'s uid
+  ---
+  duration_ms: 30.321206
+  type: 'test'
+  ...
+# Subtest: factory refuses duplicate socket, a missing --port or --business, and each proxy flag
+ok 24 - factory refuses duplicate socket, a missing --port or --business, and each proxy flag
+  ---
+  duration_ms: 306.036125
+  type: 'test'
+  ...
+# Subtest: row253 factory refuses retired TCP and a value after the socket marker
+ok 25 - row253 factory refuses retired TCP and a value after the socket marker
+  ---
+  duration_ms: 45.290287
+  type: 'test'
+  ...
+# Subtest: factory refuses a --claude that is relative, not root-owned or under <home>, and a re-install with another --pm or --claude
+ok 26 - factory refuses a --claude that is relative, not root-owned or under <home>, and a re-install with another --pm or --claude
+  ---
+  duration_ms: 837.29654
+  type: 'test'
+  ...
+# Subtest: the precheck passes on a good host and prints free memory, without the key
+ok 27 - the precheck passes on a good host and prints free memory, without the key
+  ---
+  duration_ms: 127.505732
+  type: 'test'
+  ...
+# Subtest: the precheck refuses each failed host check
+ok 28 - the precheck refuses each failed host check
+  ---
+  duration_ms: 1209.781622
+  type: 'test'
+  ...
+# Subtest: the precheck refuses a user missing from passwd, a business file that does not load, and a symlinked run root
+ok 29 - the precheck refuses a user missing from passwd, a business file that does not load, and a symlinked run root
+  ---
+  duration_ms: 686.996596
+  type: 'test'
+  ...
+# Subtest: a bwrap that fails refuses and prints the sysctl and where bwrap is
+ok 30 - a bwrap that fails refuses and prints the sysctl and where bwrap is
+  ---
+  duration_ms: 147.551012
+  type: 'test'
+  ...
+# Subtest: an unprivileged port floor at or below the Console's port refuses, and so does a missing Console unit
+ok 31 - an unprivileged port floor at or below the Console's port refuses, and so does a missing Console unit
+  ---
+  duration_ms: 729.482735
+  type: 'test'
+  ...
+# Subtest: bus.tester: library refuses it on, factory needs it on, and factory refuses a library business
+ok 32 - bus.tester: library refuses it on, factory needs it on, and factory refuses a library business
+  ---
+  duration_ms: 570.789238
+  type: 'test'
+  ...
+# Subtest: the claude check runs only for a claude-code instance, and refuses a claude that appends or answers wrong
+ok 33 - the claude check runs only for a claude-code instance, and refuses a claude that appends or answers wrong
+  ---
+  duration_ms: 1142.885248
+  type: 'test'
+  ...
+# Subtest: the claude check runs the bus unit's MOSAIC_CLAUDE_BIN over claude on PATH
+ok 34 - the claude check runs the bus unit's MOSAIC_CLAUDE_BIN over claude on PATH
+  ---
+  duration_ms: 383.125949
+  type: 'test'
+  ...
+# Subtest: the session env file refuses when missing, open to others, a symlink, empty, or emptied by a later line
+ok 35 - the session env file refuses when missing, open to others, a symlink, empty, or emptied by a later line
+  ---
+  duration_ms: 799.735416
+  type: 'test'
+  ...
+# Subtest: inside a session's sandbox a bind below 1024 fails with EACCES, and a bind on a free high port succeeds
+ok 36 - inside a session's sandbox a bind below 1024 fails with EACCES, and a bind on a free high port succeeds
+  ---
+  duration_ms: 98.89618
+  type: 'test'
+  ...
+1..36
+# tests 36
+# suites 0
+# pass 36
+# fail 0
+# cancelled 0
+# skipped 0
+# todo 0
+# duration_ms 19359.125841
+TAP version 13
+# Subtest: row253 socket observation uses configured root, metadata and the Console peer without sending bytes
+ok 1 - row253 socket observation uses configured root, metadata and the Console peer without sending bytes
+  ---
+  duration_ms: 457.237158
+  type: 'test'
+  ...
+# Subtest: row253 P10 refuses unsafe metadata, wrong peers and an unsafe Python without claiming closure
+ok 2 - row253 P10 refuses unsafe metadata, wrong peers and an unsafe Python without claiming closure
+  ---
+  duration_ms: 8825.596429
+  type: 'test'
+  ...
+# Subtest: row253 acceptance rejects bad config and unsupported copies before talk
+ok 3 - row253 acceptance rejects bad config and unsupported copies before talk
+  ---
+  duration_ms: 405.608885
+  type: 'test'
+  ...
+# Subtest: row253 stalled peer observation ends within its bound without leaving a reader
+ok 4 - row253 stalled peer observation ends within its bound without leaving a reader
+  ---
+  duration_ms: 3417.061486
+  type: 'test'
+  ...
+# Subtest: row253 P8 refuses both retired TCP and board listeners
+ok 5 - row253 P8 refuses both retired TCP and board listeners
+  ---
+  duration_ms: 931.562888
+  type: 'test'
+  ...
+# Subtest: row 195 accept: every check passing exits 0, with each P mark and counts that match the lines
+ok 6 - row 195 accept: every check passing exits 0, with each P mark and counts that match the lines
+  ---
+  duration_ms: 423.786569
+  type: 'test'
+  ...
+# Subtest: row 195 accept: exits 1 with each F check failing alone, and its line names it
+ok 7 - row 195 accept: exits 1 with each F check failing alone, and its line names it
+  ---
+  duration_ms: 4820.838663
+  type: 'test'
+  ...
+# Subtest: row 195 accept: F3 fails on exit 0 with no reply line, and its evidence takes talk's error
+ok 8 - row 195 accept: F3 fails on exit 0 with no reply line, and its evidence takes talk's error
+  ---
+  duration_ms: 854.517542
+  type: 'test'
+  ...
+# Subtest: row 195 accept: F1 fails on a unit that isn't active or isn't User=mosaic
+ok 9 - row 195 accept: F1 fails on a unit that isn't active or isn't User=mosaic
+  ---
+  duration_ms: 880.2515
+  type: 'test'
+  ...
+# Subtest: row 195 accept: F2 fails when healthz doesn't answer and when another pid holds the port
+ok 10 - row 195 accept: F2 fails when healthz doesn't answer and when another pid holds the port
+  ---
+  duration_ms: 923.143848
+  type: 'test'
+  ...
+# Subtest: row 195 accept: F5 fails on unpriv_bwrap (enforce), on complain and on a trailing space
+ok 11 - row 195 accept: F5 fails on unpriv_bwrap (enforce), on complain and on a trailing space
+  ---
+  duration_ms: 1611.055796
+  type: 'test'
+  ...
+# Subtest: row 195 accept: F5 fails with no bwrap of mosaic's, and passes on comm alone
+ok 12 - row 195 accept: F5 fails with no bwrap of mosaic's, and passes on comm alone
+  ---
+  duration_ms: 772.495962
+  type: 'test'
+  ...
+# Subtest: row 195 accept: F6 fails on a stub that prints nothing, on a path outside claude-<pin> and on a .. segment
+ok 13 - row 195 accept: F6 fails on a stub that prints nothing, on a path outside claude-<pin> and on a .. segment
+  ---
+  duration_ms: 1208.609458
+  type: 'test'
+  ...
+# Subtest: row 195 accept: F7 fails on two live PM launches, one for another business, and no launch.by
+ok 14 - row 195 accept: F7 fails on two live PM launches, one for another business, and no launch.by
+  ---
+  duration_ms: 1277.66317
+  type: 'test'
+  ...
+# Subtest: row 195 accept: F8 fails on 0640, on another owner and on a symlink, and never prints the credential
+ok 15 - row 195 accept: F8 fails on 0640, on another owner and on a symlink, and never prints the credential
+  ---
+  duration_ms: 1323.209668
+  type: 'test'
+  ...
+# Subtest: row 195 accept: F9 fails on another owner, a group-writable mode and a number for the flag
+ok 16 - row 195 accept: F9 fails on another owner, a group-writable mode and a number for the flag
+  ---
+  duration_ms: 1223.483541
+  type: 'test'
+  ...
+# Subtest: row 195 accept: F9 won't run --node as root off the pin path or with a writable directory above it
+ok 17 - row 195 accept: F9 won't run --node as root off the pin path or with a writable directory above it
+  ---
+  duration_ms: 1110.862644
+  type: 'test'
+  ...
+# Subtest: row 195 accept: F11 fails on one *.json under discord/ and passes on an empty directory
+ok 18 - row 195 accept: F11 fails on one *.json under discord/ and passes on an empty directory
+  ---
+  duration_ms: 916.072105
+  type: 'test'
+  ...
+# Subtest: row 195 accept: each P check reports unnamed on its fault, and the exit stays 0
+ok 19 - row 195 accept: each P check reports unnamed on its fault, and the exit stays 0
+  ---
+  duration_ms: 4105.537374
+  type: 'test'
+  ...
+# Subtest: row 195 accept: P2 is unnamed with a supplementary group, and P5 names docker
+ok 20 - row 195 accept: P2 is unnamed with a supplementary group, and P5 names docker
+  ---
+  duration_ms: 1015.859889
+  type: 'test'
+  ...
+# Subtest: row 195 accept: P5 is closed with no jarvis account, and P2 with an empty authorized_keys
+ok 21 - row 195 accept: P5 is closed with no jarvis account, and P2 with an empty authorized_keys
+  ---
+  duration_ms: 400.087324
+  type: 'test'
+  ...
+# Subtest: row 195 accept: P9 is unnamed once for each item missing
+ok 22 - row 195 accept: P9 is unnamed once for each item missing
+  ---
+  duration_ms: 2710.187272
+  type: 'test'
+  ...
+# Subtest: row253 accept: P10 fails its observation with another peer; P11 with the unit disabled
+ok 23 - row253 accept: P10 fails its observation with another peer; P11 with the unit disabled
+  ---
+  duration_ms: 800.289163
+  type: 'test'
+  ...
+# Subtest: row 195 accept: every P check unnamed together still exits 0
+ok 24 - row 195 accept: every P check unnamed together still exits 0
+  ---
+  duration_ms: 348.312367
+  type: 'test'
+  ...
+# Subtest: row 195 accept: a bad args file refuses with exit 2 before any check, each for its own reason
+ok 25 - row 195 accept: a bad args file refuses with exit 2 before any check, each for its own reason
+  ---
+  duration_ms: 101.428549
+  type: 'test'
+  ...
+# Subtest: row 195 accept: usage errors and a run without --root as a user exit 2
+ok 26 - row 195 accept: usage errors and a run without --root as a user exit 2
+  ---
+  duration_ms: 11.252533
+  type: 'test'
+  ...
+# Subtest: row 195 accept: every in-instance call goes through sudo -u mosaic -H env PATH=<node dir>:...
+not ok 27 - row 195 accept: every in-instance call goes through sudo -u mosaic -H env PATH=<node dir>:...
+  ---
+  duration_ms: 448.51281
+  type: 'test'
+  location: '/home/jwoltje/.t3/worktrees/mosaic-stack/gander-row196/packages/cli/tests/case1-accept.test.mjs:625:1'
+  failureType: 'testCodeFailure'
+  error: |-
+    The input did not match the regular expression /^talk chief case1-accept-[0-9a-f]{12}: .* --business mosaic-stack --tester --wait 300$/. Input:
+    
+    'talk chief case1-accept-7f454c46: this is the Case 1 acceptance; reply with one short line. --business mosaic-stack --tester --wait 300'
+    
+  code: 'ERR_ASSERTION'
+  name: 'AssertionError'
+  expected:
+  actual: 'talk chief case1-accept-7f454c46: this is the Case 1 acceptance; reply with one short line. --business mosaic-stack --tester --wait 300'
+  operator: 'match'
+  stack: |-
+    TestContext.<anonymous> (file:///home/jwoltje/.t3/worktrees/mosaic-stack/gander-row196/packages/cli/tests/case1-accept.test.mjs:641:10)
+    Test.runInAsyncScope (node:async_hooks:226:14)
+    Test.run (node:internal/test_runner/test:1402:25)
+    Test.processPendingSubtests (node:internal/test_runner/test:974:18)
+    Test.postRun (node:internal/test_runner/test:1542:19)
+    Test.run (node:internal/test_runner/test:1467:12)
+    async Test.processPendingSubtests (node:internal/test_runner/test:974:7)
+  ...
+# Subtest: row 195 accept: the host check runs with --check and never --enforce
+ok 28 - row 195 accept: the host check runs with --check and never --enforce
+  ---
+  duration_ms: 421.488991
+  type: 'test'
+  ...
+1..28
+# tests 28
+# suites 0
+# pass 27
+# fail 1
+# cancelled 0
+# skipped 0
+# todo 0
+# duration_ms 41874.061683
+Traceback (most recent call last):
+  File "/home/jwoltje/.t3/worktrees/mosaic-stack/gander-row196/agents/gander/work/queue-253/window.py", line 78, in <module>
+    main()
+  File "/home/jwoltje/.t3/worktrees/mosaic-stack/gander-row196/agents/gander/work/queue-253/window.py", line 66, in main
+    step('focused-'+str(i+1),['node','--test','--test-reporter=tap',test])
+  File "/home/jwoltje/.t3/worktrees/mosaic-stack/gander-row196/agents/gander/work/queue-253/window.py", line 47, in step
+    raise RuntimeError('unexpected failure: report before continuing')
+RuntimeError: unexpected failure: report before continuing
@@ -0,0 +1 @@
+["node", "--test", "--test-reporter=tap", "packages/cli/tests/case2-unit.test.mjs"]
@@ -0,0 +1,226 @@
+TAP version 13
+# Subtest: row253 factory socket uses actual config and target-uid query without widening hardening
+ok 1 - row253 factory socket uses actual config and target-uid query without widening hardening
+  ---
+  duration_ms: 216.869128
+  type: 'test'
+  ...
+# Subtest: row253 installer refuses unsafe location and query facts before unit writes
+ok 2 - row253 installer refuses unsafe location and query facts before unit writes
+  ---
+  duration_ms: 1037.060467
+  type: 'test'
+  ...
+# Subtest: row253 query timeout kills its process group and leaves no running child
+ok 3 - row253 query timeout kills its process group and leaves no running child
+  ---
+  duration_ms: 5027.077544
+  type: 'test'
+  ...
+# Subtest: row253 protected homes refuse before any filesystem access
+ok 4 - row253 protected homes refuse before any filesystem access
+  ---
+  duration_ms: 14.602145
+  type: 'test'
+  ...
+# Subtest: row253 query reaps its group even when a child closes stdout before the query returns
+ok 5 - row253 query reaps its group even when a child closes stdout before the query returns
+  ---
+  duration_ms: 152.685734
+  type: 'test'
+  ...
+# Subtest: row253 config parser is strict and output capture is bounded
+ok 6 - row253 config parser is strict and output capture is bounded
+  ---
+  duration_ms: 26.669467
+  type: 'test'
+  ...
+# Subtest: a clean library render writes both units 0644 with the fixed lines, and enables both then starts the bus then the Console
+ok 7 - a clean library render writes both units 0644 with the fixed lines, and enables both then starts the bus then the Console
+  ---
+  duration_ms: 141.129141
+  type: 'test'
+  ...
+# Subtest: PATH starts with the --node directory, for a node outside the default list and for /usr/bin/node
+ok 8 - PATH starts with the --node directory, for a node outside the default list and for /usr/bin/node
+  ---
+  duration_ms: 145.189241
+  type: 'test'
+  ...
+# Subtest: a failed bus start refuses with the Console not started
+ok 9 - a failed bus start refuses with the Console not started
+  ---
+  duration_ms: 120.050347
+  type: 'test'
+  ...
+# Subtest: the script never links a unit file
+ok 10 - the script never links a unit file
+  ---
+  duration_ms: 0.293936
+  type: 'test'
+  ...
+# Subtest: factory renders --pm once and one MOSAIC_CLAUDE_BIN line, and without them both tokens render empty
+ok 11 - factory renders --pm once and one MOSAIC_CLAUDE_BIN line, and without them both tokens render empty
+  ---
+  duration_ms: 358.790337
+  type: 'test'
+  ...
+# Subtest: a re-install over running units says they are still on the old copy and must restart together, never that it started them
+ok 12 - a re-install over running units says they are still on the old copy and must restart together, never that it started them
+  ---
+  duration_ms: 583.217218
+  type: 'test'
+  ...
+# Subtest: a re-install to another copy re-renders both units, and an edited installed unit refuses
+ok 13 - a re-install to another copy re-renders both units, and an edited installed unit refuses
+  ---
+  duration_ms: 1346.293893
+  type: 'test'
+  ...
+# Subtest: a template with a namespace, user or system call restriction refuses
+ok 14 - a template with a namespace, user or system call restriction refuses
+  ---
+  duration_ms: 335.885968
+  type: 'test'
+  ...
+# Subtest: the bus template's EnvironmentFile line must be there and point at the session env, and the Console template must have none
+ok 15 - the bus template's EnvironmentFile line must be there and point at the session env, and the Console template must have none
+  ---
+  duration_ms: 261.193104
+  type: 'test'
+  ...
+# Subtest: a template holding an unknown token, PermissionsStartOnly or a privileged Exec prefix refuses
+ok 16 - a template holding an unknown token, PermissionsStartOnly or a privileged Exec prefix refuses
+  ---
+  duration_ms: 217.834215
+  type: 'test'
+  ...
+# Subtest: a symlink at either unit path refuses
+ok 17 - a symlink at either unit path refuses
+  ---
+  duration_ms: 292.144849
+  type: 'test'
+  ...
+# Subtest: a --node that is relative, not root-owned or under <home> refuses
+ok 18 - a --node that is relative, not root-owned or under <home> refuses
+  ---
+  duration_ms: 34.702768
+  type: 'test'
+  ...
+# Subtest: a re-install with a different --node or different serve flags refuses
+ok 19 - a re-install with a different --node or different serve flags refuses
+  ---
+  duration_ms: 862.096949
+  type: 'test'
+  ...
+# Subtest: an installed pair whose units name different copies refuses
+ok 20 - an installed pair whose units name different copies refuses
+  ---
+  duration_ms: 343.53779
+  type: 'test'
+  ...
+# Subtest: a copy id that is short, uppercase, holds / or .., or names no directory refuses
+ok 21 - a copy id that is short, uppercase, holds / or .., or names no directory refuses
+  ---
+  duration_ms: 37.449488
+  type: 'test'
+  ...
+# Subtest: library refuses a privileged-floor miss, a bad proof pair and every flag outside its set
+ok 22 - library refuses a privileged-floor miss, a bad proof pair and every flag outside its set
+  ---
+  duration_ms: 510.984644
+  type: 'test'
+  ...
+# Subtest: library refuses a proof file not owned by <user>'s uid
+ok 23 - library refuses a proof file not owned by <user>'s uid
+  ---
+  duration_ms: 30.321206
+  type: 'test'
+  ...
+# Subtest: factory refuses duplicate socket, a missing --port or --business, and each proxy flag
+ok 24 - factory refuses duplicate socket, a missing --port or --business, and each proxy flag
+  ---
+  duration_ms: 306.036125
+  type: 'test'
+  ...
+# Subtest: row253 factory refuses retired TCP and a value after the socket marker
+ok 25 - row253 factory refuses retired TCP and a value after the socket marker
+  ---
+  duration_ms: 45.290287
+  type: 'test'
+  ...
+# Subtest: factory refuses a --claude that is relative, not root-owned or under <home>, and a re-install with another --pm or --claude
+ok 26 - factory refuses a --claude that is relative, not root-owned or under <home>, and a re-install with another --pm or --claude
+  ---
+  duration_ms: 837.29654
+  type: 'test'
+  ...
+# Subtest: the precheck passes on a good host and prints free memory, without the key
+ok 27 - the precheck passes on a good host and prints free memory, without the key
+  ---
+  duration_ms: 127.505732
+  type: 'test'
+  ...
+# Subtest: the precheck refuses each failed host check
+ok 28 - the precheck refuses each failed host check
+  ---
+  duration_ms: 1209.781622
+  type: 'test'
+  ...
+# Subtest: the precheck refuses a user missing from passwd, a business file that does not load, and a symlinked run root
+ok 29 - the precheck refuses a user missing from passwd, a business file that does not load, and a symlinked run root
+  ---
+  duration_ms: 686.996596
+  type: 'test'
+  ...
+# Subtest: a bwrap that fails refuses and prints the sysctl and where bwrap is
+ok 30 - a bwrap that fails refuses and prints the sysctl and where bwrap is
+  ---
+  duration_ms: 147.551012
+  type: 'test'
+  ...
+# Subtest: an unprivileged port floor at or below the Console's port refuses, and so does a missing Console unit
+ok 31 - an unprivileged port floor at or below the Console's port refuses, and so does a missing Console unit
+  ---
+  duration_ms: 729.482735
+  type: 'test'
+  ...
+# Subtest: bus.tester: library refuses it on, factory needs it on, and factory refuses a library business
+ok 32 - bus.tester: library refuses it on, factory needs it on, and factory refuses a library business
+  ---
+  duration_ms: 570.789238
+  type: 'test'
+  ...
+# Subtest: the claude check runs only for a claude-code instance, and refuses a claude that appends or answers wrong
+ok 33 - the claude check runs only for a claude-code instance, and refuses a claude that appends or answers wrong
+  ---
+  duration_ms: 1142.885248
+  type: 'test'
+  ...
+# Subtest: the claude check runs the bus unit's MOSAIC_CLAUDE_BIN over claude on PATH
+ok 34 - the claude check runs the bus unit's MOSAIC_CLAUDE_BIN over claude on PATH
+  ---
+  duration_ms: 383.125949
+  type: 'test'
+  ...
+# Subtest: the session env file refuses when missing, open to others, a symlink, empty, or emptied by a later line
+ok 35 - the session env file refuses when missing, open to others, a symlink, empty, or emptied by a later line
+  ---
+  duration_ms: 799.735416
+  type: 'test'
+  ...
+# Subtest: inside a session's sandbox a bind below 1024 fails with EACCES, and a bind on a free high port succeeds
+ok 36 - inside a session's sandbox a bind below 1024 fails with EACCES, and a bind on a free high port succeeds
+  ---
+  duration_ms: 98.89618
+  type: 'test'
+  ...
+1..36
+# tests 36
+# suites 0
+# pass 36
+# fail 0
+# cancelled 0
+# skipped 0
+# todo 0
+# duration_ms 19359.125841
@@ -0,0 +1 @@
+["node", "--test", "--test-reporter=tap", "packages/cli/tests/case1-accept.test.mjs"]
@@ -0,0 +1,198 @@
+TAP version 13
+# Subtest: row253 socket observation uses configured root, metadata and the Console peer without sending bytes
+ok 1 - row253 socket observation uses configured root, metadata and the Console peer without sending bytes
+  ---
+  duration_ms: 457.237158
+  type: 'test'
+  ...
+# Subtest: row253 P10 refuses unsafe metadata, wrong peers and an unsafe Python without claiming closure
+ok 2 - row253 P10 refuses unsafe metadata, wrong peers and an unsafe Python without claiming closure
+  ---
+  duration_ms: 8825.596429
+  type: 'test'
+  ...
+# Subtest: row253 acceptance rejects bad config and unsupported copies before talk
+ok 3 - row253 acceptance rejects bad config and unsupported copies before talk
+  ---
+  duration_ms: 405.608885
+  type: 'test'
+  ...
+# Subtest: row253 stalled peer observation ends within its bound without leaving a reader
+ok 4 - row253 stalled peer observation ends within its bound without leaving a reader
+  ---
+  duration_ms: 3417.061486
+  type: 'test'
+  ...
+# Subtest: row253 P8 refuses both retired TCP and board listeners
+ok 5 - row253 P8 refuses both retired TCP and board listeners
+  ---
+  duration_ms: 931.562888
+  type: 'test'
+  ...
+# Subtest: row 195 accept: every check passing exits 0, with each P mark and counts that match the lines
+ok 6 - row 195 accept: every check passing exits 0, with each P mark and counts that match the lines
+  ---
+  duration_ms: 423.786569
+  type: 'test'
+  ...
+# Subtest: row 195 accept: exits 1 with each F check failing alone, and its line names it
+ok 7 - row 195 accept: exits 1 with each F check failing alone, and its line names it
+  ---
+  duration_ms: 4820.838663
+  type: 'test'
+  ...
+# Subtest: row 195 accept: F3 fails on exit 0 with no reply line, and its evidence takes talk's error
+ok 8 - row 195 accept: F3 fails on exit 0 with no reply line, and its evidence takes talk's error
+  ---
+  duration_ms: 854.517542
+  type: 'test'
+  ...
+# Subtest: row 195 accept: F1 fails on a unit that isn't active or isn't User=mosaic
+ok 9 - row 195 accept: F1 fails on a unit that isn't active or isn't User=mosaic
+  ---
+  duration_ms: 880.2515
+  type: 'test'
+  ...
+# Subtest: row 195 accept: F2 fails when healthz doesn't answer and when another pid holds the port
+ok 10 - row 195 accept: F2 fails when healthz doesn't answer and when another pid holds the port
+  ---
+  duration_ms: 923.143848
+  type: 'test'
+  ...
+# Subtest: row 195 accept: F5 fails on unpriv_bwrap (enforce), on complain and on a trailing space
+ok 11 - row 195 accept: F5 fails on unpriv_bwrap (enforce), on complain and on a trailing space
+  ---
+  duration_ms: 1611.055796
+  type: 'test'
+  ...
+# Subtest: row 195 accept: F5 fails with no bwrap of mosaic's, and passes on comm alone
+ok 12 - row 195 accept: F5 fails with no bwrap of mosaic's, and passes on comm alone
+  ---
+  duration_ms: 772.495962
+  type: 'test'
+  ...
+# Subtest: row 195 accept: F6 fails on a stub that prints nothing, on a path outside claude-<pin> and on a .. segment
+ok 13 - row 195 accept: F6 fails on a stub that prints nothing, on a path outside claude-<pin> and on a .. segment
+  ---
+  duration_ms: 1208.609458
+  type: 'test'
+  ...
+# Subtest: row 195 accept: F7 fails on two live PM launches, one for another business, and no launch.by
+ok 14 - row 195 accept: F7 fails on two live PM launches, one for another business, and no launch.by
+  ---
+  duration_ms: 1277.66317
+  type: 'test'
+  ...
+# Subtest: row 195 accept: F8 fails on 0640, on another owner and on a symlink, and never prints the credential
+ok 15 - row 195 accept: F8 fails on 0640, on another owner and on a symlink, and never prints the credential
+  ---
+  duration_ms: 1323.209668
+  type: 'test'
+  ...
+# Subtest: row 195 accept: F9 fails on another owner, a group-writable mode and a number for the flag
+ok 16 - row 195 accept: F9 fails on another owner, a group-writable mode and a number for the flag
+  ---
+  duration_ms: 1223.483541
+  type: 'test'
+  ...
+# Subtest: row 195 accept: F9 won't run --node as root off the pin path or with a writable directory above it
+ok 17 - row 195 accept: F9 won't run --node as root off the pin path or with a writable directory above it
+  ---
+  duration_ms: 1110.862644
+  type: 'test'
+  ...
+# Subtest: row 195 accept: F11 fails on one *.json under discord/ and passes on an empty directory
+ok 18 - row 195 accept: F11 fails on one *.json under discord/ and passes on an empty directory
+  ---
+  duration_ms: 916.072105
+  type: 'test'
+  ...
+# Subtest: row 195 accept: each P check reports unnamed on its fault, and the exit stays 0
+ok 19 - row 195 accept: each P check reports unnamed on its fault, and the exit stays 0
+  ---
+  duration_ms: 4105.537374
+  type: 'test'
+  ...
+# Subtest: row 195 accept: P2 is unnamed with a supplementary group, and P5 names docker
+ok 20 - row 195 accept: P2 is unnamed with a supplementary group, and P5 names docker
+  ---
+  duration_ms: 1015.859889
+  type: 'test'
+  ...
+# Subtest: row 195 accept: P5 is closed with no jarvis account, and P2 with an empty authorized_keys
+ok 21 - row 195 accept: P5 is closed with no jarvis account, and P2 with an empty authorized_keys
+  ---
+  duration_ms: 400.087324
+  type: 'test'
+  ...
+# Subtest: row 195 accept: P9 is unnamed once for each item missing
+ok 22 - row 195 accept: P9 is unnamed once for each item missing
+  ---
+  duration_ms: 2710.187272
+  type: 'test'
+  ...
+# Subtest: row253 accept: P10 fails its observation with another peer; P11 with the unit disabled
+ok 23 - row253 accept: P10 fails its observation with another peer; P11 with the unit disabled
+  ---
+  duration_ms: 800.289163
+  type: 'test'
+  ...
+# Subtest: row 195 accept: every P check unnamed together still exits 0
+ok 24 - row 195 accept: every P check unnamed together still exits 0
+  ---
+  duration_ms: 348.312367
+  type: 'test'
+  ...
+# Subtest: row 195 accept: a bad args file refuses with exit 2 before any check, each for its own reason
+ok 25 - row 195 accept: a bad args file refuses with exit 2 before any check, each for its own reason
+  ---
+  duration_ms: 101.428549
+  type: 'test'
+  ...
+# Subtest: row 195 accept: usage errors and a run without --root as a user exit 2
+ok 26 - row 195 accept: usage errors and a run without --root as a user exit 2
+  ---
+  duration_ms: 11.252533
+  type: 'test'
+  ...
+# Subtest: row 195 accept: every in-instance call goes through sudo -u mosaic -H env PATH=<node dir>:...
+not ok 27 - row 195 accept: every in-instance call goes through sudo -u mosaic -H env PATH=<node dir>:...
+  ---
+  duration_ms: 448.51281
+  type: 'test'
+  location: '/home/jwoltje/.t3/worktrees/mosaic-stack/gander-row196/packages/cli/tests/case1-accept.test.mjs:625:1'
+  failureType: 'testCodeFailure'
+  error: |-
+    The input did not match the regular expression /^talk chief case1-accept-[0-9a-f]{12}: .* --business mosaic-stack --tester --wait 300$/. Input:
+    
+    'talk chief case1-accept-7f454c46: this is the Case 1 acceptance; reply with one short line. --business mosaic-stack --tester --wait 300'
+    
+  code: 'ERR_ASSERTION'
+  name: 'AssertionError'
+  expected:
+  actual: 'talk chief case1-accept-7f454c46: this is the Case 1 acceptance; reply with one short line. --business mosaic-stack --tester --wait 300'
+  operator: 'match'
+  stack: |-
+    TestContext.<anonymous> (file:///home/jwoltje/.t3/worktrees/mosaic-stack/gander-row196/packages/cli/tests/case1-accept.test.mjs:641:10)
+    Test.runInAsyncScope (node:async_hooks:226:14)
+    Test.run (node:internal/test_runner/test:1402:25)
+    Test.processPendingSubtests (node:internal/test_runner/test:974:18)
+    Test.postRun (node:internal/test_runner/test:1542:19)
+    Test.run (node:internal/test_runner/test:1467:12)
+    async Test.processPendingSubtests (node:internal/test_runner/test:974:7)
+  ...
+# Subtest: row 195 accept: the host check runs with --check and never --enforce
+ok 28 - row 195 accept: the host check runs with --check and never --enforce
+  ---
+  duration_ms: 421.488991
+  type: 'test'
+  ...
+1..28
+# tests 28
+# suites 0
+# pass 27
+# fail 1
+# cancelled 0
+# skipped 0
+# todo 0
+# duration_ms 41874.061683
@@ -0,0 +1,34 @@
+{
+  "grant": "sage-2279",
+  "stage": "green",
+  "steps": [
+    {
+      "code": 0,
+      "timeout": false,
+      "seconds": 19.459,
+      "log": "agents/gander/work/queue-253/run1/green/focused-1.log",
+      "name": "focused-1",
+      "expected_red": false,
+      "counts": {
+        "tests": 36,
+        "pass": 36,
+        "fail": 0,
+        "skipped": 0
+      }
+    },
+    {
+      "code": 1,
+      "timeout": false,
+      "seconds": 41.962,
+      "log": "agents/gander/work/queue-253/run1/green/focused-2.log",
+      "name": "focused-2",
+      "expected_red": false,
+      "counts": {
+        "tests": 28,
+        "pass": 27,
+        "fail": 1,
+        "skipped": 0
+      }
+    }
+  ]
+}
@@ -0,0 +1,6 @@
+{
+  "file": "packages/cli/tests/case1-accept.test.mjs",
+  "before": "10d2117fc497d5a26b390b0820c5b6b225d294fc6539b4a62d7d2ded9c5c9079",
+  "after": "21d6471c6ce2b3c0852cc723eae0731d1ced8ad1ddd6269a4f2e5026d556bfb8",
+  "cause": "Broad od fake intercepted existing random-token generator. Narrowed to -An -tx1 -N4, delegating other calls. Assertion unchanged. No tests run after stop."
+}
@@ -0,0 +1,4 @@
+{
+  "scripts/case1-accept.sh": "1302cfc659ff9073035b99d7b4071aa2c75070da142bb201d2f58a66e113d71f",
+  "scripts/case2-unit.sh": "a84bb266d52a5c078171582e2f9a511becf56421ae218266e3238d704727f6dd"
+}
@@ -0,0 +1,5 @@
+{
+  "count": 0,
+  "processes": [],
+  "scope": "Own worktree and grant TMPDIR cwd, excluding current ancestors. Both product group-cleanup tests passed."
+}
@@ -0,0 +1 @@
+/mnt/storage/scratch/tmp/glFUYC2
@@ -0,0 +1,37 @@
+# Row253 M1-M33 results
+
+| Check | Outcome | Base seconds | Changed seconds |
+|---|---|---:|---:|
+| M1 | killed | 0.214 | 0.214 |
+| M2 | killed | 0.465 | 0.465 |
+| M3 | killed | 0.365 | 0.365 |
+| M4 | killed | 0.916 | 1.217 |
+| M5 | killed | 0.916 | 0.916 |
+| M6 | killed | 0.916 | 0.315 |
+| M7 | killed | 0.214 | 0.164 |
+| M8 | killed | 0.916 | 0.766 |
+| M9 | killed | 0.916 | 0.916 |
+| M10 | killed | 0.916 | 1.016 |
+| M11 | killed | 0.916 | 1.067 |
+| M12 | killed | 0.365 | 0.415 |
+| M13 | killed | 0.365 | 0.615 |
+| M14 | killed | 0.365 | 0.615 |
+| M15 | killed | 0.515 | 0.916 |
+| M16 | killed | 0.916 | 0.515 |
+| M17 | killed | 6.279 | 0.515 |
+| M18 | killed | 6.279 | 1.317 |
+| M19 | killed | 6.279 | 2.920 |
+| M20 | killed | 6.279 | 2.218 |
+| M21 | killed | 6.279 | 3.672 |
+| M22 | killed | 6.279 | 3.822 |
+| M23 | killed | 6.279 | 5.626 |
+| M24 | killed | 0.365 | 0.215 |
+| M25 | killed | 0.615 | 0.615 |
+| M26 | killed | 6.279 | 5.776 |
+| M27 | killed | 0.615 | 0.615 |
+| M28 | killed | 0.916 | 0.716 |
+| M29 | killed | 0.916 | 0.816 |
+| M30 | killed | 0.916 | 0.415 |
+| M31 | killed | 0.214 | 0.215 |
+| M32 | killed | 0.214 | 0.265 |
+| M33 | killed | 0.365 | 0.967 |
@@ -0,0 +1,6 @@
+{
+  "reason": "Static C4 sudo monitor/session gap: cannot establish SIGKILL group containment for a policy using a pty. No failing TAP entries observed before interruption.",
+  "window_pid": 221862,
+  "pipeline_group": 612045,
+  "signal": "SIGTERM"
+}
@@ -0,0 +1,3 @@
+# Run2 deliberate interruption
+
+The raw Webui/whole-controller traceback says unexpected failure because the generic driver reports any nonzero pipeline status that way. This pipeline received SIGTERM from Gander for the static C4 gap; INTERRUPT.json records the owned group. Sage-2307 item5 rules this an interruption, not a test failure. CLI had completed 755/0 before Webui started; Webui has no completed total, and ten shells never started. Sweep count0. No run followed the stop.
@@ -0,0 +1,4 @@
+{
+  "scripts/case1-accept.sh": "1302cfc659ff9073035b99d7b4071aa2c75070da142bb201d2f58a66e113d71f",
+  "scripts/case2-unit.sh": "a84bb266d52a5c078171582e2f9a511becf56421ae218266e3238d704727f6dd"
+}
@@ -0,0 +1,71 @@
+{
+  "grant": "sage-2297",
+  "stop": "Deliberate interruption for static C4 gap; sage-2307 says Webui interrupt is not a failure.",
+  "green": [
+    {
+      "code": 0,
+      "timeout": false,
+      "seconds": 16.449,
+      "log": "agents/gander/work/queue-253/run2/green/focused-1.log",
+      "name": "focused-1",
+      "expected_red": false,
+      "counts": {
+        "tests": 36,
+        "pass": 36,
+        "fail": 0,
+        "skipped": 0
+      }
+    },
+    {
+      "code": 0,
+      "timeout": false,
+      "seconds": 37.55,
+      "log": "agents/gander/work/queue-253/run2/green/focused-2.log",
+      "name": "focused-2",
+      "expected_red": false,
+      "counts": {
+        "tests": 28,
+        "pass": 28,
+        "fail": 0,
+        "skipped": 0
+      }
+    }
+  ],
+  "whole": [
+    {
+      "code": 0,
+      "timeout": false,
+      "seconds": 597.084,
+      "log": "agents/gander/work/queue-253/run2/whole/cli.log",
+      "name": "cli",
+      "expected_red": false,
+      "counts": {
+        "tests": 755,
+        "pass": 755,
+        "fail": 0,
+        "skipped": 0
+      }
+    },
+    {
+      "code": -15,
+      "timeout": false,
+      "seconds": 4.736,
+      "log": "agents/gander/work/queue-253/run2/whole/webui.log",
+      "name": "webui",
+      "expected_red": false,
+      "counts": {}
+    }
+  ],
+  "changes": {
+    "killed": 33,
+    "survivors": 0,
+    "timeouts": 0,
+    "base_seconds": 11.808,
+    "changed_seconds": 41.202
+  },
+  "shells": "NOT RUN",
+  "sweep": {
+    "count": 0,
+    "processes": []
+  }
+}
@@ -0,0 +1 @@
+["node", "--test", "--test-reporter=tap", "--test-name-pattern", "row253 factory refuses retired TCP", "packages/cli/tests/case2-unit.test.mjs"]
@@ -0,0 +1,16 @@
+TAP version 13
+# Subtest: row253 factory refuses retired TCP and a value after the socket marker
+ok 1 - row253 factory refuses retired TCP and a value after the socket marker
+  ---
+  duration_ms: 29.223639
+  type: 'test'
+  ...
+1..1
+# tests 1
+# suites 0
+# pass 1
+# fail 0
+# cancelled 0
+# skipped 0
+# todo 0
+# duration_ms 141.584967
@@ -0,0 +1 @@
+["node", "--test", "--test-reporter=tap", "--test-name-pattern", "row253 factory refuses retired TCP", "packages/cli/tests/case2-unit.test.mjs"]
@@ -0,0 +1,37 @@
+TAP version 13
+# Subtest: row253 factory refuses retired TCP and a value after the socket marker
+not ok 1 - row253 factory refuses retired TCP and a value after the socket marker
+  ---
+  duration_ms: 17.019714
+  type: 'test'
+  location: '/home/jwoltje/.t3/worktrees/mosaic-stack/gander-row196/packages/cli/tests/case2-unit.test.mjs:494:1'
+  failureType: 'testCodeFailure'
+  error: |-
+    The input did not match the regular expression /case2-unit.sh retires tester TCP; use --tester-socket/. Input:
+    
+    'case2-unit: unknown serve flag: --tester-port\n'
+    
+  code: 'ERR_ASSERTION'
+  name: 'AssertionError'
+  expected:
+  actual: |-
+    case2-unit: unknown serve flag: --tester-port
+    
+  operator: 'match'
+  stack: |-
+    refuses (file:///home/jwoltje/.t3/worktrees/mosaic-stack/gander-row196/packages/cli/tests/case2-unit.test.mjs:219:10)
+    TestContext.<anonymous> (file:///home/jwoltje/.t3/worktrees/mosaic-stack/gander-row196/packages/cli/tests/case2-unit.test.mjs:496:3)
+    Test.runInAsyncScope (node:async_hooks:226:14)
+    Test.run (node:internal/test_runner/test:1402:25)
+    Test.start (node:internal/test_runner/test:1262:17)
+    startSubtestAfterBootstrap (node:internal/test_runner/harness:387:17)
+  ...
+1..1
+# tests 1
+# suites 0
+# pass 0
+# fail 1
+# cancelled 0
+# skipped 0
+# todo 0
+# duration_ms 127.863578
@@ -0,0 +1 @@
+["node", "--test", "--test-reporter=tap", "--test-name-pattern", "row253 installer refuses unsafe location and query facts", "packages/cli/tests/case2-unit.test.mjs"]
@@ -0,0 +1,36 @@
+TAP version 13
+# Subtest: row253 installer refuses unsafe location and query facts before unit writes
+not ok 1 - row253 installer refuses unsafe location and query facts before unit writes
+  ---
+  duration_ms: 820.638371
+  type: 'test'
+  location: '/home/jwoltje/.t3/worktrees/mosaic-stack/gander-row196/packages/cli/tests/case2-unit.test.mjs:134:1'
+  failureType: 'testCodeFailure'
+  error: |-
+    expected a refusal, got 0: case2-unit: wrote /mnt/storage/scratch/tmp/gR3d8dO/case2-unit-eR5it3/units/[email protected] and /mnt/storage/scratch/tmp/gR3d8dO/case2-unit-eR5it3/units/mosaic-webui.service from copy aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; enabled and started [email protected], then mosaic-webui.service
+    
+    
+    0 !== 1
+    
+  code: 'ERR_ASSERTION'
+  name: 'AssertionError'
+  expected: 1
+  actual: 0
+  operator: 'strictEqual'
+  stack: |-
+    refuses (file:///home/jwoltje/.t3/worktrees/mosaic-stack/gander-row196/packages/cli/tests/case2-unit.test.mjs:218:10)
+    TestContext.<anonymous> (file:///home/jwoltje/.t3/worktrees/mosaic-stack/gander-row196/packages/cli/tests/case2-unit.test.mjs:157:39)
+    Test.runInAsyncScope (node:async_hooks:226:14)
+    Test.run (node:internal/test_runner/test:1402:25)
+    Test.start (node:internal/test_runner/test:1262:17)
+    startSubtestAfterBootstrap (node:internal/test_runner/harness:387:17)
+  ...
+1..1
+# tests 1
+# suites 0
+# pass 0
+# fail 1
+# cancelled 0
+# skipped 0
+# todo 0
+# duration_ms 937.440456
@@ -0,0 +1 @@
+["node", "--test", "--test-reporter=tap", "--test-name-pattern", "row253 installer refuses unsafe location and query facts", "packages/cli/tests/case2-unit.test.mjs"]
@@ -0,0 +1,36 @@
+TAP version 13
+# Subtest: row253 installer refuses unsafe location and query facts before unit writes
+not ok 1 - row253 installer refuses unsafe location and query facts before unit writes
+  ---
+  duration_ms: 840.318392
+  type: 'test'
+  location: '/home/jwoltje/.t3/worktrees/mosaic-stack/gander-row196/packages/cli/tests/case2-unit.test.mjs:134:1'
+  failureType: 'testCodeFailure'
+  error: |-
+    expected a refusal, got 0: case2-unit: wrote /mnt/storage/scratch/tmp/gR3d8dO/case2-unit-CGGJnM/units/[email protected] and /mnt/storage/scratch/tmp/gR3d8dO/case2-unit-CGGJnM/units/mosaic-webui.service from copy aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; enabled and started [email protected], then mosaic-webui.service
+    
+    
+    0 !== 1
+    
+  code: 'ERR_ASSERTION'
+  name: 'AssertionError'
+  expected: 1
+  actual: 0
+  operator: 'strictEqual'
+  stack: |-
+    refuses (file:///home/jwoltje/.t3/worktrees/mosaic-stack/gander-row196/packages/cli/tests/case2-unit.test.mjs:218:10)
+    TestContext.<anonymous> (file:///home/jwoltje/.t3/worktrees/mosaic-stack/gander-row196/packages/cli/tests/case2-unit.test.mjs:157:39)
+    Test.runInAsyncScope (node:async_hooks:226:14)
+    Test.run (node:internal/test_runner/test:1402:25)
+    Test.start (node:internal/test_runner/test:1262:17)
+    startSubtestAfterBootstrap (node:internal/test_runner/harness:387:17)
+  ...
+1..1
+# tests 1
+# suites 0
+# pass 0
+# fail 1
+# cancelled 0
+# skipped 0
+# todo 0
+# duration_ms 962.598357
@@ -0,0 +1 @@
+["node", "--test", "--test-reporter=tap", "--test-name-pattern", "a bad args file refuses", "packages/cli/tests/case1-accept.test.mjs"]
@@ -0,0 +1,16 @@
+TAP version 13
+# Subtest: row 195 accept: a bad args file refuses with exit 2 before any check, each for its own reason
+ok 1 - row 195 accept: a bad args file refuses with exit 2 before any check, each for its own reason
+  ---
+  duration_ms: 160.205676
+  type: 'test'
+  ...
+1..1
+# tests 1
+# suites 0
+# pass 1
+# fail 0
+# cancelled 0
+# skipped 0
+# todo 0
+# duration_ms 276.702477
@@ -0,0 +1 @@
+["node", "--test", "--test-reporter=tap", "--test-name-pattern", "a bad args file refuses", "packages/cli/tests/case1-accept.test.mjs"]
@@ -0,0 +1,30 @@
+TAP version 13
+# Subtest: row 195 accept: a bad args file refuses with exit 2 before any check, each for its own reason
+not ok 1 - row 195 accept: a bad args file refuses with exit 2 before any check, each for its own reason
+  ---
+  duration_ms: 141.954375
+  type: 'test'
+  location: '/home/jwoltje/.t3/worktrees/mosaic-stack/gander-row196/packages/cli/tests/case1-accept.test.mjs:587:1'
+  failureType: 'testCodeFailure'
+  error: 'retired TCP'
+  code: 'ERR_ASSERTION'
+  name: 'AssertionError'
+  expected:
+  actual: 'case1-accept: refusing: unknown serve flag --tester-port'
+  operator: 'match'
+  stack: |-
+    TestContext.<anonymous> (file:///home/jwoltje/.t3/worktrees/mosaic-stack/gander-row196/packages/cli/tests/case1-accept.test.mjs:608:12)
+    Test.runInAsyncScope (node:async_hooks:226:14)
+    Test.run (node:internal/test_runner/test:1402:25)
+    Test.start (node:internal/test_runner/test:1262:17)
+    startSubtestAfterBootstrap (node:internal/test_runner/harness:387:17)
+  ...
+1..1
+# tests 1
+# suites 0
+# pass 0
+# fail 1
+# cancelled 0
+# skipped 0
+# todo 0
+# duration_ms 298.371364
@@ -0,0 +1 @@
+["node", "--test", "--test-reporter=tap", "--test-name-pattern", "a bad args file refuses", "packages/cli/tests/case1-accept.test.mjs"]
@@ -0,0 +1,64 @@
+TAP version 13
+# Subtest: row 195 accept: a bad args file refuses with exit 2 before any check, each for its own reason
+not ok 1 - row 195 accept: a bad args file refuses with exit 2 before any check, each for its own reason
+  ---
+  duration_ms: 419.508161
+  type: 'test'
+  location: '/home/jwoltje/.t3/worktrees/mosaic-stack/gander-row196/packages/cli/tests/case1-accept.test.mjs:587:1'
+  failureType: 'testCodeFailure'
+  error: |-
+    no tester socket: F1 units-user pass [email protected] and mosaic-webui.service are active as mosaic (uid 997)
+    F2 console-loopback pass healthz answers, and 732 is bound to 127.0.0.1 only, by MainPID 200
+    F3 tester-reply pass chief replied to case1-accept-511942f73671
+    F4 precheck pass case2-precheck.sh --profile factory exits 0
+    F5 bwrap-label pass bwrap 300 reads 'bwrap (enforce)' and its claude descendant 302 reads 'bwrap//&unpriv_bwrap (enforce)'
+    F6 claude-pin pass /opt/mosaic-stack/claude-2.1.0/node_modules/@anthropic-ai/claude-code/bin/claude.exe prints '2.1.0 (Claude Code)'
+    F7 pm-live pass one live launch: pm run r-0002
+    F8 credential-file pass /srv/mosaic/.config/mosaic-dev/secrets/claude-session.env is 'mosaic 600 regular file'
+    F9 autoupdater-off pass /etc/claude-code/managed-settings.json is root:root 0644 with env.DISABLE_AUTOUPDATER "1"
+    F10 node-pin pass /opt/mosaic-stack/node-v24.1.0/bin/node prints v24.1.0
+    F11 no-discord pass /srv/mosaic/.mosaic-dev/discord is absent
+    P1 mosaic-sudo closed sudo -l: User mosaic is not allowed to run sudo on dev-53.
+    P2 mosaic-groups-keys closed id -G is '997'; authorized_keys is absent
+    P3 localadmin-sudo accepted Q183 sudo -l -U localadmin lists 1 NOPASSWD lines
+    P4 pve-root-pbs accepted Q182+Q183 root on pve over VM 1008, and PBS backups that hold /srv/mosaic with the credential; this script can't see pve
+    P5 jarvis-reach closed jarvis is in none of sudo, docker and lxd (groups: jarvis)
+    P6 group-members closed sudo holds only localadmin, and docker and lxd have no members
+    P7 sudoers-d closed no file under /etc/sudoers.d names mosaic
+    P8 lan-listeners closed 732 is on 127.0.0.1 only by MainPID 200; no TCP listener on 7331 or 7333; tester uses /srv/mosaic/.mosaic-dev/console/tester.sock
+    P9 bwrap-userns accepted mos-1096 hostcheck items 1-6 ok, jarvis is denied bwrap, and group mosaic has no other member
+    P10 tester-socket-squat unnamed boundary=observed path=/srv/mosaic/.mosaic-dev/console/tester.sock parent=0700 owner=997 socket=0600 peer_pid=200 peer_uid=997 floor=1024 port=732; hostile same-uid substitution remains
+    P11 hostcheck-before-bus closed mosaic-hostcheck.service is enabled, and its Before= names [email protected]
+    count pass 11
+    count FAIL 0
+    count closed 7
+    count accepted Q182+Q183 1
+    count accepted Q183 1
+    count accepted mos-1096 1
+    count unnamed 1
+    case1-accept: every F check passes; send the whole output to Duckworth, and each unnamed line to Mos
+    
+    
+    0 !== 2
+    
+  code: 'ERR_ASSERTION'
+  name: 'AssertionError'
+  expected: 2
+  actual: 0
+  operator: 'strictEqual'
+  stack: |-
+    TestContext.<anonymous> (file:///home/jwoltje/.t3/worktrees/mosaic-stack/gander-row196/packages/cli/tests/case1-accept.test.mjs:606:12)
+    Test.runInAsyncScope (node:async_hooks:226:14)
+    Test.run (node:internal/test_runner/test:1402:25)
+    Test.start (node:internal/test_runner/test:1262:17)
+    startSubtestAfterBootstrap (node:internal/test_runner/harness:387:17)
+  ...
+1..1
+# tests 1
+# suites 0
+# pass 0
+# fail 1
+# cancelled 0
+# skipped 0
+# todo 0
+# duration_ms 532.619824
@@ -0,0 +1 @@
+["node", "--test", "--test-reporter=tap", "--test-name-pattern", "a bad args file refuses", "packages/cli/tests/case1-accept.test.mjs"]
@@ -0,0 +1,64 @@
+TAP version 13
+# Subtest: row 195 accept: a bad args file refuses with exit 2 before any check, each for its own reason
+not ok 1 - row 195 accept: a bad args file refuses with exit 2 before any check, each for its own reason
+  ---
+  duration_ms: 445.63961
+  type: 'test'
+  location: '/home/jwoltje/.t3/worktrees/mosaic-stack/gander-row196/packages/cli/tests/case1-accept.test.mjs:587:1'
+  failureType: 'testCodeFailure'
+  error: |-
+    socket value: F1 units-user pass [email protected] and mosaic-webui.service are active as mosaic (uid 997)
+    F2 console-loopback pass healthz answers, and 732 is bound to 127.0.0.1 only, by MainPID 200
+    F3 tester-reply pass chief replied to case1-accept-fed0bb351858
+    F4 precheck pass case2-precheck.sh --profile factory exits 0
+    F5 bwrap-label pass bwrap 300 reads 'bwrap (enforce)' and its claude descendant 302 reads 'bwrap//&unpriv_bwrap (enforce)'
+    F6 claude-pin pass /opt/mosaic-stack/claude-2.1.0/node_modules/@anthropic-ai/claude-code/bin/claude.exe prints '2.1.0 (Claude Code)'
+    F7 pm-live pass one live launch: pm run r-0002
+    F8 credential-file pass /srv/mosaic/.config/mosaic-dev/secrets/claude-session.env is 'mosaic 600 regular file'
+    F9 autoupdater-off pass /etc/claude-code/managed-settings.json is root:root 0644 with env.DISABLE_AUTOUPDATER "1"
+    F10 node-pin pass /opt/mosaic-stack/node-v24.1.0/bin/node prints v24.1.0
+    F11 no-discord pass /srv/mosaic/.mosaic-dev/discord is absent
+    P1 mosaic-sudo closed sudo -l: User mosaic is not allowed to run sudo on dev-53.
+    P2 mosaic-groups-keys closed id -G is '997'; authorized_keys is absent
+    P3 localadmin-sudo accepted Q183 sudo -l -U localadmin lists 1 NOPASSWD lines
+    P4 pve-root-pbs accepted Q182+Q183 root on pve over VM 1008, and PBS backups that hold /srv/mosaic with the credential; this script can't see pve
+    P5 jarvis-reach closed jarvis is in none of sudo, docker and lxd (groups: jarvis)
+    P6 group-members closed sudo holds only localadmin, and docker and lxd have no members
+    P7 sudoers-d closed no file under /etc/sudoers.d names mosaic
+    P8 lan-listeners closed 732 is on 127.0.0.1 only by MainPID 200; no TCP listener on 7331 or 7333; tester uses /srv/mosaic/.mosaic-dev/console/tester.sock
+    P9 bwrap-userns accepted mos-1096 hostcheck items 1-6 ok, jarvis is denied bwrap, and group mosaic has no other member
+    P10 tester-socket-squat unnamed boundary=observed path=/srv/mosaic/.mosaic-dev/console/tester.sock parent=0700 owner=997 socket=0600 peer_pid=200 peer_uid=997 floor=1024 port=732; hostile same-uid substitution remains
+    P11 hostcheck-before-bus closed mosaic-hostcheck.service is enabled, and its Before= names [email protected]
+    count pass 11
+    count FAIL 0
+    count closed 7
+    count accepted Q182+Q183 1
+    count accepted Q183 1
+    count accepted mos-1096 1
+    count unnamed 1
+    case1-accept: every F check passes; send the whole output to Duckworth, and each unnamed line to Mos
+    
+    
+    0 !== 2
+    
+  code: 'ERR_ASSERTION'
+  name: 'AssertionError'
+  expected: 2
+  actual: 0
+  operator: 'strictEqual'
+  stack: |-
+    TestContext.<anonymous> (file:///home/jwoltje/.t3/worktrees/mosaic-stack/gander-row196/packages/cli/tests/case1-accept.test.mjs:606:12)
+    Test.runInAsyncScope (node:async_hooks:226:14)
+    Test.run (node:internal/test_runner/test:1402:25)
+    Test.start (node:internal/test_runner/test:1262:17)
+    startSubtestAfterBootstrap (node:internal/test_runner/harness:387:17)
+  ...
+1..1
+# tests 1
+# suites 0
+# pass 0
+# fail 1
+# cancelled 0
+# skipped 0
+# todo 0
+# duration_ms 550.692311
@@ -0,0 +1 @@
+["node", "--test", "--test-reporter=tap", "--test-name-pattern", "row253 acceptance rejects bad config", "packages/cli/tests/case1-accept.test.mjs"]
@@ -0,0 +1,16 @@
+TAP version 13
+# Subtest: row253 acceptance rejects bad config and unsupported copies before talk
+ok 1 - row253 acceptance rejects bad config and unsupported copies before talk
+  ---
+  duration_ms: 323.110026
+  type: 'test'
+  ...
+1..1
+# tests 1
+# suites 0
+# pass 1
+# fail 0
+# cancelled 0
+# skipped 0
+# todo 0
+# duration_ms 423.527216
				`@@ -0,0 +1 @@`
				`["node", "--test", "--test-name-pattern", "row253 socket observation uses configured root", "packages/cli/tests/case1-accept.test.mjs"]`
				`@@ -0,0 +1 @@`
				`["node", "--test", "packages/cli/tests/case2-unit.test.mjs"]`
				`@@ -0,0 +1 @@`
				`["node", "--test", "--test-reporter=tap", "packages/cli/tests/case2-unit.test.mjs"]`