fix(shell): preserve pipeline verdict semantics

fix(shell): remove runtime early-exit pipe hazards
fix(fleet): make framework shell assertions SIGPIPE-safe (#1100 )
2026-08-07 04:24:08 -05:00 · 2026-08-07 03:58:35 -05:00 · 2026-08-07 08:21:20 +00:00 · 2026-08-07 07:07:45 +00:00 · 2026-08-07 05:59:12 +00:00 · 2026-08-07 05:33:38 +00:00
54 changed files with 1292 additions and 694 deletions
@@ -46,6 +46,10 @@ steps:
      # [0] of the pnpm chain, so severing that chain would silence it together
      # with everything it guards; this direct line keeps one instrument running.
      - bash packages/mosaic/framework/tools/quality/scripts/check-test-enumeration.sh
+      # Hermetic regression for issue-close.sh (#1081): mocks tea/curl onto PATH
+      # and sandboxes a throwaway git repo, so it resolves no real credentials and
+      # joins CI directly rather than the exclusions file.
+      - bash packages/mosaic/framework/tools/git/test-issue-close-fail-closed.sh

  # Blocking gate (#791): a framework upgrade must never write or delete an
  # operator-owned path. The HARD GATE proves an unanticipated operator sentinel
@@ -245,9 +245,21 @@ describe('EnrollmentService.createToken', () => {
    const after = Date.now();

    const expiresMs = new Date(result.expiresAt).getTime();
-    // Should be at most 900s from now
-    expect(expiresMs - before).toBeLessThanOrEqual(900_000 + 100);
+
+    // The property under test is CLAMPING: a 9999s request must come back as 900s.
+    // The gap between clamped and unclamped is 9_099_000 ms, so the tolerance below
+    // only has to exceed CI scheduling jitter — it does not need to be tight to keep
+    // the assertion discriminating. A 5s allowance consumes 0.05% of that margin and
+    // an unclamped result still misses by three orders of magnitude.
+    //
+    // It was 100ms and failed on a loaded agent at 900_106 — 6ms over (#1090). A
+    // wall-clock budget sized to a fast machine is a flake, not a tighter test.
+    const CI_JITTER_MS = 5_000;
+    expect(expiresMs - before).toBeLessThanOrEqual(900_000 + CI_JITTER_MS);
    expect(expiresMs - after).toBeGreaterThanOrEqual(0);
+    // Explicitly pin the clamp itself, independent of any timing allowance:
+    // unclamped (9999s) would exceed this by ~9_099_000 ms.
+    expect(expiresMs - before).toBeLessThan(1_000_000);
  });
 });

@@ -146,6 +146,68 @@ lands. M0 consists only of these normative requirements, the complete task DAG,
 documentation IA checklist, and the legacy example/profile disposition inventory. Subsequent cards
 are defined in [docs/TASKS.md](./TASKS.md) and must remain one card/one PR.

+### Fleet git identity launch propagation (#1043)
+
+#### Problem and objective
+
+A fleet seat can have a registered per-agent Git credential while its launched runtime process lacks
+`MOSAIC_GIT_IDENTITY`. The credential resolver then cannot select the seat identity reliably, which
+blocks repository operations on fail-closed estates and can fall through to an unrelated identity on
+estates where that refusal is not active. The objective is to make Git identity a deterministic,
+roster-derived part of the generated launch projection and prove it reaches the launched process.
+
+#### Normative requirements
+
+1. `FGI-REQ-01`: Every generated fleet agent projection SHALL declare
+   `MOSAIC_GIT_IDENTITY=<MOSAIC_AGENT_NAME>`; a differing or unsafe identity SHALL fail closed before
+   tmux launch.
+2. `FGI-REQ-02`: The clean `/usr/bin/env -i` pane boundary SHALL pass every variable declared by the
+   generated projection, including `MOSAIC_GIT_IDENTITY`, to the launched runtime process.
+3. `FGI-REQ-03`: A behavioral integration test SHALL set-compare the complete generated projection
+   against the launched process environment. Source-text/string-presence assertions are insufficient.
+4. `FGI-REQ-04`: Verification SHALL include RED-first evidence and a delete-the-subject mutation that
+   removes Git-identity pane propagation and makes the behavioral test fail.
+
+#### Acceptance criteria
+
+1. `AC-FGI-01`: A launched seat process contains every key/value pair declared by its generated
+   environment projection, including the roster-derived Git identity.
+2. `AC-FGI-02`: Missing, unsafe, or split Git identity is rejected before a tmux session is created.
+3. `AC-FGI-03`: Focused launcher and generated-environment tests, repository quality gates,
+   independent review, and the required RED/green/R7 evidence are recorded before push.
+
+### Framework shell assertion portability (#1098)
+
+#### Problem and objective
+
+The blocking framework-shell chain can report that a pane command omitted `/usr/bin/env -i` even when
+`-i` matched successfully. A short-circuiting `grep -q` under `set -o pipefail` may close its pipe after
+the match and cause an upstream producer to exit with SIGPIPE, turning a valid semantic result into a
+nonzero aggregate pipeline. The objective is to inspect the captured NUL-delimited argv directly and
+make failures carry the observed records needed for diagnosis.
+
+#### Normative requirements
+
+1. `FSP-REQ-01`: The pane-boundary test SHALL validate an adjacent `/usr/bin/env`, `-i` argv pair from
+   the authoritative NUL-delimited tmux capture without a short-circuit pipeline whose upstream status
+   can override a successful match.
+2. `FSP-REQ-02`: Missing, reversed, or non-adjacent boundary tokens SHALL fail, while valid boundaries
+   SHALL remain valid regardless of trailing argv size, pipe capacity, process scheduling, or host/CI
+   utility implementation.
+3. `FSP-REQ-03`: A failed boundary check SHALL print stable indexed, shell-escaped observed argv records
+   before exiting nonzero; the fixture SHALL continue to contain generated non-secret launch data only.
+4. `FSP-REQ-04`: Verification SHALL include RED-first large-payload evidence, negative token-order
+   controls, the complete focused launcher suite, canonical Woodpecker CI, and independent review.
+
+#### Acceptance criteria
+
+1. `AC-FSP-01`: A large captured argv with adjacent `/usr/bin/env`, `-i` passes even when the former
+   `grep -q` pipeline returns nonzero from an upstream SIGPIPE.
+2. `AC-FSP-02`: Missing executable, missing flag, and detached/reversed flag fixtures return nonzero and
+   emit the indexed observed argv.
+3. `AC-FSP-03`: The focused suite passes on the development host and CI image, and the merged-main
+   Woodpecker pipeline is terminal green before #1098 closes.
+
 ---

 ## Exact Cross-Harness Fleet Communications Contract (#766)
@@ -5,14 +5,14 @@ Generated environment files are rebuildable projections, not an operator-editabl

 ## Launch chain

-| Layer               | Responsibility                                                                                                                  |
-| ------------------- | ------------------------------------------------------------------------------------------------------------------------------- |
-| Roster              | `fleet/roster.yaml` supplies the agent name, class, supported runtime, model, reasoning, tool policy, workdir, and tmux socket. |
-| Projection writer   | Renders deterministic fleet/agents/<name>.env.generated from the roster.                                                        |
-| Optional local data | Reads a strict, data-only fleet/agents/<name>.env.local; it cannot shadow generated keys.                                       |
-| systemd             | Starts the launcher with env -i and fixed bootstrap data. It does not preload either environment file.                          |
-| session launcher    | Validates generated and local data before it queries, creates, or stops an exact tmux session.                                  |
-| runtime launch      | Derives the fixed mosaic yolo <runtime> argument array from validated roster data, then seeds the runtime contract.             |
+| Layer               | Responsibility                                                                                                                                                                     |
+| ------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| Roster              | `fleet/roster.yaml` supplies the agent name, class, supported runtime, model, reasoning, tool policy, workdir, and tmux socket; Git identity is derived from the exact agent name. |
+| Projection writer   | Renders deterministic fleet/agents/<name>.env.generated from the roster.                                                                                                           |
+| Optional local data | Reads a strict, data-only fleet/agents/<name>.env.local; it cannot shadow generated keys.                                                                                          |
+| systemd             | Starts the launcher with env -i and fixed bootstrap data. It does not preload either environment file.                                                                             |
+| session launcher    | Validates generated and local data before it queries, creates, or stops an exact tmux session.                                                                                     |
+| runtime launch      | Derives the fixed mosaic yolo <runtime> argument array from validated roster data, then seeds the runtime contract.                                                                |

 The launcher never `source`s or `eval`s an environment file and never accepts an environment-supplied
 command. `MOSAIC_AGENT_COMMAND`, command/channel overrides, unknown keys, generated-key shadowing,
@@ -24,6 +24,7 @@ secret-like key names, duplicate keys, comments, quoted/export syntax, and unsaf

 ```dotenv
 MOSAIC_AGENT_NAME=<roster name>
+MOSAIC_GIT_IDENTITY=<roster name>
 MOSAIC_AGENT_CLASS=<roster class>
 MOSAIC_AGENT_RUNTIME=<roster runtime>
 MOSAIC_AGENT_MODEL=<roster model hint>
@@ -33,8 +34,10 @@ MOSAIC_AGENT_WORKDIR=<absolute roster work directory>
 MOSAIC_TMUX_SOCKET=<roster socket or empty>
 ```

-The generated launch contract supports `claude`, `codex`, `opencode`, and `pi`. mosaic fleet add
-rejects another runtime before it writes the roster or modifies generated, local, or quarantine state.
+`MOSAIC_GIT_IDENTITY` is not independently configurable: it must equal `MOSAIC_AGENT_NAME`, preventing
+split runtime and repository identity authority. The generated launch contract supports `claude`,
+`codex`, `opencode`, and `pi`. mosaic fleet add rejects another runtime before it writes the roster or
+modifies generated, local, or quarantine state.
 The legacy dogfood stub remains an observability-only canary on its separate `mosaic-factory` socket;
 it has no generated-launch adapter and cannot be added through this path.

@@ -3,11 +3,12 @@
 The launcher consumes validated data, not shell configuration.

 1. Read and validate the canonical roster.
-2. Render deterministic <name>.env.generated data from that roster.
+2. Render deterministic <name>.env.generated data from that roster, including `MOSAIC_GIT_IDENTITY` derived exactly from the roster agent name.
 3. Parse optional <name>.env.local through a strict allowlist.
 4. Reject generated-key shadowing, unknown or sensitive-looking keys, unsafe paths/values, duplicates, malformed lines, shell syntax, and command overrides.
-5. Derive the runtime command from validated runtime/model/reasoning data.
-6. Target only the exact configured tmux socket and roster session after ownership checks.
+5. Reject a Git identity that is unsafe or differs from the generated agent name.
+6. Derive the runtime command from validated runtime/model/reasoning data and pass every generated projection entry through the clean process environment boundary.
+7. Target only the exact configured tmux socket and roster session after ownership checks.

 ## File precedence and ownership

@@ -35,6 +35,7 @@ values, credential material, or command text.

 ```dotenv
 MOSAIC_AGENT_NAME=<roster name>
+MOSAIC_GIT_IDENTITY=<roster name>
 MOSAIC_AGENT_CLASS=<roster class>
 MOSAIC_AGENT_RUNTIME=<roster runtime>
 MOSAIC_AGENT_MODEL=<roster model hint>
@@ -44,8 +45,9 @@ MOSAIC_AGENT_WORKDIR=<absolute roster work directory>
 MOSAIC_TMUX_SOCKET=<roster socket or empty>
 ```

-The generated launch contract supports only `claude`, `codex`, `opencode`, and `pi`. fleet add
-uses that same runtime authority and rejects any other runtime before it writes the roster or changes
+`MOSAIC_GIT_IDENTITY` is derived from and must equal `MOSAIC_AGENT_NAME`; it is not a separate
+operator-controlled identity authority. The generated launch contract supports only `claude`, `codex`,
+`opencode`, and `pi`. fleet add uses that same runtime authority and rejects any other runtime before it writes the roster or changes
 projection, local, or quarantine files. The legacy dogfood stub on its separate `mosaic-factory`
 socket remains an observability canary; it has no generated-launch adapter and cannot be added through
 this projection path.
@@ -0,0 +1,54 @@
+# #1099 pipefail + early-exit sweep
+
+Baseline: `df4c591ab42aa1ae62c12935fdc0e772684864a0`
+
+This is a site inventory, not a risk count. `FIXED` means the early-exiting consumer no longer has a piped upstream process whose SIGPIPE can become the result under `pipefail`. `NOT-LOAD-BEARING` means the pipeline status is explicitly discarded. `UNREACHABLE-AND-WHY` describes designed input, not a payload-size safety claim.
+
+## Tranche 1 — runtime and general scripts
+
+| Baseline site | Verdict | Construction / reason |
+| --- | --- | --- |
+| `tools/matrix-presence-harness/run.sh:38` | FIXED | nullglob array selects the first path; no pipeline |
+| `tools/e2e-install-test.sh:139` | FIXED | capture help completely, then grep via redirection |
+| `tools/install.sh:312` | FIXED | NUL `mapfile` reads all roots; count != 1 reaches the named malformed-archive diagnostic |
+| `scripts/analysis/reflect-board-history.sh:76` | FIXED | capture Git history completely, then grep via redirection |
+| `scripts/analysis/reflect-git-history.sh:67` | FIXED | grep reads from a here-string |
+| `scripts/analysis/reflect-git-history.sh:69` | FIXED | grep reads from a here-string |
+| `packages/mosaic/framework/tools/authentik/user-create.sh:72` | FIXED | jq `first(...)` reads the response directly |
+| `packages/mosaic/framework/tools/git/mutate-push-guard.sh:87` | FIXED | grep `-m1` reads the file directly; downstream `cut` consumes its complete scalar output |
+| `packages/mosaic/framework/tools/orchestrator/session-resume.sh:94` | FIXED | `mapfile` plus bounded indexed loop replaces `head` pipeline |
+| `packages/mosaic/framework/tools/prdy/prdy-status.sh:69` | FIXED | grep reads from a here-string |
+| `packages/mosaic/framework/tools/qa/reflect-stop-hook.sh:172` | FIXED | grep reads from a here-string |
+| `packages/mosaic/framework/tools/qa/reflect-stop-hook.sh:173` | FIXED | grep reads from a here-string |
+| `packages/mosaic/framework/tools/qa/reflect-stop-hook.sh:174` | FIXED | grep reads from a here-string |
+| `packages/mosaic/framework/tools/qa/reflect-stop-hook.sh:175` | FIXED | grep reads from a here-string |
+| `packages/mosaic/framework/tools/qa/reflect-stop-hook.sh:176` | FIXED | grep reads from a here-string |
+| `packages/mosaic/framework/tools/qa/reflect-stop-hook.sh:177` | FIXED | grep reads from a here-string |
+| `packages/mosaic/framework/tools/qa/reflect-stop-hook.sh:178` | FIXED | grep reads from a here-string |
+| `packages/mosaic/framework/tools/qa/typecheck-hook.sh:16` | FIXED | Bash regex extracts the first field without a pipeline |
+| `packages/mosaic/framework/tools/qa/typecheck-hook.sh:56` | FIXED | grep and bounded sed each read from a here-string |
+| `packages/mosaic/framework/tools/tmux/send-message.sh:113` | FIXED | grep reads from a here-string |
+| `packages/mosaic/framework/tools/tmux/send-message.sh:124` | FIXED | grep reads from a here-string |
+| `packages/mosaic/framework/tools/wake/detector.sh:126` | FIXED | one awk reads the manifest directly and exits after the first exact key |
+| `packages/mosaic/framework/tools/wake/detector.sh:270` | FIXED | grep reads from a here-string |
+| `packages/mosaic/framework/tools/wake/detector.sh:278` | FIXED | grep reads from a here-string |
+| `packages/mosaic/framework/tools/wake/digest.sh:647` | FIXED | capture complete locator output, then select first line by parameter expansion |
+| `packages/mosaic/framework/tools/wake/reconcile.sh:149` | FIXED | one awk reads the manifest directly and exits after the first exact key |
+
+## Explicit withdrawn / non-load-bearing sites
+
+| Baseline site | Verdict | Reason |
+| --- | --- | --- |
+| `tools/install.sh:182` | NOT-LOAD-BEARING | `|| true` explicitly discards lookup status |
+| `tools/install.sh:356` | UNREACHABLE-AND-WHY | `pnpm pack` writes one matching CLI tarball into a fresh directory immediately before lookup; citation withdrawn in #1099 |
+| `tools/install.sh:357` | UNREACHABLE-AND-WHY | same fresh-directory invariant for gateway tarball; citation withdrawn in #1099 |
+| `tools/install.sh:627` | NOT-LOAD-BEARING | `|| true` explicitly discards lookup status |
+| `scripts/agent/session-start.sh:70` | NOT-LOAD-BEARING | optional scratchpad lookup has `|| true` |
+| `packages/mosaic/framework/templates/repo/scripts/agent/session-start.sh:58` | NOT-LOAD-BEARING | optional scratchpad lookup has `|| true` |
+| `packages/mosaic/framework/tools/qa/qa-hook-stdin.sh:25` | UNREACHABLE-AND-WHY | withdrawn in #1099 after designed-input reachability measurement; preserved without re-litigation |
+| `packages/mosaic/framework/tools/qa/qa-hook-stdin.sh:27` | UNREACHABLE-AND-WHY | same withdrawn designed-input finding |
+| `packages/mosaic/framework/tools/qa/qa-hook-stdin.sh:30` | UNREACHABLE-AND-WHY | same withdrawn designed-input finding |
+| `packages/mosaic/framework/tools/qa/qa-hook-stdin.sh:32` | UNREACHABLE-AND-WHY | same withdrawn designed-input finding |
+| `packages/mosaic/framework/tools/qa/qa-hook-stdin.sh:34` | UNREACHABLE-AND-WHY | same withdrawn designed-input finding |
+
+Remaining test and wake-validation sites are intentionally deferred to later review-sized tranches and are not yet assigned a safety verdict here.
@@ -0,0 +1,229 @@
+# #1043 — Fleet pane git-identity propagation
+
+## Objective
+
+Ensure a fleet seat's launched runtime process receives its roster-derived `MOSAIC_GIT_IDENTITY`, and lock the complete generated-environment propagation boundary with an enumerated set comparison.
+
+## Tracking
+
+- External issue: `mosaicstack/stack#1043`
+- Branch: `fix/1043-pane-git-identity`
+- Coordinator: `tl-mosaic`
+- `docs/TASKS.md`: read-only by project worker contract; not modified.
+
+## Constraints
+
+- RED-first bug reproducer is mandatory.
+- R7 delete-the-subject mutation must turn the behavioral test red.
+- Assert launched-process environment, not source text.
+- One push only; do not poll CI after push.
+- Run the CI queue guard immediately before push and report its `state=` line as state, not evidence.
+- Do not modify a live host launcher or obtain/copy another credential.
+- Self-post the PR, verify provider attribution, then stop.
+- Final status wording: `believed-fixed, pending jarvis validation`.
+
+## Scope inventory
+
+Re-derived against `origin/main` at `85d2108e`:
+
+- Launch consumer: `packages/mosaic/framework/tools/fleet/start-agent-session.sh`
+- Behavioral launch test: `packages/mosaic/framework/tools/fleet/test-start-agent-session.sh`
+- Generated-environment contract/parser: `packages/mosaic/src/fleet/generated-env-boundary.ts`
+- Roster projection producers:
+  - `packages/mosaic/src/commands/fleet.ts`
+  - `packages/mosaic/src/fleet/fleet-reconciler.ts`
+  - `packages/mosaic/src/fleet/fleet-agent-crud.ts`
+  - `packages/mosaic/src/fleet/v1-v2-migration.ts`
+- Contract and producer tests discovered by repository search.
+- Generated-environment operator/developer docs and their executable documentation contract test.
+
+Discrepancy sent to `tl-mosaic`: current main no longer contains the charter's `PANE_SHELL_SNIPPET`; #772 replaced it with an `/usr/bin/env -i` argv launch boundary, and current generated projections do not declare git identity. Code-read inventory is **NOT MEASURED** behavior.
+
+## Plan
+
+1. Add the process-environment set-comparison regression first and record RED.
+2. Add roster-derived `MOSAIC_GIT_IDENTITY=<agent name>` to the complete generated projection contract.
+3. Validate identity syntax and equality with `MOSAIC_AGENT_NAME`; pass it through the clean pane environment.
+4. Update affected projection tests and generated-environment docs.
+5. Run focused and baseline gates.
+6. Perform R7 by deleting the pane propagation entry, prove RED, restore, and prove GREEN.
+7. Run independent review, remediate, commit, queue guard, one push, self-post PR, verify provider attribution, and stop without CI polling.
+
+## Budget
+
+No explicit token cap was provided. Working cap: one narrow logical unit, no dependency installation unless existing tooling requires it, no unrelated refactor.
+
+## Evidence log
+
+### TDD and mutation evidence
+
+- RED-first, repository launcher: `bash packages/mosaic/framework/tools/fleet/test-start-agent-session.sh` exited 64 on pre-fix source with `code=unknown-key key=MOSAIC_GIT_IDENTITY`. The generated seat could not launch with the required declared identity.
+- GREEN: the same repository launcher test emitted `ok - start-agent-session generated environment boundary`.
+- R7 delete-the-subject: removed only `"MOSAIC_GIT_IDENTITY=$MOSAIC_GIT_IDENTITY"` from the repository launch array; the same test exited 1 with `FAIL: runtime pane omitted or changed generated environment keys: MOSAIC_GIT_IDENTITY`.
+- R7 restoration: restored that launch entry; the same test returned green.
+- Launcher under test is explicitly `packages/mosaic/framework/tools/fleet/start-agent-session.sh` through the test's `$START`, **not** the stale installed host copy.
+
+### Situational and focused tests
+
+- Repository launcher boundary: green, including set comparison of all nine generated projection entries and fail-before-tmux cases for missing, unsafe, mismatched, and local-shadow Git identity.
+- Fleet systemd launcher integration: `bash packages/mosaic/framework/systemd/user/test-fleet-units.sh` — green.
+- Focused Mosaic Vitest set: 6 files, 311 tests — green.
+- `bash -n` on changed shell files — green.
+- `git diff --check` — green.
+
+### Baseline gates
+
+- `pnpm typecheck` — 45/45 tasks green.
+- `pnpm lint` — 25/25 tasks green.
+- `pnpm format:check` — green.
+- `pnpm test:checkout` — green.
+- Repository-wide Vitest under a hermetic current-version npm prefix: Mosaic 81/81 files and 1510/1510 tests green; other workspace test tasks shown green before the framework-shell phase.
+- Canonical `pnpm test` is not fully green on this host for unrelated environment-sensitive gates:
+  1. the first two runs exposed the globally installed Mosaic 0.0.48 update banner in three CLI smoke tests expecting empty stderr;
+  2. after isolating that global-version input, the framework wake assertion aborted at the known `#973` Bash `BASH_LINENO` convention check (exit 97; observed `[3 5]`, expected `[3 4]`).
+  No tests were weakened or bypassed; focused changed-surface tests are green. CI remains the canonical clean-environment result and is intentionally not polled after push per charter.
+
+### Independent review
+
+- Codex code review first pass: request changes for missing shell rejection-path coverage.
+- Remediation: added table-driven missing/unsafe/mismatch/local-shadow launcher cases, each asserting no tmux call.
+- Codex code re-review: **approve**, no findings, confidence 0.88.
+- Codex security review: risk `none`, no findings, confidence 0.97.
+
+### Acceptance criteria mapping
+
+| Acceptance criterion | Evidence |
+| --- | --- |
+| AC-FGI-01: launched process receives every generated key/value | Repository launcher process-environment `comm -23` set comparison; GREEN and R7 RED evidence above |
+| AC-FGI-02: missing, unsafe, or split identity fails before tmux | Table-driven shell cases plus TypeScript generated-boundary tests |
+| AC-FGI-03: focused/baseline/review evidence recorded | Commands and review outcomes above; host-sensitive full-suite limitations stated explicitly |
+
+### Documentation checklist
+
+- PRD updated with #1043 requirements and acceptance criteria.
+- Fleet launch runbook, generated-env concept, and generated-env reference updated.
+- No API/OpenAPI, sitemap, user publishing target, deployment, or external docs publication change applies.
+- `docs/TASKS.md` remains unmodified per its single-writer project contract.
+
+## Round 2 — PR #1073 review 97 remediation
+
+### Review blocker
+
+The launched-process suite was signed-excluded from CI enumeration. Manual GREEN/R7 evidence therefore did not prove a PR workflow could detect regression.
+
+### RED-first and canonical wiring
+
+1. Removed the suite's signed exclusion before adding a CI execution path.
+2. `check-test-enumeration.sh` went RED with exact `UNENUMERATED` output for `test-start-agent-session.sh`: population 49, enumerated 30, excluded 18.
+3. Added both `framework/tools/fleet/test-start-agent-session.sh` and `framework/systemd/user/test-fleet-units.sh` to `@mosaicstack/mosaic`'s canonical `test:framework-shell` chain.
+4. The guard returned GREEN: population 49, enumerated 32, excluded 18, surfaces 45. The systemd suite is outside the guard's tools-only population but now has the same explicit canonical execution disposition.
+
+### Workflow-level R7
+
+- Deleted only the pane launch entry `"MOSAIC_GIT_IDENTITY=$MOSAIC_GIT_IDENTITY"`.
+- Ran the exact `.woodpecker/ci.yml` test-step command, `pnpm test`, with only a temporary PATH-scoped npm shim reporting the checkout's current 0.0.49 version so the unrelated global 0.0.48 banner could not preempt the shell chain.
+- Result: exit 1 at `@mosaicstack/mosaic#test`, with the enumeration guard GREEN followed by `FAIL: runtime pane omitted or changed generated environment keys: MOSAIC_GIT_IDENTITY`.
+- Restored the launch entry. The canonical `test:framework-shell` chain then reached both newly wired suites and printed both GREEN markers before the known unrelated #973 host-only `BASH_LINENO` abort.
+- An actual provider PR workflow on the intentionally broken mutant is **NOT MEASURED**: the one-push constraint forbids pushing a red mutant and then a repaired head. Local execution proves the exact PR workflow command and dependency chain go RED on the subject deletion; CI on the repaired pushed head remains canonical.
+
+### Workflow population
+
+- **DEFINED:** 3 workflows (`ci.yml`, `ci-image.yml`, `publish.yml`).
+- **ELIGIBLE for `pull_request`:** 1/3 (`ci.yml`), based on top-level `when:` clauses.
+- **REPORTED:** Round-1 exact-head provider read reported 1/1 eligible context (`ci/woodpecker/pr/ci`). Post-remediation-head reported count is **NOT MEASURED** by this seat because CI polling is prohibited; workflow definitions and eligibility did not change.
+
+### Independent remediation review
+
+- First Round-2 review identified a CI-image blocker: the newly wired launcher suite used Perl, which the Alpine CI base does not install.
+- Replaced the suite's three Perl-only fixture mutations with POSIX/BusyBox-compatible `sed -i` substitutions; production behavior and assertions are unchanged.
+- Codex re-review: **APPROVE**, confidence 0.93, no findings.
+
+### Vitest denominator reconciliation
+
+The PR's `311/311` is correct for its explicitly named six-file command at both the original and remediation worktrees:
+
+- generated environment boundary: 24
+- fleet documentation: 23
+- Tess service profile: 6
+- fleet regen command: 27
+- fleet agent CRUD command: 22
+- fleet command: 209
+- total: **311**
+
+Review 97 reported 312/312 without naming its six files. That is a different or miscounted population and cannot replace the command-scoped 311 denominator; the PR follow-up will name the exact files and arithmetic.
+
+## Round 3 — Alpine stale-marker portability
+
+### Objective and plan
+
+- Replace the GNU-only relative-date fixture with a deterministic POSIX/BusyBox timestamp while preserving the required stale-marker assertion.
+- Re-run the launcher suite in the canonical `ci-base:latest` Alpine image, then run applicable repository gates and independent review.
+- Update the PR body to name the repeated GNU-host/Alpine-CI portability pattern, run the mandatory queue guard, push once, verify provider attribution, and stop without CI polling.
+- Working budget: 8K tokens; scope is one fixture line plus delivery evidence. No production behavior changes.
+
+### RED-first evidence
+
+Before the fix, the canonical CI image command
+`docker run --rm -v "$PWD:/work" -w /work git.mosaicstack.dev/mosaicstack/stack/ci-base:latest bash packages/mosaic/framework/tools/fleet/test-start-agent-session.sh`
+exited 1 at the stale-marker setup with exact BusyBox output
+`touch: invalid date '10 seconds ago'`. The prior fresh-marker assertions had already executed, matching pipeline 2233's failure location.
+
+### Root cause and fix
+
+The test used GNU `touch -d` relative-date parsing although the PR workflow runs on Alpine/BusyBox. The fixture now uses POSIX `touch -t 200001010000.00`, a fixed timestamp that is unconditionally stale; the stale assertion remains mandatory and was not made tolerant of missing timestamp metadata.
+
+### Structural pattern
+
+This is the third GNU-host/Alpine-CI portability defect in the lane: GNU `grep` multi-match counting, Perl-only fixture mutation, and GNU `touch -d` date parsing. The repeated cause is shell suites authored on a GNU host but executed in an Alpine CI image; durable prevention belongs in CI-image execution or portability lint, not assertion weakening.
+
+### GREEN and quality evidence
+
+- Focused launcher suite in `ci-base:latest`: exit 0, `ok - start-agent-session generated environment boundary`.
+- Canonical test step in `ci-base:latest` with the pipeline's `pgvector/pgvector:pg17` service, readiness check, migration, and `pnpm test`: exit 0; 46/46 Turbo tasks; Mosaic 81/81 files and 1510/1510 tests; Gateway 57 passed/5 skipped files and 629 passed/11 skipped tests; enumeration 49 population / 32 enumerated / 18 signed exclusions / 45 named surfaces.
+- The first image-only `pnpm test` attempt lacked the pipeline PostgreSQL service and failed only on connection refusal after the launcher suite was GREEN. The rerun supplied the canonical service precondition and passed.
+- Canonical-image baseline: typecheck 45/45 tasks, lint 25/25 tasks, format check GREEN; `git diff --check` GREEN.
+- Independent Codex code review: APPROVE, confidence 0.96, 2/2 Round-3 files, no findings.
+- Independent Codex security review: risk none, confidence 0.99, 2/2 Round-3 files, no findings.
+
+### Re-derived inventory and denominators
+
+- Round-3 git delta: **2/2 files** — launcher suite and task scratchpad; 25 insertions / 1 deletion before evidence finalization.
+- Full PR path inventory against `origin/main` at `85d2108e`: **19/19 changed paths**; Round 3 adds no new PR path.
+- Workflow definition population: **1/3 pull-request-eligible** (`ci.yml` of `ci.yml`, `ci-image.yml`, `publish.yml`).
+- Do not re-litigate the settled 311/312 populations; both are valid for their separately named Tess6 and CRUD-core7 sets.
+
+## Round 4 — bound stale-marker observation
+
+### Objective and plan
+
+- Make the heartbeat assertion discriminate an initially stale native marker from a fresh marker without changing the production staleness threshold or shortening the polling window.
+- Freeze only the sidecar's numeric observation clock during the stale-fixture arm so elapsed assertion time cannot turn a fresh mutant stale.
+- Prove two independent mutants RED: disable production stale-marker detection while retaining the stale fixture; replace the stale fixture with a fresh marker. Restore the tree and prove GREEN in the canonical Alpine image.
+- Re-derive the changed-path inventory, run applicable quality and independent review gates, commit with environment-only author/committer identity, queue-guard, push once, verify provider attribution using curl stdin config, and stop without CI polling.
+- Working budget: 8K tokens. Scope is the launcher test and its scratchpad evidence; production launcher behavior remains unchanged.
+
+### Root cause and bounded observation
+
+The 30 × 0.1-second assertion window overlaps the production `now - marker > interval * 2 + 1` threshold at interval 1. Depending on second boundaries and load, a fresh marker can age past the threshold before the assertion ends. A focused pre-fix fresh-mutant attempt returned RED while Review 101's full-suite run returned GREEN; the differing result is itself timing dependence, not a discriminating assertion.
+
+The test now supplies a fixed numeric epoch only to the stale-fixture sidecar. Its real marker mtime is still read from the filesystem, but assertion runtime cannot advance `now`. Date formatting still delegates to the image's real `/bin/date`. Neither the production threshold nor the 30 × 0.1-second polling window changed.
+
+### Two-mutant RED / restored GREEN
+
+All three runs used `git.mosaicstack.dev/mosaicstack/stack/ci-base:latest`:
+
+1. **Stale-detection mutant RED:** replaced only the production stale-age predicate with `false` while retaining the fixed stale marker; suite exit 1 with `FAIL: heartbeat sidecar did not resume after native marker became stale or absent`.
+2. **Fresh-marker mutant RED:** replaced only `touch -t 200001010000.00` with fresh `touch`; suite exit 1 with the same failed stale-resumption assertion. The fixed observation epoch kept the mutant fresh throughout all 30 polls.
+3. **Restored tree GREEN:** suite exit 0 with `ok - start-agent-session generated environment boundary`.
+
+### Re-derived inventory
+
+- Round-4 delta: **2/2 files** — launcher test plus task scratchpad; production launcher delta is empty.
+- Full PR inventory against `origin/main`: **19/19 paths**; Round 4 adds no path.
+- Production stale threshold remains `now - marker > iv * 2 + 1`; assertion polling remains 30 × 0.1 seconds.
+- Review 101's confirmed enumeration/workflow/CI and attribution evidence is accepted without re-polling or re-derivation.
+
+## Residual risk
+
+- Landing on `main` does not update the currently installed host launcher. Host framework installation/reseed and Jarvis live-seat validation are separate downstream events.
+- Canonical CI result is pending and will not be polled by this seat.
@@ -0,0 +1,97 @@
+# #1098 — Framework shell portability / red main
+
+## Objective
+
+Restore terminal-green `main` by making the `test-start-agent-session.sh` clean-environment assertion semantic and portable without removing either newly enumerated framework-shell suite.
+
+## Scope
+
+- Tracking issue: `mosaicstack/stack#1098`
+- Branch: `fix/framework-shell-portability`
+- Base: `origin/main` at `4fa2768962702d53e16e8b67ee6ad52ebcb0910e`
+- Primary file: `packages/mosaic/framework/tools/fleet/test-start-agent-session.sh`
+- Requirements source: `docs/PRD.md` § Framework shell assertion portability (#1098)
+- Out of scope: deployed files under `~/.config/mosaic`, pnpm-store cleanup, checkout deletion, and changes to the launcher’s `/usr/bin/env -i` behavior.
+
+## Acceptance criteria
+
+1. The test inspects the captured NUL-delimited tmux argv semantically and accepts an adjacent `/usr/bin/env`, `-i` pair regardless of trailing payload size or pipe scheduling.
+2. Missing `/usr/bin/env`, missing `-i`, and non-adjacent `-i` remain failures.
+3. Failure output includes the observed argv records with stable indexes and shell escaping; it exposes no credentials because this fixture supplies only generated non-secret launch data.
+4. The focused suite passes on the dev host and in the repository CI image; the blocking PR/main pipeline returns terminal green.
+5. Independent review passes; PR is squash-merged and #1098 is closed only after merged-main CI is terminal green.
+
+## Budget
+
+- ASSUMPTION: 30K-token working budget; rationale: one shell-test defect plus full PR/CI lifecycle.
+- Auto-reduction: focused shell and package gates first; rely on canonical Woodpecker for the full monorepo suite rather than duplicating a dependency install under constrained `/home`.
+- Disk baseline before clone/build: `/home` 7.1G free (99% used), `/tmp` 2.4G free (92% used).
+
+## Investigation
+
+### First-hand CI evidence
+
+- Public log: `GET https://ci.mosaicstack.dev/api/repos/47/logs/2269/53041`
+- Decoded 1,436 entries (11 null `data` entries treated as empty log rows), 190,756 bytes.
+- Failure: `FAIL: pane command did not clear its environment` immediately after the expected pane-PID warning.
+- BusyBox primitives, complete assertion pipeline, real CI image, stale/current image digests, Turbo cache masking, gateway failure, and heartbeat-sidecar concurrent writing were independently excluded.
+
+### Root cause
+
+The assertion ends in:
+
+```bash
+printf '%s\n' "$pane_args" | tail -n +"$after_pane_env" | grep -qxF -- '-i'
+```
+
+The script has `set -o pipefail`. `grep -q` exits as soon as it finds the valid `-i` record. Upstream `tail`/`printf` can then receive SIGPIPE, making the aggregate pipeline nonzero even though grep returned 0 and the semantic property is true. This depends on payload size, pipe capacity, and scheduling, explaining a local/image pass with a CI failure.
+
+Discriminating stress control with `/usr/bin/env` followed immediately by `-i`:
+
+- 8,192-byte trailing payload: `printf=0 tail=0 grep=0`, aggregate 0.
+- 16,384-byte trailing payload: `printf=0 tail=141 grep=0`, aggregate 141.
+- 32,768+ bytes: `printf=141 tail=141 grep=0`, aggregate 141.
+- A full-reading `grep -xF` control remained 0 for every payload.
+
+This is a third branch omitted by the earlier present-vs-corrupted split: the pair can be present and intact while `pipefail` reports an upstream SIGPIPE.
+
+## TDD plan
+
+1. RED: preserve the one-off stress reproducer above and add an automated large-argv semantic regression that fails under the current pipeline implementation.
+2. GREEN: parse the authoritative NUL-delimited capture into a Bash array and search for an adjacent `/usr/bin/env`, `-i` pair without a short-circuit pipeline.
+3. Add negative controls for missing, detached, and reversed tokens.
+4. On failure, print indexed `%q` argv records before returning nonzero.
+5. Run focused suite, mutation controls, shell syntax/format checks, then repository baseline gates feasible without dependency installation.
+6. Independent review, queue guard, push, PR, CI, coordinator merge authorization, squash merge, merged-main CI, issue close.
+
+## Progress
+
+- [x] Checkout created and based on `origin/main` `4fa27689`.
+- [x] CI log decoded directly.
+- [x] Root-cause stress control reproduced semantic match + aggregate pipeline failure.
+- [x] RED evidence: intact `/usr/bin/env`, `-i` fixture produced component statuses `0/141/0` and aggregate 141 under the former `grep -q` pipeline; full-reading semantic control stayed 0.
+- [x] GREEN implementation: direct NUL-argv adjacency parser, indexed diagnostics, and full-reading scalar predicates replace all load-bearing early-exit pipelines in this test.
+- [x] Baseline/situational tests:
+  - focused launcher suite: PASS on GNU host and cached Alpine CI image;
+  - paired `test-fleet-units.sh`: PASS;
+  - enumeration guard: PASS (`population=53`, `enumerated=36`, `excluded=18`), 14/14 mutation needles;
+  - `bash -n`, ShellCheck, `git diff --check`: PASS;
+  - static denominator after change: zero load-bearing `grep -q`/`head`/`-m1` pipeline candidates in `test-start-agent-session.sh`;
+  - delete-the-subject mutation removing production `-i`: RED with 78 indexed argv records, byte count, and explicit boundary failure.
+- [x] Independent review:
+  - first Codex review: request changes — negative fixtures did not each assert diagnostics;
+  - remediation: centralized predicate + diagnostic wrapper and exercised all four negative fixtures;
+  - second Codex review: APPROVE, 0 blockers/should-fix/suggestions;
+  - Codex security review: risk none, 0 findings.
+- [ ] PR CI, formal fleet review, merge, merged-main CI, issue closure.
+
+## Documentation disposition
+
+- Updated canonical `docs/PRD.md` with FSP requirements and acceptance criteria.
+- This is an internal test/reliability change with no API, user workflow, deployment, navigation, or publishing-surface change; no user/admin/API/sitemap update is required.
+- `docs/TASKS.md` remains unchanged because the project contract makes it orchestrator-only.
+
+## Risks
+
+- The CI failure did not print its captured argv, so the exact CI payload is unavailable. The stress control proves the assertion is non-portable and can emit the exact false verdict; branch CI is the canonical confirmation that replacing it resolves pipeline 2269’s failure class.
+- Printing fixture argv is safe only while this test’s projection remains non-secret. The diagnostic must stay scoped to the test capture and shell-escaped.
@@ -0,0 +1,33 @@
+# #1099 — pipefail + early-exit sweep
+
+## Scope and decisions
+
+- Baseline `df4c591ab42aa1ae62c12935fdc0e772684864a0`, after #1100 removed its 35 sites.
+- Split into review-sized non-closing tranches: runtime/general; tmux/git/quality tests; wake validation/tests.
+- Do not equate class membership with demonstrated risk. Do not use payload size or pipeline stage count as a safety proxy.
+- Preserve the issue's withdrawn findings for `qa-hook-stdin.sh` and the two fresh-directory `pnpm pack` lookups. Fix `install.sh:312` because malformed multi-root input must reach its named handler.
+
+## Tranche 1 TDD
+
+RED-first control: `node --test scripts/pipefail-early-exit.test.mjs` reported exactly 26 non-accepted runtime/general sites, including `install.sh:312`, and exited 1. A checked-in fixture generated from immutable baseline `df4c591a` records all 26 normalized sites; the control passes every fixture entry through the same scanner, asserts exact identity/count/uniqueness, and separately requires zero findings in the current tree. It also inventories accepted sites rather than silently excluding whole files.
+
+Construction choices:
+
+- here-string/file redirection for scalar grep assertions;
+- full capture then parameter expansion for first-line selection;
+- arrays/`mapfile` for complete populations;
+- direct jq/awk/grep selection where one tool can express the property;
+- no `|| true` added to a load-bearing assertion.
+
+Site-by-site verdicts: `docs/reports/quality/1099-pipefail-sweep.md`.
+
+## Verification so far
+
+- `bash -n` on every changed shell script: pass.
+- structural Node control: pass.
+- `test-mutate-push-guard.sh`: 8/8 pass.
+- `test-send-message-verdict.sh`: 3/3 pass.
+- `test-send-message-socket.sh`: pass.
+- Independent review 143 found two semantic regressions: a help-probe `|| true` changed the failure truth table, and an unguarded Git capture changed non-Git data-dir behavior from rc 0 + JSON to silent rc 128. Both received RED-first regressions before correction; help status is now separate and required, and Git status remains condition-guarded.
+- Wake detector/reconcile/digest/preimage suites terminate at their existing fail-closed #973 `BASH_LINENO` environment probe (exit 97, observed `[3 5]`, expected `[3 4]`) before subject tests. No bypass or skip was used; canonical CI remains required.
+- ShellCheck reports only pre-existing source-following, unused-variable, and untouched `ls | head` findings; no new diagnostic was introduced.
@@ -112,6 +112,7 @@ EOF
  chmod 700 "$AGENT_HOME/fleet/agents"
  cat > "$AGENT_HOME/fleet/agents/$AGENT_NAME.env.generated" <<EOF
 MOSAIC_AGENT_NAME=$AGENT_NAME
+MOSAIC_GIT_IDENTITY=$AGENT_NAME
 MOSAIC_AGENT_CLASS=code
 MOSAIC_AGENT_RUNTIME=pi
 MOSAIC_AGENT_MODEL=
@@ -153,24 +153,7 @@ if [[ $link_only -eq 1 ]]; then
  exit 0
 fi

-# Skills are linked into the MOSAIC-OWNED harness homes, never a base install.
-# Paths mirror the config-dir env vars the launcher injects (HARNESS_HOME_ENV in
-# commands/launch.js):
-#   claude   CLAUDE_CONFIG_DIR      -> <home>/skills
-#   pi       PI_CODING_AGENT_DIR    -> <home>/skills   (replaces ~/.pi/agent)
-#   codex    CODEX_HOME             -> <home>/skills
-#   opencode XDG_CONFIG_HOME        -> <home>/opencode/skills  (XDG adds a level)
 link_targets=(
-  "$MOSAIC_HOME/.claude/skills"
-  "$MOSAIC_HOME/.codex/skills"
-  "$MOSAIC_HOME/.opencode/opencode/skills"
-  "$MOSAIC_HOME/.pi/skills"
-)
-
-# Pre-isolation installs planted the same symlink farm directly in the operator's
-# base installs. Those are now orphaned: the launcher no longer reads them, but
-# they persist and make a "clean" base install look mosaic-managed.
-legacy_link_targets=(
  "$HOME/.claude/skills"
  "$HOME/.codex/skills"
  "$HOME/.config/opencode/skills"
@@ -262,72 +245,13 @@ prune_stale_links_in_target() {
    # -m resolves lexical dangling targets too. If resolution fails, ownership
    # is unproven and the link must be preserved.
    resolved="$(readlink -m "$link_path" 2>/dev/null || true)"
-    # $canonical_real must be length-checked BEFORE use as a prefix: if it were
-    # ever empty, "$resolved" == "$canonical_real/"* collapses to == "/"* and
-    # matches every absolute path. Combined with the is_mosaic_skill_name skip
-    # above, that inverts the function precisely — it would delete exactly the
-    # FOREIGN symlinks and keep the mosaic ones. (#1087, reported by mos-claude.)
-    if [[ -n "$resolved" && -n "$canonical_real" && "$resolved" == "$canonical_real/"* ]]; then
+    if [[ -n "$resolved" && "$resolved" == "$canonical_real/"* ]]; then
      rm -f "$link_path"
      echo "[mosaic-skills] Removed stale retired skill link: $link_path"
    fi
  done < <(find "$target_dir" -mindepth 1 -maxdepth 1 -type l -print0)
 }

-# Remove mosaic-owned symlinks left in a base install by a pre-isolation sync.
-#
-# Ownership is proven by RESOLUTION, not by name: only links resolving inside the
-# canonical or local skills dirs are removed. Anything else — a real directory, a
-# link elsewhere, an unresolvable link — is left untouched. This mirrors the
-# refusal in commands/skill.js ("only symlinks pointing inside the Mosaic skills
-# directory are managed") and preserves e.g. codex's own `.system` dir.
-#
-# The directory itself is kept: mosaic-doctor warns when ~/.pi/agent/skills is
-# missing, and an empty dir is the correct end state, not an absent one.
-cleanup_legacy_target() {
-  local target_dir="$1"
-  local removed=0 kept=0
-
-  [[ -d "$target_dir" ]] || return 0
-
-  while IFS= read -r -d '' link_path; do
-    local resolved owned=0
-    resolved="$(readlink -m "$link_path" 2>/dev/null || true)"
-
-    # Guard the empty-prefix trap: an unset *_real would make "$resolved" == "/"*
-    # match every absolute path and delete foreign links.
-    if [[ -n "$resolved" ]]; then
-      if [[ -n "$canonical_real" && "$resolved" == "$canonical_real/"* ]]; then
-        owned=1
-      elif [[ -n "$local_real" && "$resolved" == "$local_real/"* ]]; then
-        owned=1
-      fi
-    fi
-
-    if [[ $owned -eq 1 ]]; then
-      rm -f "$link_path"
-      removed=$((removed + 1))
-    else
-      kept=$((kept + 1))
-    fi
-  done < <(find "$target_dir" -mindepth 1 -maxdepth 1 -type l -print0)
-
-  if [[ $removed -gt 0 ]]; then
-    echo "[mosaic-skills] Legacy cleanup: removed $removed mosaic symlink(s) from $target_dir (preserved $kept foreign)"
-  fi
-}
-
-for legacy in "${legacy_link_targets[@]}"; do
-  # Skip anything that is also a current target, so isolation can never
-  # self-destruct if the two lists ever overlap.
-  skip=0
-  for target in "${link_targets[@]}"; do
-    [[ "$legacy" == "$target" ]] && skip=1
-  done
-  [[ $skip -eq 1 ]] && continue
-  cleanup_legacy_target "$legacy"
-done
-
 for target in "${link_targets[@]}"; do
  mkdir -p "$target"

@@ -69,7 +69,7 @@ if [[ -n "$GROUP" ]]; then
  group_response=$(curl -sk \
    -H "Authorization: Bearer $TOKEN" \
    "${AUTHENTIK_URL}/api/v3/core/groups/?search=${GROUP}")
-  group_pk=$(echo "$group_response" | jq -r ".results[] | select(.name == \"$GROUP\") | .pk" | head -1)
+  group_pk=$(jq -r "first(.results[] | select(.name == \"$GROUP\") | .pk) // empty" <<<"$group_response")
  if [[ -n "$group_pk" ]]; then
    payload=$(echo "$payload" | jq --arg gk "$group_pk" '. + {groups: [$gk]}')
  else
@@ -97,7 +97,7 @@ is_sensitive_key() {

 is_generated_key() {
  case "$1" in
-    MOSAIC_AGENT_NAME|MOSAIC_AGENT_CLASS|MOSAIC_AGENT_RUNTIME|MOSAIC_AGENT_MODEL|MOSAIC_AGENT_REASONING|MOSAIC_AGENT_TOOL_POLICY|MOSAIC_AGENT_WORKDIR|MOSAIC_TMUX_SOCKET) return 0 ;;
+    MOSAIC_AGENT_NAME|MOSAIC_GIT_IDENTITY|MOSAIC_AGENT_CLASS|MOSAIC_AGENT_RUNTIME|MOSAIC_AGENT_MODEL|MOSAIC_AGENT_REASONING|MOSAIC_AGENT_TOOL_POLICY|MOSAIC_AGENT_WORKDIR|MOSAIC_TMUX_SOCKET) return 0 ;;
    *) return 1 ;;
  esac
 }
@@ -114,6 +114,7 @@ validate_generated_value() {
  local value="$2"
  case "$key" in
    MOSAIC_AGENT_NAME) safe_agent_name "$value" || fail_env unsafe-agent-name "$key" "$value" ;;
+    MOSAIC_GIT_IDENTITY) safe_agent_name "$value" || fail_env unsafe-git-identity "$key" "$value" ;;
    MOSAIC_AGENT_CLASS) safe_policy_name "$value" || fail_env unsafe-class "$key" "$value" ;;
    MOSAIC_AGENT_RUNTIME)
      case "$value" in claude|codex|opencode|pi) ;; *) fail_env unsupported-runtime "$key" "$value" ;; esac
@@ -175,7 +176,7 @@ load_environment_file() {

 load_environment_file "$GENERATED_ENV" generated
 for required_key in \
-  MOSAIC_AGENT_NAME MOSAIC_AGENT_CLASS MOSAIC_AGENT_RUNTIME MOSAIC_AGENT_MODEL \
+  MOSAIC_AGENT_NAME MOSAIC_GIT_IDENTITY MOSAIC_AGENT_CLASS MOSAIC_AGENT_RUNTIME MOSAIC_AGENT_MODEL \
  MOSAIC_AGENT_REASONING MOSAIC_AGENT_TOOL_POLICY MOSAIC_AGENT_WORKDIR MOSAIC_TMUX_SOCKET; do
  [ -n "${GENERATED_VALUES[$required_key]+set}" ] || fail_env missing-key "$required_key" ''
 done
@@ -183,12 +184,15 @@ load_environment_file "$LOCAL_ENV" local

 [ "${GENERATED_VALUES[MOSAIC_AGENT_NAME]}" = "$AGENT_NAME" ] || \
  fail_env agent-name-mismatch MOSAIC_AGENT_NAME "${GENERATED_VALUES[MOSAIC_AGENT_NAME]}"
+[ "${GENERATED_VALUES[MOSAIC_GIT_IDENTITY]}" = "$AGENT_NAME" ] || \
+  fail_env git-identity-mismatch MOSAIC_GIT_IDENTITY "${GENERATED_VALUES[MOSAIC_GIT_IDENTITY]}"

 MOSAIC_TMUX_SOCKET=${GENERATED_VALUES[MOSAIC_TMUX_SOCKET]}
 MOSAIC_AGENT_RUNTIME=${GENERATED_VALUES[MOSAIC_AGENT_RUNTIME]}
 MOSAIC_AGENT_MODEL=${GENERATED_VALUES[MOSAIC_AGENT_MODEL]}
 MOSAIC_AGENT_REASONING=${GENERATED_VALUES[MOSAIC_AGENT_REASONING]}
 MOSAIC_AGENT_WORKDIR=${GENERATED_VALUES[MOSAIC_AGENT_WORKDIR]}
+MOSAIC_GIT_IDENTITY=${GENERATED_VALUES[MOSAIC_GIT_IDENTITY]}
 MOSAIC_AGENT_CLASS=${GENERATED_VALUES[MOSAIC_AGENT_CLASS]}
 MOSAIC_AGENT_TOOL_POLICY=${GENERATED_VALUES[MOSAIC_AGENT_TOOL_POLICY]}
 MOSAIC_RUNTIME_BIN=${LOCAL_VALUES[MOSAIC_RUNTIME_BIN]:-}
@@ -343,6 +347,7 @@ LAUNCH_ENV=(
  "PATH=$PANE_PATH"
  "MOSAIC_HOME=$MOSAIC_HOME"
  "MOSAIC_AGENT_NAME=$AGENT_NAME"
+  "MOSAIC_GIT_IDENTITY=$MOSAIC_GIT_IDENTITY"
  "MOSAIC_AGENT_CLASS=$MOSAIC_AGENT_CLASS"
  "MOSAIC_AGENT_RUNTIME=$MOSAIC_AGENT_RUNTIME"
  "MOSAIC_AGENT_MODEL=$MOSAIC_AGENT_MODEL"
@@ -14,6 +14,82 @@ fail() {
  exit 1
 }

+pane_command_clears_environment() {
+  local calls_file="$1"
+  local -a argv=()
+  local index
+  mapfile -d '' -t argv < "$calls_file"
+  for ((index = 0; index + 1 < ${#argv[@]}; index++)); do
+    if [ "${argv[$index]}" = /usr/bin/env ] && [ "${argv[$((index + 1))]}" = -i ]; then
+      return 0
+    fi
+  done
+  return 1
+}
+
+print_pane_argv() {
+  local calls_file="$1"
+  local -a argv=()
+  local bytes index
+  mapfile -d '' -t argv < "$calls_file"
+  bytes=$(wc -c < "$calls_file")
+  printf 'observed pane argv: records=%s bytes=%s\n' "${#argv[@]}" "$bytes" >&2
+  for ((index = 0; index < ${#argv[@]}; index++)); do
+    printf '  [%03d] %q\n' "$index" "${argv[$index]}" >&2
+  done
+}
+
+check_pane_environment_boundary() {
+  local calls_file="$1"
+  if pane_command_clears_environment "$calls_file"; then
+    return 0
+  fi
+  print_pane_argv "$calls_file"
+  return 1
+}
+
+contains_literal() {
+  grep -F -- "$2" <<< "$1" >/dev/null
+}
+
+contains_line() {
+  grep -xF -- "$2" <<< "$1" >/dev/null
+}
+
+# Portability regression: inspect the authoritative NUL-delimited argv instead
+# of piping a newline reconstruction through `grep -q` under pipefail. The old
+# pipeline could report failure after a successful match when an upstream
+# producer received SIGPIPE. A large trailing argument keeps that failure class
+# covered without making stream size part of the semantic contract.
+PORTABILITY_CALLS="$ROOT/portability-calls"
+printf -v PORTABILITY_PADDING '%*s' 32768 ''
+PORTABILITY_PADDING=${PORTABILITY_PADDING// /x}
+printf '%s\0' /usr/bin/env -i "$PORTABILITY_PADDING" > "$PORTABILITY_CALLS"
+pane_command_clears_environment "$PORTABILITY_CALLS" || \
+  fail "valid large pane argv was rejected by the environment-boundary assertion"
+
+assert_pane_boundary_rejected() {
+  local case_name="$1"
+  local expected_records="$2"
+  local diagnostic
+  if diagnostic=$(check_pane_environment_boundary "$PORTABILITY_CALLS" 2>&1); then
+    fail "pane boundary accepted invalid $case_name fixture"
+  fi
+  contains_literal "$diagnostic" "records=$expected_records bytes=" || \
+    fail "pane argv diagnostic omitted counts for $case_name fixture"
+  contains_literal "$diagnostic" '[000]' || \
+    fail "pane argv diagnostic omitted indexed arguments for $case_name fixture"
+}
+
+printf '%s\0' tmux -i > "$PORTABILITY_CALLS"
+assert_pane_boundary_rejected missing-env 2
+printf '%s\0' /usr/bin/env HOME=/untrusted > "$PORTABILITY_CALLS"
+assert_pane_boundary_rejected missing-i 2
+printf '%s\0' /usr/bin/env HOME=/untrusted -i > "$PORTABILITY_CALLS"
+assert_pane_boundary_rejected non-adjacent-i 3
+printf '%s\0' -i /usr/bin/env > "$PORTABILITY_CALLS"
+assert_pane_boundary_rejected reversed-boundary 2
+
 cat > "$FAKE_BIN/tmux" <<'SHIM'
 #!/usr/bin/env bash
 set -euo pipefail
@@ -62,6 +138,19 @@ env -0 > "${MOSAIC_HOME:?}/fleet/pane-environment"
 SHIM
 chmod +x "$FAKE_BIN/mosaic"

+# Freeze numeric epoch reads only when a test arm supplies an observation bound.
+# Formatting reads still use the real BusyBox/POSIX date implementation.
+cat > "$FAKE_BIN/date" <<'SHIM'
+#!/usr/bin/env bash
+set -euo pipefail
+if [ -n "${MOSAIC_TEST_FIXED_EPOCH:-}" ] && [ "${1:-}" = '+%s' ]; then
+  printf '%s\n' "$MOSAIC_TEST_FIXED_EPOCH"
+  exit 0
+fi
+exec /bin/date "$@"
+SHIM
+chmod +x "$FAKE_BIN/date"
+
 write_generated() {
  local home="$1"
  local agent="$2"
@@ -71,6 +160,7 @@ write_generated() {
  chmod 600 "$home/fleet/run/holder-owner"
  cat > "$home/fleet/agents/$agent.env.generated" <<EOF
 MOSAIC_AGENT_NAME=$agent
+MOSAIC_GIT_IDENTITY=$agent
 MOSAIC_AGENT_CLASS=code
 MOSAIC_AGENT_RUNTIME=pi
 MOSAIC_AGENT_MODEL=openai-codex/gpt-5.6-sol
@@ -88,6 +178,7 @@ run_start() {
  local agent="$2"
  HOME="$home" PATH="$FAKE_BIN:$PATH" MOSAIC_TEST_TMUX_CALLS="$TMUX_CALLS" \
    MOSAIC_TEST_PANE_PID="${MOSAIC_TEST_PANE_PID:-}" \
+    MOSAIC_TEST_FIXED_EPOCH="${MOSAIC_TEST_FIXED_EPOCH:-}" \
    MOSAIC_TEST_HOME="$home" \
    MOSAIC_TEST_FLEET_OWNER=123e4567-e89b-12d3-a456-426614174000 \
    MOSAIC_HOME="$home" "$START" "$agent"
@@ -100,19 +191,55 @@ AGENT_VALID="coder0"
 write_generated "$HOME_VALID" "$AGENT_VALID"
 run_start "$HOME_VALID" "$AGENT_VALID"
 valid_args=$(tr '\0' '\n' < "$TMUX_CALLS")
-echo "$valid_args" | grep -qF new-session || fail "valid generated projection did not reach tmux"
-echo "$valid_args" | grep -qF 'mosaic' || fail "fixed mosaic launcher command missing"
-echo "$valid_args" | grep -qF 'yolo' || fail "fixed yolo launcher command missing"
-echo "$valid_args" | grep -qF 'pi' || fail "roster runtime missing"
-if echo "$valid_args" | grep -qF 'bash -c'; then
+contains_literal "$valid_args" new-session || fail "valid generated projection did not reach tmux"
+contains_literal "$valid_args" mosaic || fail "fixed mosaic launcher command missing"
+contains_literal "$valid_args" yolo || fail "fixed yolo launcher command missing"
+contains_literal "$valid_args" pi || fail "roster runtime missing"
+if contains_literal "$valid_args" 'bash -c'; then
  fail "launcher constructed a shell command payload"
 fi

 # The pane must start through an absolute clean-environment boundary. Its
 # runtime command remains an argv vector, but no holder/session environment
 # control variable can pass through the pane command.
-echo "$valid_args" | grep -qxF '/usr/bin/env' || fail "pane does not use absolute env"
-echo "$valid_args" | grep -qxF -- '-i' || fail "pane environment is not cleared"
+check_pane_environment_boundary "$TMUX_CALLS" || \
+  fail "pane command did not use an adjacent /usr/bin/env -i boundary"
+
+# Git identity is generated authority, not an optional or independently mutable
+# local value. Each invalid form must fail before fake tmux receives a call.
+assert_git_identity_rejected() {
+  local case_name="$1"
+  local expected_code="$2"
+  local home="$ROOT/git-identity-$case_name"
+  local agent="coder-git-identity-$case_name"
+  local generated="$home/fleet/agents/$agent.env.generated"
+  write_generated "$home" "$agent"
+
+  case "$case_name" in
+    missing) grep -v '^MOSAIC_GIT_IDENTITY=' "$generated" > "$generated.next" && mv "$generated.next" "$generated" ;;
+    unsafe) sed -i 's|^MOSAIC_GIT_IDENTITY=.*$|MOSAIC_GIT_IDENTITY=bad/identity|' "$generated" ;;
+    mismatch) sed -i 's|^MOSAIC_GIT_IDENTITY=.*$|MOSAIC_GIT_IDENTITY=other-agent|' "$generated" ;;
+    local-shadow)
+      printf 'MOSAIC_GIT_IDENTITY=%s\n' "$agent" > "$home/fleet/agents/$agent.env.local"
+      chmod 600 "$home/fleet/agents/$agent.env.local"
+      ;;
+    *) fail "unknown Git identity rejection case: $case_name" ;;
+  esac
+  chmod 600 "$generated"
+
+  : > "$TMUX_CALLS"
+  if output=$(run_start "$home" "$agent" 2>&1); then
+    fail "Git identity case $case_name was accepted"
+  fi
+  [ ! -s "$TMUX_CALLS" ] || fail "tmux ran before Git identity $case_name rejection"
+  contains_literal "$output" "code=$expected_code" || \
+    fail "Git identity $case_name diagnostic omitted code $expected_code"
+}
+
+assert_git_identity_rejected missing missing-key
+assert_git_identity_rejected unsafe unsafe-git-identity
+assert_git_identity_rejected mismatch git-identity-mismatch
+assert_git_identity_rejected local-shadow generated-key-shadow

 # The generated-file parent is a security boundary too: even a private regular
 # file is untrusted if its parent can be replaced or written by another user.
@@ -125,7 +252,7 @@ if output=$(run_start "$HOME_UNSAFE_PARENT" coder-parent 2>&1); then
  fail "generated file under a world-writable parent was accepted"
 fi
 [ ! -s "$TMUX_CALLS" ] || fail "tmux ran before unsafe parent rejection"
-echo "$output" | grep -qF 'code=unsafe-permissions' || fail "unsafe parent diagnostic missing"
+contains_literal "$output" 'code=unsafe-permissions' || fail "unsafe parent diagnostic missing"

 : > "$TMUX_CALLS"
 HOME_SYMLINK_PARENT="$ROOT/symlink-parent"
@@ -136,7 +263,7 @@ if output=$(run_start "$HOME_SYMLINK_PARENT" coder-symlink-parent 2>&1); then
  fail "generated file under a symlinked parent was accepted"
 fi
 [ ! -s "$TMUX_CALLS" ] || fail "tmux ran before symlinked parent rejection"
-echo "$output" | grep -qF 'code=unsafe-directory' || fail "symlinked parent diagnostic missing"
+contains_literal "$output" 'code=unsafe-directory' || fail "symlinked parent diagnostic missing"

 # Every managed ancestor is a boundary: MOSAIC_HOME, fleet, and agents. A
 # symlink or group/world-writable ancestor must fail before environment parsing,
@@ -174,8 +301,8 @@ assert_managed_ancestor_rejected() {
  fi
  [ ! -s "$TMUX_CALLS" ] || fail "tmux ran before $hazard $ancestor rejection"
  [ ! -e "$home/work" ] || fail "workdir was created before $hazard $ancestor rejection"
-  echo "$output" | grep -qF "code=unsafe-" || fail "managed ancestor diagnostic missing"
-  if echo "$output" | grep -qF 'key=MOSAIC_AGENT_COMMAND'; then
+  contains_literal "$output" 'code=unsafe-' || fail "managed ancestor diagnostic missing"
+  if contains_literal "$output" 'key=MOSAIC_AGENT_COMMAND'; then
    fail "environment parsing ran before $hazard $ancestor rejection"
  fi
 }
@@ -196,9 +323,9 @@ if output=$(run_start "$HOME_SHADOW" coder1 2>&1); then
  fail "generated-key shadow was accepted"
 fi
 [ ! -s "$TMUX_CALLS" ] || fail "tmux ran before generated-key shadow rejection"
-echo "$output" | grep -qF 'key=MOSAIC_AGENT_RUNTIME' || fail "shadow diagnostic omitted key"
-echo "$output" | grep -qF 'sha256=' || fail "shadow diagnostic omitted hash"
-if echo "$output" | grep -qF 'codex'; then
+contains_literal "$output" 'key=MOSAIC_AGENT_RUNTIME' || fail "shadow diagnostic omitted key"
+contains_literal "$output" 'sha256=' || fail "shadow diagnostic omitted hash"
+if contains_literal "$output" codex; then
  fail "shadow diagnostic leaked value"
 fi

@@ -214,9 +341,9 @@ if output=$(run_start "$HOME_COMMAND" coder2 2>&1); then
  fail "arbitrary command override was accepted"
 fi
 [ ! -s "$TMUX_CALLS" ] || fail "tmux ran before command rejection"
-echo "$output" | grep -qF 'key=MOSAIC_AGENT_COMMAND' || fail "command diagnostic omitted key"
-echo "$output" | grep -qF 'sha256=' || fail "command diagnostic omitted hash"
-if echo "$output" | grep -qF "$COMMAND_VALUE"; then
+contains_literal "$output" 'key=MOSAIC_AGENT_COMMAND' || fail "command diagnostic omitted key"
+contains_literal "$output" 'sha256=' || fail "command diagnostic omitted hash"
+if contains_literal "$output" "$COMMAND_VALUE"; then
  fail "command diagnostic leaked command value"
 fi

@@ -230,7 +357,7 @@ if output=$(run_start "$HOME_PERMS" coder3 2>&1); then
  fail "world-readable local input was accepted"
 fi
 [ ! -s "$TMUX_CALLS" ] || fail "tmux ran before permissions rejection"
-echo "$output" | grep -qF 'code=unsafe-permissions' || fail "permission diagnostic missing"
+contains_literal "$output" 'code=unsafe-permissions' || fail "permission diagnostic missing"

 # A unit/holder-like clean bootstrap must yield a pane with trusted HOME and
 # computed PATH only. The pane command itself must not carry loader, shell
@@ -260,25 +387,35 @@ PATH="$PANE_STALE_PATH" \
    MOSAIC_TEST_EXECUTE_PANE=1 \
    "$START" coder-pane-boundary
 pane_args=$(tr '\0' '\n' < "$TMUX_CALLS")
-echo "$pane_args" | grep -qxF "HOME=$PANE_TRUSTED_HOME" || \
+contains_line "$pane_args" "HOME=$PANE_TRUSTED_HOME" || \
  fail "pane did not restore trusted HOME"
-echo "$pane_args" | grep -qF "HOME=$PANE_STALE_HOME" && \
+contains_literal "$pane_args" "HOME=$PANE_STALE_HOME" && \
  fail "pane inherited stale HOME"
-echo "$pane_args" | grep -qF "$PANE_STALE_PATH" && fail "pane inherited stale PATH"
+contains_literal "$pane_args" "$PANE_STALE_PATH" && fail "pane inherited stale PATH"
 for blocked in LD_PRELOAD= BASH_ENV= MOSAIC_UNTRUSTED_SENTINEL=; do
-  echo "$pane_args" | grep -qF "$blocked" && fail "pane inherited $blocked"
+  contains_literal "$pane_args" "$blocked" && fail "pane inherited $blocked"
 done

-after_pane_env=$(printf '%s\n' "$pane_args" | grep -n -m1 -F '/usr/bin/env' | cut -d: -f1)
-[ -n "$after_pane_env" ] || fail "pane command did not use absolute env"
-printf '%s\n' "$pane_args" | tail -n +"$after_pane_env" | grep -qxF -- '-i' || \
-  fail "pane command did not clear its environment"
+check_pane_environment_boundary "$TMUX_CALLS" || \
+  fail "pane command did not use an adjacent /usr/bin/env -i boundary"
 pane_environment=$(tr '\0' '\n' < "$HOME_PANE_BOUNDARY/fleet/pane-environment")
-echo "$pane_environment" | grep -qxF "HOME=$PANE_TRUSTED_HOME" || \
+# Exercise the repository launcher at $START, not the independently installed
+# host copy. Set-compare every declared generated projection entry with the
+# launched process environment so a newly declared identity cannot be omitted
+# by a hand-maintained per-variable assertion.
+declared_generated_environment=$(sort "$HOME_PANE_BOUNDARY/fleet/agents/coder-pane-boundary.env.generated")
+missing_or_changed_generated_environment=$(comm -23 \
+  <(printf '%s\n' "$declared_generated_environment") \
+  <(printf '%s\n' "$pane_environment" | sort))
+if [ -n "$missing_or_changed_generated_environment" ]; then
+  missing_or_changed_keys=$(printf '%s\n' "$missing_or_changed_generated_environment" | cut -d= -f1 | paste -sd, -)
+  fail "runtime pane omitted or changed generated environment keys: $missing_or_changed_keys"
+fi
+contains_line "$pane_environment" "HOME=$PANE_TRUSTED_HOME" || \
  fail "runtime pane did not receive trusted HOME"
-echo "$pane_environment" | grep -qF "$PANE_STALE_PATH" && fail "runtime pane received stale PATH"
+contains_literal "$pane_environment" "$PANE_STALE_PATH" && fail "runtime pane received stale PATH"
 for blocked in LD_PRELOAD= BASH_ENV= MOSAIC_UNTRUSTED_SENTINEL=; do
-  echo "$pane_environment" | grep -qF "$blocked" && fail "runtime pane received $blocked"
+  contains_literal "$pane_environment" "$blocked" && fail "runtime pane received $blocked"
 done

 write_interaction_generated() {
@@ -290,6 +427,7 @@ write_interaction_generated() {
  chmod 600 "$home/fleet/run/holder-owner"
  cat > "$home/fleet/agents/$agent.env.generated" <<EOF
 MOSAIC_AGENT_NAME=$agent
+MOSAIC_GIT_IDENTITY=$agent
 MOSAIC_AGENT_CLASS=operator-interaction
 MOSAIC_AGENT_RUNTIME=pi
 MOSAIC_AGENT_MODEL=openai/gpt-5.6-sol
@@ -352,8 +490,12 @@ write_generated "$HOME_NATIVE_STALE" "coder-native-stale"
 write_heartbeat_local "$HOME_NATIVE_STALE" "coder-native-stale"
 STALE_HB="$HOME_NATIVE_STALE/run/coder-native-stale.hb"
 printf 'ts=native\npid=1\nstatus=busy\nmodel=stale-model\n' > "$STALE_HB"
-touch -d '10 seconds ago' "$STALE_HB.native"
-MOSAIC_TEST_PANE_PID=$$ run_start "$HOME_NATIVE_STALE" coder-native-stale
+touch -t 200001010000.00 "$STALE_HB.native"
+# Hold the sidecar's observation epoch constant: assertion runtime must not age
+# a fresh-marker mutant into the stale state that this fixture must distinguish.
+STALE_OBSERVATION_EPOCH=$(date +%s)
+MOSAIC_TEST_FIXED_EPOCH="$STALE_OBSERVATION_EPOCH" \
+  MOSAIC_TEST_PANE_PID=$$ run_start "$HOME_NATIVE_STALE" coder-native-stale
 wait_for_sidecar_status "$STALE_HB"

 HOME_NATIVE_ABSENT="$ROOT/native-absent"
@@ -374,22 +516,22 @@ if output=$(run_interaction "$HOME_INTERACTION_MALFORMED" interaction-malformed
  fail "interaction wrapper accepted malformed generated data"
 fi
 [ ! -s "$TMUX_CALLS" ] || fail "tmux ran before interaction strict-parser rejection"
-echo "$output" | grep -qF 'code=unknown-key' || fail "interaction did not use shared strict parser first"
+contains_literal "$output" 'code=unknown-key' || fail "interaction did not use shared strict parser first"

 # A syntactically valid but policy-incompatible projection reaches the pinned
 # interaction policy check only after strict parsing and never starts tmux.
 : > "$TMUX_CALLS"
 HOME_INTERACTION_POLICY="$ROOT/interaction-policy"
 write_interaction_generated "$HOME_INTERACTION_POLICY" "interaction-policy"
-perl -0pi -e 's/MOSAIC_AGENT_RUNTIME=pi/MOSAIC_AGENT_RUNTIME=codex/' \
+sed -i 's|^MOSAIC_AGENT_RUNTIME=pi$|MOSAIC_AGENT_RUNTIME=codex|' \
  "$HOME_INTERACTION_POLICY/fleet/agents/interaction-policy.env.generated"
 if output=$(run_interaction "$HOME_INTERACTION_POLICY" interaction-policy 2>&1); then
  fail "interaction wrapper accepted a policy-incompatible projection"
 fi
 interaction_policy_args=$(tr '\0' '\n' < "$TMUX_CALLS")
-echo "$interaction_policy_args" | grep -qF 'new-session' && \
+contains_literal "$interaction_policy_args" new-session && \
  fail "interaction pinned-policy rejection created a tmux session"
-echo "$output" | grep -qF 'operator interaction service requires runtime pi' || \
+contains_literal "$output" 'operator interaction service requires runtime pi' || \
  fail "interaction pinned-policy check did not follow strict parsing"

 # Exact stop derives the socket exclusively from the validated generated
@@ -402,10 +544,10 @@ HOME="$HOME_STOP" PATH="$FAKE_BIN:$PATH" MOSAIC_TEST_TMUX_CALLS="$TMUX_CALLS" \
  MOSAIC_TEST_FLEET_OWNER=123e4567-e89b-12d3-a456-426614174000 \
  MOSAIC_HOME="$HOME_STOP" MOSAIC_TMUX_SOCKET=ambient-socket "$START" --stop coder-stop
 stop_args=$(tr '\0' '\n' < "$TMUX_CALLS")
-echo "$stop_args" | grep -qxF 'mosaic-test' || fail "exact stop did not use the validated generated socket"
-echo "$stop_args" | grep -qxF 'kill-session' || fail "exact stop did not request session termination"
-echo "$stop_args" | grep -qxF '=coder-stop' || fail "exact stop did not exact-match the generated agent name"
-if echo "$stop_args" | grep -qF 'ambient-socket'; then
+contains_line "$stop_args" mosaic-test || fail "exact stop did not use the validated generated socket"
+contains_line "$stop_args" kill-session || fail "exact stop did not request session termination"
+contains_line "$stop_args" '=coder-stop' || fail "exact stop did not exact-match the generated agent name"
+if contains_literal "$stop_args" ambient-socket; then
  fail "exact stop trusted an ambient socket"
 fi

@@ -5,7 +5,10 @@

 detect_platform() {
    local remote_url
-    remote_url=$(git remote get-url origin 2>/dev/null)
+    # `|| true` is load-bearing under `set -e`: outside a git repo this returns 128 and
+    # kills the CALLER before the -z check below can run, so the error message that is
+    # already written here was unreachable. Same idiom as get_gitea_repo_args() below.
+    remote_url=$(git remote get-url origin 2>/dev/null) || true

    if [[ -z "$remote_url" ]]; then
        echo "error: not a git repository or no origin remote" >&2
@@ -39,7 +42,10 @@ detect_platform() {

 get_repo_info() {
    local remote_url
-    remote_url=$(git remote get-url origin 2>/dev/null)
+    # `|| true` is load-bearing under `set -e`: outside a git repo this returns 128 and
+    # kills the CALLER before the -z check below can run, so the error message that is
+    # already written here was unreachable. Same idiom as get_gitea_repo_args() below.
+    remote_url=$(git remote get-url origin 2>/dev/null) || true

    if [[ -z "$remote_url" ]]; then
        echo "error: not a git repository or no origin remote" >&2
@@ -240,6 +246,21 @@ PY
    } >&2
 }

+# Explain tea's most misleading failure. `user does not exist [uid: 0, name: ]` reads
+# as a missing account; it almost always means a REVOKED OR STALE TOKEN. `tea login`
+# keeps its OWN COPY of the token, so rotating the credential store does not update it.
+# Diagnostic only -- stderr, no control flow, no exit.
+explain_tea_user_does_not_exist() {
+    cat >&2 <<'MSG'
+NOTE: `user does not exist [uid: 0, name: ]` from tea usually means a REVOKED OR STALE TOKEN,
+      not a missing account. A `tea login` stores its OWN COPY of the token; rotating the
+      credential store does NOT update it.
+      CHECK: the login's cached copy (`tea login list` -- read the FULL table, never `| head`),
+             then re-register that login against the current token.
+      DO NOT probe capability with a mutating request; a POST is the action, not a check.
+MSG
+}
+
 get_gitea_login_for_host() {
    local host="${1:-}"
    local login
@@ -91,13 +91,32 @@ elif [[ "$PLATFORM" == "gitea" ]]; then
    GITEA_LOGIN_NAME=$(get_gitea_login || true)
    if [[ -n "$GITEA_LOGIN_NAME" ]]; then
        if [[ -n "$COMMENT" ]]; then
-            tea issue comment "$ISSUE_NUMBER" "$COMMENT" --repo "$OWNER/$REPO" --login "$GITEA_LOGIN_NAME"
+            # `tea issue comment` is NOT a subcommand -- tea 0.11.x lists only
+            # list/create/edit/reopen/close under `tea issue`. Comments are the
+            # TOP-LEVEL `tea comment`, which takes the same --repo/--login flags.
+            # The old call therefore always failed, was unchecked, and the script
+            # closed the issue anyway, losing the record of WHY.
+            #
+            # Use `tea comment` rather than the API helper so the comment and the
+            # close are made by the SAME principal ($GITEA_LOGIN_NAME). Routing the
+            # comment through the token-authenticated helper here would attribute the
+            # comment to the token holder and the close to the tea login -- two
+            # principals for one operation.
+            tea comment "$ISSUE_NUMBER" "$COMMENT" --repo "$OWNER/$REPO" --login "$GITEA_LOGIN_NAME" || {
+                echo "Error: failed to post comment on #$ISSUE_NUMBER -- NOT closing (fail closed)." >&2
+                exit 1
+            }
        fi
        tea issue close "$ISSUE_NUMBER" --repo "$OWNER/$REPO" --login "$GITEA_LOGIN_NAME"
    else
        echo "No tea login configured for $(get_remote_host); using authenticated Gitea API fallback." >&2
        if [[ -n "$COMMENT" ]]; then
-            gitea_issue_comment_api
+            # Fail closed here too: an unchecked comment lets the issue close without its
+            # audit trail, which is the same defect as the tea path above.
+            gitea_issue_comment_api || {
+                echo "Error: failed to post comment on #$ISSUE_NUMBER -- NOT closing (fail closed)." >&2
+                exit 1
+            }
        fi
        gitea_issue_close_api
    fi
@@ -156,6 +156,7 @@ case "$PLATFORM" in
                exit 0
            fi
            echo "Warning: tea issue create failed, trying Gitea API fallback..." >&2
+            { declare -F explain_tea_user_does_not_exist >/dev/null && explain_tea_user_does_not_exist; } || true
        fi
        gitea_issue_create_api
        ;;
@@ -71,6 +71,7 @@ elif [[ "$PLATFORM" == "gitea" ]]; then
            exit 0
        fi
        echo "Warning: tea issue view failed, trying Gitea API fallback..." >&2
+        { declare -F explain_tea_user_does_not_exist >/dev/null && explain_tea_user_does_not_exist; } || true
    fi
    gitea_issue_view_api
 else
@@ -84,7 +84,7 @@ cp "$TARGET" "$BAK"
 export MOSAIC_TEST_WORK_DIR="$WORK/.work"

 # --- where the prose lives: usage() { ... EOF ---------------------------------
-PROSE_LO="$(grep -n '^usage() {' "$BAK" | head -1 | cut -d: -f1)"
+PROSE_LO="$(grep -n -m1 '^usage() {' "$BAK" | cut -d: -f1)"
 PROSE_HI="$(awk -v lo="$PROSE_LO" 'NR > lo && /^EOF$/ { print NR; exit }' "$BAK")"
 if [[ -z "$PROSE_LO" || -z "$PROSE_HI" ]]; then
    echo "!! cannot locate the usage() heredoc -- the prose guard would be inert; refusing" >&2
@@ -219,6 +219,7 @@ case "$PLATFORM" in
            exit 0
        fi
        echo "Warning: tea pr create failed, trying Gitea API fallback..." >&2
+        { declare -F explain_tea_user_does_not_exist >/dev/null && explain_tea_user_does_not_exist; } || true
        gitea_pr_create_api
        ;;
    *)
@@ -0,0 +1,58 @@
+#!/bin/bash
+# Regression: detect_platform / get_repo_info must FAIL LOUDLY outside a git repo,
+# not kill the caller silently.
+#
+# Both functions already contained the right error path:
+#     if [[ -z "$remote_url" ]]; then echo "error: not a git repository..." >&2; return 1; fi
+# but under `set -e` -- which every wrapper in this directory uses -- the preceding
+# assignment `remote_url=$(git remote get-url origin 2>/dev/null)` returns git's 128
+# outside a repo and terminates the CALLER first. The message was unreachable.
+#
+# Observed cost: pr-review.sh invoked from a non-repo cwd exits 128 with NO stdout and
+# NO stderr, even when -r/--repo and -H/--host are supplied -- the flags documented as
+# "skips git-remote inference". Two reviewer seats hit this and correctly reported
+# `blocked` with no diagnostic to report.
+#
+# The control that matters is the LOUD one: asserting "rc != 0" passes on the broken
+# build too, because 128 is also non-zero. The test must assert the MESSAGE.
+set -uo pipefail
+fail=0
+HERE="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+TMP="$(mktemp -d)"; trap 'rm -rf "$TMP"' EXIT
+
+run_outside() { # $1=function name -> "rc:sawmessage"
+    local fn="$1" out rc
+    out=$( cd "$TMP" && bash -c "set -e; source '$HERE/detect-platform.sh'; $fn" 2>&1 ); rc=$?
+    printf '%s:%s' "$rc" "$(grep -qi 'not a git repository' <<<"$out" && echo yes || echo no)"
+}
+check() { if [ "$2" = "$3" ]; then echo "  PASS  $1 ($2)"; else echo "  FAIL  $1: got $2, want $3"; fail=1; fi; }
+
+# $TMP must not be inside a git repo. Do not SKIP on failure: be-coder-07 showed the
+# original SKIP exited 0, so pointing TMPDIR beneath a git worktree made this test PASS
+# against unchanged main. A skip that exits 0 is indistinguishable from a pass.
+# GIT_CEILING_DIRECTORIES stops git walking above $TMP, making the condition hold
+# regardless of where TMPDIR lives, rather than merely detecting when it does not.
+# GIT_CEILING_DIRECTORIES is matched against the PHYSICAL path -- a symlinked TMPDIR
+# (/tmp is commonly one) makes the logical path never match, and the ceiling silently
+# does nothing. Resolve it before exporting.
+TMP="$(cd "$TMP" && pwd -P)"
+export GIT_CEILING_DIRECTORIES="$TMP"
+if ( cd "$TMP" && git rev-parse --git-dir >/dev/null 2>&1 ); then
+    echo "  FAIL  scratch dir is inside a git repo even with GIT_CEILING_DIRECTORIES set;"
+    echo "        the outside-a-repo precondition cannot be established -- refusing to report a result"
+    exit 1
+fi
+
+echo "== outside a git repo: rc=1 AND the diagnostic is emitted =="
+check "detect_platform" "$(run_outside detect_platform)" "1:yes"
+check "get_repo_info"   "$(run_outside get_repo_info)"   "1:yes"
+
+echo "== inside a git repo the functions still work =="
+git init -q "$TMP/repo" 2>/dev/null
+git -C "$TMP/repo" remote add origin https://git.mosaicstack.dev/mosaicstack/stack.git 2>/dev/null
+out=$( cd "$TMP/repo" && bash -c "set -e; source '$HERE/detect-platform.sh'; detect_platform" 2>&1 ); rc=$?
+if [ "$rc" -eq 0 ] && grep -qi 'gitea' <<<"$out"; then echo "  PASS  detect_platform in-repo (rc=0, $out)"
+else echo "  FAIL  detect_platform in-repo: rc=$rc out=$out"; fail=1; fi
+
+[ "$fail" -eq 0 ] && echo "OK  detect-platform fails loudly outside a repo" || echo "FAILED"
+exit "$fail"
@@ -0,0 +1,64 @@
+#!/bin/bash
+# Regression: the tea-failure diagnostic must be STATUS-NEUTRAL.
+#
+# Found by be-coder-08 reviewing PR #1086. At all three call sites the diagnostic is emitted
+# immediately BEFORE the Gitea API fallback. Written as the last command of an && list:
+#     declare -F explain_... >/dev/null && explain_...
+# under `set -e` a FAILING diagnostic exits and the fallback never runs -- a diagnostic that
+# suppresses the recovery path it exists to explain. It misbehaves ONLY when the helper is
+# PRESENT, so the helper-absent path (pre-#1086 behaviour) keeps working and reads as a
+# passing control.
+#
+# TWO DEFECTS IN THE FIRST VERSION OF THIS TEST, both found by be-coder-08:
+#   1. `out=$( ... ) 2>"$errto"` applies the redirection to the ASSIGNMENT, not to the
+#      command substitution, so the probe's stderr was never actually pointed at /dev/full
+#      and the /dev/full rows proved nothing. Verified: `out=$(echo x >&2) 2>/dev/full`
+#      leaks to the terminal and returns 0; the redirect must be INSIDE the substitution.
+#   2. `eval "$CONSTRUCT"` changes `set -e` semantics for a bare && list, so the probe did
+#      not exercise the construct as the shipped file executes it. It now writes the line
+#      into a real script and runs it -- same parse, same set -e rules, no eval.
+# The construct is still LIFTED FROM THE SHIPPED FILE: retyping the fixed form makes the
+# probe pass on a build whose real call sites still carry the bare && form.
+set -uo pipefail
+fail=0
+GIT_DIR_UNDER_TEST="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+TMP="$(mktemp -d)"; trap 'rm -rf "$TMP"' EXIT
+
+probe() { # $1=present|absent  $2=stderr target  $3=source file  -> "rc:fallback"
+    local helper="$1" errto="$2" src="$3" construct script out rc
+    construct=$(grep -m1 'explain_tea_user_does_not_exist' "$GIT_DIR_UNDER_TEST/$src" | sed 's/^[[:space:]]*//')
+    [ -n "$construct" ] || { printf 'no-construct:no'; return; }
+    script="$TMP/probe.sh"
+    {
+        echo '#!/bin/bash'
+        echo 'set -e'
+        echo 'explain_tea_user_does_not_exist() { echo "diagnostic" >&2; }'
+        [ "$helper" = absent ] && echo 'unset -f explain_tea_user_does_not_exist'
+        echo "$construct"                # the shipped line, parsed by a real shell
+        echo 'echo FALLBACK_REACHED'
+    } > "$script"
+    # redirect INSIDE the substitution so the subshell's stderr really is $errto
+    out=$( bash "$script" 2>"$errto" ); rc=$?
+    printf '%s:%s' "$rc" "$(grep -q FALLBACK_REACHED <<<"$out" && echo yes || echo no)"
+}
+
+check() { if [ "$2" = "$3" ]; then echo "  PASS  $1 ($2)"; else echo "  FAIL  $1: got $2, want $3"; fail=1; fi; }
+
+echo "== diagnostic must not alter exit status or skip the fallback =="
+# /dev/full makes every stderr write fail -- the real-world shape is a closed or full fd.
+for src in pr-create.sh issue-view.sh issue-create.sh; do
+    check "$src stderr OK      / helper present" "$(probe present /dev/null "$src")" "0:yes"
+    check "$src stderr OK      / helper absent " "$(probe absent  /dev/null "$src")" "0:yes"
+    check "$src stderr FAILING / helper present" "$(probe present /dev/full "$src")" "0:yes"
+    check "$src stderr FAILING / helper absent " "$(probe absent  /dev/full "$src")" "0:yes"
+done
+
+echo "== all three call sites use the status-neutral form =="
+for f in pr-create.sh issue-view.sh issue-create.sh; do
+    p="$GIT_DIR_UNDER_TEST/$f"
+    grep -q '{ declare -F explain_tea_user_does_not_exist >/dev/null && explain_tea_user_does_not_exist; } || true' "$p" \
+        && echo "  PASS  $f guarded" || { echo "  FAIL  $f: diagnostic is not status-neutral"; fail=1; }
+done
+
+[ "$fail" -eq 0 ] && echo "OK  diagnostic is status-neutral" || echo "FAILED"
+exit "$fail"
@@ -0,0 +1,150 @@
+#!/usr/bin/env bash
+# Regression: issue-close.sh must NOT close an issue when the closing comment could not
+# be posted, and comment+close must be made by ONE principal.
+#
+# Guards two defects fixed together (see #1081):
+#   1. `tea issue comment` is not a subcommand -- tea exposes comments as the TOP-LEVEL
+#      `tea comment`. The old call always failed, was unchecked, and the issue closed
+#      anyway, losing the record of WHY it was closed.
+#   2. Routing the comment through the token-authenticated API helper while the close
+#      used --login would attribute one operation to two principals.
+#
+# SAFETY (rev-974, #1085 review 130): this test previously ran under `set -uo pipefail`
+# with unchecked mkdir/redirect/cd, then prepended a possibly-nonexistent $MOCK_BIN to
+# PATH -- while `git remote add origin` names the REAL repository. Forcing setup failure
+# with an unwritable AGENT_WORK_ROOT made it `git init` in its CALLER's directory and
+# invoke the real, provider-mutating issue-close.sh. Setup now fails closed, and both
+# `tea` and `curl` are asserted to resolve INSIDE $MOCK_BIN before any target run.
+set -euo pipefail
+# NOTE: with `set -e`, `grep -q X && fail "..."` is a trap -- the ABSENT case (grep rc=1,
+# which is the PASSING case for a must-not-appear assertion) is the last command of an &&
+# list and silently terminates the script with no message. Every must-not-appear check
+# below is therefore an if-block. This is the same set -e + &&-list defect be-coder-08
+# found in #1086, reintroduced here by adding `set -e` for the sandbox-safety fix.
+
+WORK_ROOT="${AGENT_WORK_ROOT:-${TMPDIR:-/tmp}}"
+SANDBOX="$WORK_ROOT/issue-close-fail-closed-test-$$"
+MOCK_BIN="$SANDBOX/bin"; REPO_DIR="$SANDBOX/repo"; CALLS="$SANDBOX/calls.log"
+cleanup() { rm -rf "$SANDBOX"; }
+trap cleanup EXIT
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+TARGET="$SCRIPT_DIR/issue-close.sh"
+[ -f "$TARGET" ] || { echo "FAIL: issue-close.sh not found beside this test"; exit 1; }
+fail() { echo "FAIL: $*"; exit 1; }
+
+# Every setup step is checked. Under `set -e` these abort; the explicit || fail keeps the
+# reason legible instead of a bare non-zero exit.
+mkdir -p "$MOCK_BIN" "$REPO_DIR" || fail "setup: cannot create sandbox under $WORK_ROOT"
+: > "$CALLS"                     || fail "setup: cannot write calls log at $CALLS"
+cd "$REPO_DIR"                   || fail "setup: cannot cd into $REPO_DIR"
+git init -q                      || fail "setup: git init failed"
+git remote add origin https://git.mosaicstack.dev/mosaicstack/stack.git || fail "setup: git remote add failed"
+export PATH="$MOCK_BIN:$PATH" CALLS
+export GITEA_URL="https://git.mosaicstack.dev"
+export GITEA_TOKEN="redacted-test-token"
+
+cat > "$MOCK_BIN/curl" <<'EOF'
+#!/bin/bash
+method=GET; url=""
+while [ $# -gt 0 ]; do
+    case "$1" in
+        -X) method="$2"; shift 2 ;;
+        http*|https*) url="$1"; shift ;;
+        *) shift ;;
+    esac
+done
+printf 'curl %s %s\n' "$method" "$url" >> "$CALLS"
+[ "${MOCK_CURL_FAIL:-}" = "1" ] && [ "$method" = "POST" ] && exit 22
+exit 0
+EOF
+chmod +x "$MOCK_BIN/curl"
+
+mk_tea() {  # $1 = exit code for a comment attempt; $2 = login list (empty => no login)
+    local rc="$1" login="${2-}"
+    cat > "$MOCK_BIN/tea" <<EOF
+#!/bin/bash
+printf 'tea %s\n' "\$*" >> "$CALLS"
+if [[ "\$*" == *"login list"* ]]; then
+    printf '%s\n' '${login}'; exit 0
+fi
+# Fail ANY comment attempt -- both the correct top-level \`tea comment\` and the broken
+# \`tea issue comment\` -- so an unfixed script exercises the DEFECT rather than tripping
+# a setup assertion.
+if [[ "\$1" == "comment" || ( "\$1" == "issue" && "\$2" == "comment" ) ]]; then exit $rc; fi
+exit 0
+EOF
+    chmod +x "$MOCK_BIN/tea"
+}
+LOGIN_JSON='[{"name":"git.mosaicstack.dev","url":"https://git.mosaicstack.dev"}]'
+
+# The mocks must be the ones that run. Without this, a failed setup silently falls through
+# to the real tea/curl and the "test" mutates the real provider.
+assert_mocked() {
+    local w
+    for w in tea curl; do
+        p=$(command -v "$w" || true)
+        [ -n "$p" ] || fail "SAFETY: $w does not resolve at all"
+        case "$p" in
+            "$MOCK_BIN"/*) : ;;
+            *) fail "SAFETY: $w resolves to $p, OUTSIDE the sandbox -- refusing to invoke the target" ;;
+        esac
+    done
+}
+
+run_target() {  # never let a target failure abort the test; we assert on rc
+    # Call sites MUST use `rc=0; run_target ... || rc=$?` -- a bare `run_target ...; rc=$?`
+    # lets the non-zero RETURN trip set -e in the CALLER before rc is ever read.
+    set +e; bash "$TARGET" "$@" >/dev/null 2>&1; local rc=$?; set -e; return $rc
+}
+
+# ── tea path ────────────────────────────────────────────────────────────────────────
+# 1. NEGATIVE (the regression): comment fails => must NOT close, must exit non-zero
+mk_tea 1 "$LOGIN_JSON"; : > "$CALLS"; assert_mocked
+rc=0; run_target -i 42 -c "closing note" || rc=$?
+grep -qE 'tea (issue )?comment' "$CALLS" || fail "no comment attempt -- setup did not reach the tea branch"
+if grep -q 'tea issue close' "$CALLS"; then fail "ISSUE CLOSED AFTER THE COMMENT FAILED -- the regression"; fi
+[ "$rc" -ne 0 ] || fail "comment failed but issue-close exited 0 -- FAIL-OPEN"
+
+# 2. POSITIVE: comment succeeds => close proceeds, exit 0
+mk_tea 0 "$LOGIN_JSON"; : > "$CALLS"; assert_mocked
+rc=0; run_target -i 42 -c "closing note" || rc=$?
+[ "$rc" -eq 0 ] || fail "comment succeeded but issue-close exited $rc"
+grep -q 'tea issue close' "$CALLS" || fail "issue not closed even though the comment succeeded"
+
+# 3. must use top-level `tea comment`, never `tea issue comment`
+if grep -q 'tea issue comment' "$CALLS"; then fail "used 'tea issue comment' -- not a valid subcommand"; fi
+
+# 4. ONE PRINCIPAL: comment and close must carry the SAME --login
+c=$(grep -m1 '^tea comment'     "$CALLS" | grep -o -- '--login [^ ]*' | awk '{print $2}')
+k=$(grep -m1 '^tea issue close' "$CALLS" | grep -o -- '--login [^ ]*' | awk '{print $2}')
+[ -n "$c" ] || fail "comment carried no --login"
+[ "$c" = "$k" ] || fail "MIXED PRINCIPALS: comment=$c close=$k"
+
+# ── no-login / API fallback path ────────────────────────────────────────────────────
+# rev-974: the delta also adds fail-closed behaviour to this branch, and the suite never
+# reached it -- replacing the whole fallback contract with an unconditional close still
+# passed. These assert the POSTCONDITION (which HTTP calls happened, in what order),
+# not merely that a command ran.
+# 5. no login + comment FAILS => POST attempted, NO PATCH, non-zero
+mk_tea 0 ""; : > "$CALLS"; assert_mocked
+rc=0; MOCK_CURL_FAIL=1 run_target -i 42 -c "closing note" || rc=$?
+grep -q 'curl POST' "$CALLS" || fail "API path: no comment POST attempted"
+if grep -q 'curl PATCH' "$CALLS"; then fail "API path: ISSUE CLOSED (PATCH) AFTER THE COMMENT POST FAILED"; fi
+[ "$rc" -ne 0 ] || fail "API path: comment failed but exited 0 -- FAIL-OPEN"
+
+# 6. no login + comment SUCCEEDS => POST strictly BEFORE PATCH, exit 0
+mk_tea 0 ""; : > "$CALLS"; assert_mocked
+rc=0; run_target -i 42 -c "closing note" || rc=$?
+[ "$rc" -eq 0 ] || fail "API path: comment succeeded but exited $rc"
+order=$(grep -oE 'curl (POST|PATCH)' "$CALLS" | awk '{print $2}' | paste -sd, -)
+[ "$order" = "POST,PATCH" ] || fail "API path: expected POST,PATCH -- got '${order:-<none>}'"
+
+# 7. no login + NO comment => PATCH only, never a POST
+mk_tea 0 ""; : > "$CALLS"; assert_mocked
+rc=0; run_target -i 42 || rc=$?
+[ "$rc" -eq 0 ] || fail "API path: no-comment close exited $rc"
+if grep -q 'curl POST' "$CALLS"; then fail "API path: posted a comment when none was requested"; fi
+grep -q 'curl PATCH' "$CALLS" || fail "API path: issue not closed when no comment was requested"
+
+echo "issue-close.sh fail-closed + single-principal regression passed"
@@ -8,9 +8,7 @@ import json
 import os
 import socket
 import sys
-import time
 from collections.abc import Callable, Mapping, Sequence
-from datetime import datetime, timezone
 from pathlib import Path
 from typing import Final

@@ -55,48 +53,6 @@ def broker_request(socket_path: Path, request: dict[str, object]) -> dict[str, o
    return value


-def _self_starttime() -> str | None:
-    """Field 22 of our own /proc stat — the anchor starttime the broker records.
-
-    Read past the comm field's parens, since a process name may contain them.
-    """
-    try:
-        raw = Path(f"/proc/{os.getpid()}/stat").read_text()
-        return raw.rsplit(")", 1)[1].split()[19]
-    except (OSError, IndexError, ValueError):
-        return None
-
-
-def _append_launch_record(environ: Mapping[str, str], record: dict[str, object]) -> None:
-    """Append one NDJSON event to the #797 Runtime Session Ledger.
-
-    `fleet/run/sessions/` is operator-classified in framework-manifest.txt and is
-    already covered by test-upgrade-manifest-guard.sh, so an upgrade can neither
-    overwrite nor prune it. Files 0600 under a 0700 dir, matching what that guard
-    asserts.
-
-    Never raises: a launch must not be denied over bookkeeping. But it also never
-    fails silently — a missing record is exactly the kind of gap that made the
-    2026-08-06 MUTATOR_UNVERIFIED investigation cost a day.
-    """
-    try:
-        mosaic_home = environ.get("MOSAIC_HOME") or str(Path.home() / ".config" / "mosaic")
-        directory = Path(mosaic_home) / "fleet" / "run" / "sessions"
-        directory.mkdir(parents=True, exist_ok=True)
-        os.chmod(directory, 0o700)
-        framed = {
-            "seq": time.time_ns() // 1_000_000,
-            "ts": datetime.now(timezone.utc).isoformat(),
-            **record,
-        }
-        path = directory / "events.ndjson"
-        descriptor = os.open(path, os.O_WRONLY | os.O_CREAT | os.O_APPEND, 0o600)
-        with os.fdopen(descriptor, "w") as handle:
-            handle.write(json.dumps(framed, separators=(",", ":")) + "\n")
-    except (OSError, ValueError, TypeError) as error:
-        print(f"[mosaic] WARNING: launch record not written: {error}", file=sys.stderr)
-
-
 def main(
    argv: Sequence[str] | None = None,
    *,
@@ -138,9 +94,8 @@ def main(
    # silent pass and never folded into the generic registration-failure
    # branch.
    try:
-        activation_capability = probe_activation_capability(source_environment)
        assert_activation_capability_matches(
-            activation_capability,
+            probe_activation_capability(source_environment),
            expected_activation_capability,
        )
    except VersionCouplingError as version_error:
@@ -173,32 +128,6 @@ def main(
        print("Mosaic lease broker registration failed; runtime launch denied.", file=sys.stderr)
        return 1

-    # Immutable launch record, half two. `mosaic` wrote `session.launch` with the
-    # config/provenance it knows; only this process knows the broker session id
-    # and the activation capability it just asserted. os.execvpe preserves the
-    # PID, so this PID is BOTH the anchor pid and the join key back to that
-    # record. Never fatal — bookkeeping must not deny a launch — but never
-    # silent either.
-    _append_launch_record(
-        source_environment,
-        {
-            "kind": "lease.register",
-            # Joins back to `mosaic`'s session.launch record. NOT pid: execRuntime()
-            # spawns rather than execs, so this process is a CHILD of mosaic with a
-            # different pid. This pid IS the broker anchor pid (os.execvpe below
-            # preserves it), which is a separate and still-useful fact.
-            "launch_id": source_environment.get("MOSAIC_LAUNCH_ID"),
-            "pid": os.getpid(),
-            "runtime": arguments.runtime,
-            "session_id": session_id,
-            "runtime_generation": generation,
-            "generation_file": str(generation_file),
-            "anchor_starttime": _self_starttime(),
-            "activation_capability": activation_capability,
-            "command": Path(command[0]).name,
-        },
-    )
-
    environment = dict(source_environment)
    environment["MOSAIC_LEASE_SESSION_ID"] = session_id
    environment["MOSAIC_RUNTIME_GENERATION"] = str(generation)
@@ -1,269 +0,0 @@
-#!/usr/bin/env python3
-"""Lease promotion client — the half the enforcement toolkit never shipped.
-
-The enforcement half (``daemon.py`` + ``mutator-gate.py``) ships and denies. The
-promotion half has no production caller anywhere in the package: as of 0.0.48,
-0.0.49 and 0.0.50-next.2207, ``begin_verification`` / ``observe_receipt`` /
-``promote_lease`` are invoked only by ``broker-test-client.ts``, the acceptance
-spec, unit tests, and two probes under ``docs/``. Consequence: **no lease on any
-host can reach VERIFIED**, so every mutator is denied ``MUTATOR_UNVERIFIED`` by a
-gate nothing can satisfy.
-
-THE PROTOCOL (``daemon.py:578-754``)
------------------------------------
-  1. ``begin_verification`` — broker revokes, mints a challenge, and returns the
-     exact ``receipt`` text the MODEL must emit
-  2. *the model emits that text verbatim as its ENTIRE latest message*
-  3. the runtime adapter ships that message to the daemon-owned observer socket
-  4. ``observe_receipt``  -> ``PENDING_PROMOTION``
-  5. ``promote_lease``    -> ``VERIFIED``
-
-THIS MODULE IMPLEMENTS 1, 4 AND 5 — NEVER 2
-------------------------------------------
-Step 2 is the security property, not a formality. ``is_verbatim_receipt`` uses
-``hmac.compare_digest`` against the exact minted string — explicitly "not a
-transcript substring" (``receipt_challenge.py``). Promotion therefore requires a
-live model that received the challenge in its context and echoed it exactly.
-
-``receipt-observer-client.py`` will post ANY string as the latest assistant
-message. A promotion client that posted its own receipt would satisfy the broker
-while proving nothing — a gate-disabler indistinguishable from a working fix
-unless someone looks for it. **This module never posts a receipt.** Emitting it
-belongs to the runtime adapter, where a real model turn happens.
-
-The construction binds the exact normative source bytes, so a VERIFIED lease
-means "this agent is running THIS law", not merely "this session id is known".
-``h_source`` / ``h_payload`` are derived by the framework's own
-``normative_fragments.build_payload`` rather than reimplemented: the broker
-derives them the same way and any divergence yields ``PAYLOAD_BINDING_MISMATCH``.
-There must be exactly one implementation.
-
-Usage
-----
-    lease_promote.py --begin                 # prints the receipt the MODEL must emit
-    lease_promote.py --complete <challenge>  # after the adapter observed it
-"""
-
-from __future__ import annotations
-
-import argparse
-import base64
-import json
-import os
-import socket
-import sys
-from pathlib import Path
-from typing import Final
-
-# Isolated (`python -I`) adapter invocations must still import co-located
-# framework modules; never depend on the caller's PYTHONPATH.
-_MODULE_DIRECTORY = str(Path(__file__).resolve().parent)
-if _MODULE_DIRECTORY not in sys.path:
-    sys.path.insert(0, _MODULE_DIRECTORY)
-
-from normative_fragments import NormativeFragment, build_payload  # noqa: E402
-
-MAX_FRAME: Final = 64 * 1024
-BROKER_TIMEOUT_SECONDS: Final = 3.0
-SCHEMA_VERSION: Final = 1
-MANIFEST_VERSION: Final = 1
-GENERATOR_VERSION: Final = "mosaic/lease_promote@1"
-DEFAULT_TTL_SECONDS: Final = 300
-
-# Normative sources whose exact bytes bind the lease. Sources absent on a given
-# deployment are simply not part of the binding — never fabricated.
-FRAGMENT_SOURCES: Final = (
-    "CONSTITUTION.md",
-    "AGENTS.md",
-    "SOUL.md",
-    "USER.md",
-    "STANDARDS.md",
-    "TOOLS.md",
-)
-
-
-def mosaic_home() -> Path:
-    return Path(os.environ.get("MOSAIC_HOME") or Path.home() / ".config" / "mosaic")
-
-
-def broker_socket() -> Path:
-    value = os.environ.get("MOSAIC_LEASE_BROKER_SOCKET")
-    if value:
-        return Path(value)
-    runtime_dir = os.environ.get("XDG_RUNTIME_DIR")
-    if runtime_dir:
-        return Path(runtime_dir) / "mosaic-lease" / "broker.sock"
-    return Path(f"/run/user/{os.getuid()}/mosaic-lease/broker.sock")
-
-
-def session_identity() -> tuple[str, int, str]:
-    """Session id, CURRENT generation, runtime.
-
-    The generation file wins over the env var, matching ``lease_generation.py``.
-    Sending a generation HIGHER than the broker's would revoke this session's own
-    authority (``daemon.py:342-344``), so this never guesses.
-    """
-    session_id = os.environ["MOSAIC_LEASE_SESSION_ID"]
-    runtime = os.environ["MOSAIC_LEASE_RUNTIME"]
-    state_file = os.environ.get("MOSAIC_LEASE_GENERATION_FILE")
-    if state_file:
-        try:
-            return session_id, int(Path(state_file).read_text().strip()), runtime
-        except (OSError, ValueError):
-            pass
-    return session_id, int(os.environ["MOSAIC_RUNTIME_GENERATION"]), runtime
-
-
-def build_construction(runtime: str) -> tuple[dict[str, object], object]:
-    """Assemble the wire construction and derive its hashes with the sole builder."""
-    sources = list(FRAGMENT_SOURCES) + [f"runtime/{runtime}/RUNTIME.md"]
-    wire_fragments: list[dict[str, str]] = []
-    objects: list[NormativeFragment] = []
-
-    for source_id in sources:
-        try:
-            content = (mosaic_home() / source_id).read_bytes()
-        except OSError:
-            continue
-        import hashlib
-
-        digest = hashlib.sha256(content).hexdigest()
-        wire_fragments.append(
-            {
-                "source_id": source_id,
-                "content_base64": base64.b64encode(content).decode("ascii"),
-                "expected_sha256": digest,
-            }
-        )
-        objects.append(NormativeFragment(source_id, content, digest))
-
-    if not wire_fragments:
-        raise RuntimeError("no normative sources found — refusing to build an empty binding")
-
-    result = build_payload(
-        manifest_version=MANIFEST_VERSION,
-        generator_version=GENERATOR_VERSION,
-        fragments=objects,
-    )
-    if result.injectionDecision != "ACCEPTED" or not result.promotion:
-        raise RuntimeError(f"construction refused locally: {result.source_reason}")
-
-    return (
-        {
-            "manifest_version": MANIFEST_VERSION,
-            "generator_version": GENERATOR_VERSION,
-            "fragments": wire_fragments,
-        },
-        result,
-    )
-
-
-def broker_request(payload: dict[str, object]) -> dict[str, object]:
-    raw = (json.dumps(payload, separators=(",", ":")) + "\n").encode()
-    if len(raw) > MAX_FRAME:
-        raise ValueError(
-            f"request too large ({len(raw)} bytes); broker frame cap is {MAX_FRAME}"
-        )
-    response = bytearray()
-    with socket.socket(socket.AF_UNIX, socket.SOCK_STREAM) as connection:
-        connection.settimeout(BROKER_TIMEOUT_SECONDS)
-        connection.connect(str(broker_socket()))
-        connection.sendall(raw)
-        connection.shutdown(socket.SHUT_WR)
-        while len(response) <= MAX_FRAME:
-            chunk = connection.recv(4096)
-            if not chunk:
-                break
-            response.extend(chunk)
-    if len(response) > MAX_FRAME or not response.endswith(b"\n"):
-        raise ValueError("invalid broker reply")
-    value = json.loads(response)
-    if not isinstance(value, dict):
-        raise ValueError("invalid broker reply")
-    return value
-
-
-def begin(
-    ttl_seconds: int = DEFAULT_TTL_SECONDS,
-    compaction_epoch: int = 0,
-    request_epoch: int = 0,
-) -> dict[str, object]:
-    """Step 1. Returns the broker reply, including the exact ``receipt`` text."""
-    session_id, generation, runtime = session_identity()
-    construction, derived = build_construction(runtime)
-    return broker_request(
-        {
-            "action": "begin_verification",
-            "session_id": session_id,
-            "runtime_generation": generation,
-            "runtime": runtime,
-            "ttl_seconds": ttl_seconds,
-            "binding": {
-                "compaction_epoch": compaction_epoch,
-                "request_epoch": request_epoch,
-                "h_source": derived.h_source,
-                "h_payload": derived.h_payload,
-                "schema_version": SCHEMA_VERSION,
-            },
-            "construction": construction,
-        }
-    )
-
-
-def complete(challenge: str) -> dict[str, object]:
-    """Steps 4-5. Assumes the model already emitted the receipt and the adapter
-    shipped it to the observer socket."""
-    session_id, generation, _ = session_identity()
-    observed = broker_request(
-        {
-            "action": "observe_receipt",
-            "session_id": session_id,
-            "runtime_generation": generation,
-            "receipt_challenge": challenge,
-        }
-    )
-    if observed.get("ok") is not True or observed.get("state") != "PENDING_PROMOTION":
-        return {"stage": "observe_receipt", **observed}
-    promoted = broker_request(
-        {
-            "action": "promote_lease",
-            "session_id": session_id,
-            "runtime_generation": generation,
-            "receipt_challenge": challenge,
-        }
-    )
-    return {"stage": "promote_lease", **promoted}
-
-
-def main(argv: list[str] | None = None) -> int:
-    parser = argparse.ArgumentParser(description="Mosaic lease promotion client.")
-    group = parser.add_mutually_exclusive_group(required=True)
-    group.add_argument(
-        "--begin",
-        action="store_true",
-        help="mint a challenge; prints the receipt the MODEL must emit verbatim",
-    )
-    group.add_argument(
-        "--complete",
-        metavar="CHALLENGE",
-        help="observe the emitted receipt and promote the lease",
-    )
-    parser.add_argument("--ttl-seconds", type=int, default=DEFAULT_TTL_SECONDS)
-    arguments = parser.parse_args(argv)
-
-    try:
-        if arguments.begin:
-            print(json.dumps(begin(ttl_seconds=arguments.ttl_seconds), indent=2))
-        else:
-            print(json.dumps(complete(arguments.complete), indent=2))
-    except KeyError as exc:
-        print(f"missing lease environment: {exc}; not a lease-gated session", file=sys.stderr)
-        return 2
-    except (OSError, ValueError, RuntimeError, json.JSONDecodeError) as exc:
-        print(f"{type(exc).__name__}: {exc}", file=sys.stderr)
-        return 2
-    return 0
-
-
-if __name__ == "__main__":
-    raise SystemExit(main())
@@ -91,10 +91,12 @@ fi

 if [[ -n "$dirty_files" ]]; then
  echo "  Modified files:"
-  echo "$dirty_files" | head -20 | while IFS= read -r line; do
-    echo "    $line"
+  mapfile -t dirty_lines <<<"$dirty_files"
+  file_count="${#dirty_lines[@]}"
+  display_count=$((file_count < 20 ? file_count : 20))
+  for ((i = 0; i < display_count; i++)); do
+    echo "    ${dirty_lines[$i]}"
  done
-  file_count="$(echo "$dirty_files" | wc -l)"
  if (( file_count > 20 )); then
    echo "    ... and $(( file_count - 20 )) more"
  fi
@@ -66,7 +66,7 @@ present=0

 for entry in "${PRDY_REQUIRED_SECTIONS[@]}"; do
  pattern="${entry#*|}"
-  if echo "$PRD_CONTENT" | grep -qiE "$pattern"; then
+  if grep -qiE "$pattern" <<<"$PRD_CONTENT"; then
    present=$((present + 1))
  fi
 done
@@ -169,13 +169,13 @@ main() {
 # classify_surface PATH → surface name (highest-risk match wins, mirrors TS)
 classify_surface() {
  local p="$1"
-  if printf '%s' "$p" | grep -qiE 'auth|login|session|token|permission|rbac|credential|secret'; then echo auth; return; fi
-  if printf '%s' "$p" | grep -qiE 'migration|prisma|schema|\.sql|entity|repository|seed'; then echo data; return; fi
-  if printf '%s' "$p" | grep -qiE 'docker|\.woodpecker|compose|traefik|deploy|helm|k8s|terraform'; then echo infra; return; fi
-  if printf '%s' "$p" | grep -qiE 'package\.json|tsconfig|turbo\.json|pnpm-|\.config\.|eslint|vite'; then echo build; return; fi
-  if printf '%s' "$p" | grep -qE '\.tsx|\.css|components/|apps/web/'; then echo ui; return; fi
-  if printf '%s' "$p" | grep -qE '\.spec\.|\.test\.|__tests__/'; then echo test; return; fi
-  if printf '%s' "$p" | grep -qE '\.md$|docs/'; then echo docs; return; fi
+  if grep -qiE 'auth|login|session|token|permission|rbac|credential|secret' <<<"$p"; then echo auth; return; fi
+  if grep -qiE 'migration|prisma|schema|\.sql|entity|repository|seed' <<<"$p"; then echo data; return; fi
+  if grep -qiE 'docker|\.woodpecker|compose|traefik|deploy|helm|k8s|terraform' <<<"$p"; then echo infra; return; fi
+  if grep -qiE 'package\.json|tsconfig|turbo\.json|pnpm-|\.config\.|eslint|vite' <<<"$p"; then echo build; return; fi
+  if grep -qE '\.tsx|\.css|components/|apps/web/' <<<"$p"; then echo ui; return; fi
+  if grep -qE '\.spec\.|\.test\.|__tests__/' <<<"$p"; then echo test; return; fi
+  if grep -qE '\.md$|docs/' <<<"$p"; then echo docs; return; fi
  echo none
 }

@@ -13,7 +13,12 @@ JSON_INPUT=$(cat)
 if command -v jq &>/dev/null; then
  FILE_PATH=$(echo "$JSON_INPUT" | jq -r '.tool_input.file_path // .tool_response.filePath // .file_path // empty' 2>/dev/null || echo "")
 else
-  FILE_PATH=$(echo "$JSON_INPUT" | grep -o '"file_path"[[:space:]]*:[[:space:]]*"[^"]*"' | sed 's/.*"\([^"]*\)"$/\1/' | head -1)
+  file_path_pattern='"file_path"[[:space:]]*:[[:space:]]*"([^"]*)"'
+  if [[ "$JSON_INPUT" =~ $file_path_pattern ]]; then
+    FILE_PATH="${BASH_REMATCH[1]}"
+  else
+    FILE_PATH=""
+  fi
 fi

 # Only check TypeScript files
@@ -53,7 +58,7 @@ OUTPUT=$(npx tsc --noEmit --pretty --maxNodeModuleJsDepth 0 2>&1) || STATUS=$?
 if [ "${STATUS:-0}" -ne 0 ]; then
  # Filter output to only show errors related to the edited file (if possible)
  BASENAME=$(basename "$FILE_PATH")
-  RELEVANT=$(echo "$OUTPUT" | grep -A2 "$BASENAME" 2>/dev/null || echo "$OUTPUT" | head -20)
+  RELEVANT=$(grep -A2 "$BASENAME" <<<"$OUTPUT" 2>/dev/null || sed -n '1,20p' <<<"$OUTPUT")

  echo "TypeScript type errors detected after editing $FILE_PATH:"
  echo "$RELEVANT"
@@ -32,7 +32,6 @@ packages/mosaic/framework/tools/tmux/test-send-message-socket.sh | requires a re
 packages/mosaic/framework/tools/tmux/test-send-message-verdict.sh | requires real tmux-pane fixtures on a throwaway socket; CI image ships no tmux; #1017 burndown (same condition as its sibling)

 # --- single-suite directories: unmeasured in CI ---
-packages/mosaic/framework/tools/fleet/test-start-agent-session.sh | unmeasured in CI image; stubs tmux via a fake bin dir, likely CI-fit; #1017 burndown
 packages/mosaic/framework/tools/glpi/test-list-http-status.sh | unmeasured in CI image; stub-based (#807 regression harness), likely CI-fit; #1017 burndown
 packages/mosaic/framework/tools/orchestrator/test-board-roll.sh | unmeasured in CI image; file-fixture based, likely CI-fit; #1017 burndown
 packages/mosaic/framework/tools/woodpecker/test-ci-wait-exit-matrix.sh | unmeasured in CI image; drives ci-wait.sh against a stub pipeline-status.sh, likely CI-fit; #1017 burndown
@@ -110,7 +110,7 @@ for attempt in $(seq 1 $((RETRIES + 1))); do
  sleep 1.2
  pane=$("${tmux_cmd[@]}" capture-pane -t "$EFFECTIVE_TARGET" -p 2>/dev/null)

-  if printf '%s' "$pane" | grep -qF "$QUEUED_RE"; then
+  if grep -qF "$QUEUED_RE" <<<"$pane"; then
    status="queued"; break
  fi
  # Locate the REPL input box (prompt glyph). If we cannot see it, we have NO
@@ -121,7 +121,7 @@ for attempt in $(seq 1 $((RETRIES + 1))); do
  fi
  # Input box located AND still carrying our tail => unsubmitted draft. Flush + retry.
  # (Submitted messages scroll up into history; a draft stays on the ❯ line.)
-  if [ -n "$snippet" ] && printf '%s' "$promptline" | grep -qF "$snippet"; then
+  if [ -n "$snippet" ] && grep -qF "$snippet" <<<"$promptline"; then
    status="draft"; continue
  fi
  # Input box located AND clear of our tail => positively submitted. This is the
@@ -123,7 +123,7 @@ _manifest_val() {
  # _manifest_val KEY — echo VALUE for KEY=VALUE in the manifest (blank if none).
  local key="$1"
  [ -f "$MANIFEST" ] || return 0
-  sed -n "s/^${key}=//p" "$MANIFEST" | head -n1 | tr -d '[:space:]'
+  awk -v key="$key" 'index($0, key "=") == 1 { sub(/^[^=]*=/, ""); gsub(/[[:space:]]/, ""); print; exit }' "$MANIFEST"
 }

 # _load_watchlist — validate the watch-list path + JSON + schema_version range.
@@ -267,7 +267,7 @@ _poll_source() {
    if snap_json="$(jq -ce '.' <<<"$rawmeta" 2>/dev/null)"; then
      snap_sha="$(jq -r 'if (.snapshot_sha|type) == "string" then .snapshot_sha else "" end' <<<"$snap_json")"
      snap_ts="$(jq -r 'if (.snapshot_ts|type) == "number" then (.snapshot_ts|floor|tostring) else "" end' <<<"$snap_json")"
-      if [ -n "$snap_sha" ] && ! printf '%s' "$snap_sha" | grep -Eq '^[0-9a-f]{7,64}$'; then
+      if [ -n "$snap_sha" ] && ! grep -Eq '^[0-9a-f]{7,64}$' <<<"$snap_sha"; then
        echo "detector.sh: source '$kind/$id' snapshot_sha rejected (not a 7-64 char lowercase-hex git sha) — snapshot metadata DROPPED, poll continues (#940)." >&2
        snap_sha=""
        snap_ts=""
@@ -275,7 +275,7 @@ _poll_source() {
      # A ts must be a sane positive epoch BEFORE any arithmetic touches it: a
      # negative or absurdly large value would make the shell integer comparison
      # below error out and silently KEEP the bad ts — validate first, compare after.
-      if [ -n "$snap_ts" ] && ! printf '%s' "$snap_ts" | grep -Eq '^[0-9]{1,12}$'; then
+      if [ -n "$snap_ts" ] && ! grep -Eq '^[0-9]{1,12}$' <<<"$snap_ts"; then
        echo "detector.sh: source '$kind/$id' snapshot_ts rejected (not a sane positive epoch) — snapshot_ts DROPPED, poll continues (#940)." >&2
        snap_ts=""
      fi
@@ -644,7 +644,8 @@ cmd_render() {
        oseq="$(jq -r '.observed_seq // "?"' <<<"$line")"
        oclass="$(jq -r '.class // "actionable"' <<<"$line")"
        oloc="$(jq -c '.locators // {}' <<<"$line")"
-        olabel="$(_locator_line "$oloc" | head -n1)"
+        olabel="$(_locator_line "$oloc")"
+        olabel="${olabel%%$'\n'*}"
        printf '  * seq %s [%s] %s\n' "$oseq" "$(_scrub_inline "$oclass")" "$olabel"
      done <<<"$pending"
    fi
@@ -146,7 +146,7 @@ EOF
 _manifest_val() {
  local key="$1"
  [ -f "$MANIFEST" ] || return 0
-  sed -n "s/^${key}=//p" "$MANIFEST" | head -n1 | tr -d '[:space:]'
+  awk -v key="$key" 'index($0, key "=") == 1 { sub(/^[^=]*=/, ""); gsub(/[[:space:]]/, ""); print; exit }' "$MANIFEST"
 }

 # _load_watchlist — validate path + JSON + shape + Gate B schema range (mirrors
@@ -25,7 +25,7 @@
    "lint": "eslint src",
    "typecheck": "tsc --noEmit",
    "test": "vitest run --passWithNoTests && pnpm run test:framework-shell",
-    "test:framework-shell": "bash framework/tools/quality/scripts/check-test-enumeration.sh && bash framework/tools/quality/scripts/test-check-test-enumeration.sh && python3 src/lease-broker/daemon_deadline_unittest.py && python3 src/lease-broker/normative_fragments_unittest.py && python3 src/lease-broker/receipt_challenge_unittest.py && python3 src/lease-broker/context_recovery_unittest.py && python3 src/lease-broker/recovery_runtime_unittest.py && python3 src/lease-broker/recovery_b1_adversarial_unittest.py && python3 src/lease-broker/framework_skill_portability_unittest.py && python3 src/mutator-gate/runtime_tools_unittest.py && python3 src/mutator-gate/runtime_launch_guard_unittest.py && python3 src/mutator-gate/version_coupling_unittest.py && python3 framework/tools/lease-broker/check-runtime-launches.py --root ../.. && bash framework/tools/codex/test-pr-diff-context.sh && bash framework/tools/qa/test-deps-preflight.sh && bash framework/tools/git/test-pr-review-gitea-comment.sh && bash framework/tools/git/test-pr-review-repo-host-override.sh && bash framework/tools/git/test-ci-queue-wait-branch-absent.sh && bash framework/tools/git/test-ci-queue-wait-tristate.sh && bash framework/tools/git/test-ci-queue-wait-github-checks.sh && bash framework/tools/git/test-pr-merge-queue-branch.sh && bash framework/tools/git/test-pr-merge-head-pin.sh && bash framework/tools/git/test-pr-merge-message-field.sh && bash framework/tools/git/test-git-credential-mosaic.sh && bash framework/tools/git/test-gitea-token-identity.sh && bash framework/tools/woodpecker/test-terminal-green-contract.sh && bash framework/tools/_scripts/test-install-ordering-guard.sh && bash framework/tools/tmux/agent-send.test.sh && bash framework/tools/wake/test-wake-store-ack.sh && bash framework/tools/wake/test-wake-store-enqueue-race.sh && bash framework/tools/wake/test-wake-digest-hmac.sh && bash framework/tools/wake/test-wake-digest-quarantine.sh && bash framework/tools/wake/test-wake-detector.sh && bash framework/tools/wake/test-wake-fn-oracle.sh && bash framework/tools/wake/test-wake-reconcile.sh && bash framework/tools/wake/test-wake-beacon.sh && bash framework/tools/wake/test-wake-preimage.sh && bash framework/tools/wake/test-wake-install.sh"
+    "test:framework-shell": "bash framework/tools/quality/scripts/check-test-enumeration.sh && bash framework/tools/quality/scripts/test-check-test-enumeration.sh && bash framework/tools/fleet/test-start-agent-session.sh && bash framework/systemd/user/test-fleet-units.sh && python3 src/lease-broker/daemon_deadline_unittest.py && python3 src/lease-broker/normative_fragments_unittest.py && python3 src/lease-broker/receipt_challenge_unittest.py && python3 src/lease-broker/context_recovery_unittest.py && python3 src/lease-broker/recovery_runtime_unittest.py && python3 src/lease-broker/recovery_b1_adversarial_unittest.py && python3 src/lease-broker/framework_skill_portability_unittest.py && python3 src/mutator-gate/runtime_tools_unittest.py && python3 src/mutator-gate/runtime_launch_guard_unittest.py && python3 src/mutator-gate/version_coupling_unittest.py && python3 framework/tools/lease-broker/check-runtime-launches.py --root ../.. && bash framework/tools/codex/test-pr-diff-context.sh && bash framework/tools/qa/test-deps-preflight.sh && bash framework/tools/git/test-pr-review-gitea-comment.sh && bash framework/tools/git/test-pr-review-repo-host-override.sh && bash framework/tools/git/test-ci-queue-wait-branch-absent.sh && bash framework/tools/git/test-ci-queue-wait-tristate.sh && bash framework/tools/git/test-ci-queue-wait-github-checks.sh && bash framework/tools/git/test-pr-merge-queue-branch.sh && bash framework/tools/git/test-pr-merge-head-pin.sh && bash framework/tools/git/test-pr-merge-message-field.sh && bash framework/tools/git/test-git-credential-mosaic.sh && bash framework/tools/git/test-gitea-token-identity.sh && bash framework/tools/git/test-explain-diagnostic-status-neutral.sh && bash framework/tools/git/test-detect-platform-outside-repo.sh && bash framework/tools/woodpecker/test-terminal-green-contract.sh && bash framework/tools/_scripts/test-install-ordering-guard.sh && bash framework/tools/tmux/agent-send.test.sh && bash framework/tools/wake/test-wake-store-ack.sh && bash framework/tools/wake/test-wake-store-enqueue-race.sh && bash framework/tools/wake/test-wake-digest-hmac.sh && bash framework/tools/wake/test-wake-digest-quarantine.sh && bash framework/tools/wake/test-wake-detector.sh && bash framework/tools/wake/test-wake-fn-oracle.sh && bash framework/tools/wake/test-wake-reconcile.sh && bash framework/tools/wake/test-wake-beacon.sh && bash framework/tools/wake/test-wake-preimage.sh && bash framework/tools/wake/test-wake-install.sh"
  },
  "dependencies": {
    "@mosaicstack/brain": "workspace:*",
@@ -131,13 +131,14 @@ async function exists(path: string): Promise<boolean> {
 }

 describe('projectRosterV2AgentGeneratedEnv', (): void => {
-  it('maps a roster-v2 agent to exactly the eight generated projection keys', (): void => {
+  it('maps a roster-v2 agent to exactly the nine generated projection keys', (): void => {
    const roster = parseRosterV2(rosterYaml, 'yaml');
    const agent = roster.agents.find((candidate) => candidate.name === 'coder0');
    expect(agent).toBeDefined();
    const values = projectRosterV2AgentGeneratedEnv(roster, agent!);
    expect(values).toEqual({
      MOSAIC_AGENT_NAME: 'coder0',
+      MOSAIC_GIT_IDENTITY: 'coder0',
      MOSAIC_AGENT_CLASS: 'code',
      MOSAIC_AGENT_RUNTIME: 'pi',
      MOSAIC_AGENT_MODEL: 'gpt-5.6-sol',
@@ -422,6 +422,7 @@ describe('fleet roster parsing', () => {
    expect(generateAgentEnv(roster, getRosterAgent(roster, 'coder0'))).toBe(
      [
        'MOSAIC_AGENT_NAME=coder0',
+        'MOSAIC_GIT_IDENTITY=coder0',
        // Reflects the roster's canonicalized compatibility class (A3a).
        'MOSAIC_AGENT_CLASS=code',
        'MOSAIC_AGENT_RUNTIME=codex',
@@ -3799,6 +3800,7 @@ describe('fleet add command', () => {
      'utf8',
    );
    expect(envContent).toContain('MOSAIC_AGENT_NAME=coder0');
+    expect(envContent).toContain('MOSAIC_GIT_IDENTITY=coder0');
    expect(envContent).toContain('MOSAIC_AGENT_RUNTIME=codex');
  });

@@ -484,6 +484,7 @@ function generateAgentEnvValues(
  const workingDirectory = agent.workingDirectory ?? roster.defaults.workingDirectory;
  return {
    MOSAIC_AGENT_NAME: agent.name,
+    MOSAIC_GIT_IDENTITY: agent.name,
    MOSAIC_AGENT_CLASS: agent.className,
    MOSAIC_AGENT_RUNTIME: agent.runtime,
    MOSAIC_AGENT_MODEL: agent.modelHint ?? '',
@@ -14,11 +14,9 @@ import {
  readdirSync,
  realpathSync,
  rmSync,
-  appendFileSync,
 } from 'node:fs';
-import { createHash, randomBytes } from 'node:crypto';
 import { createRequire } from 'node:module';
-import { homedir, hostname } from 'node:os';
+import { homedir } from 'node:os';
 import { join, dirname } from 'node:path';
 import type { Command } from 'commander';
 import {
@@ -44,163 +42,6 @@ const RUNTIME_LABELS: Record<RuntimeName, string> = {
  pi: 'Pi',
 };

-// ─── Harness home isolation ──────────────────────────────────────────────────
-// Mosaic-launched runtimes read config from a dedicated home under the mosaic
-// tree — never the operator's base install. A bare `claude` / `pi` therefore
-// keeps its own config AND its own auth, and stays a working break-glass no
-// matter what mosaic does to its own tree.
-//
-// These paths are manifest-UNKNOWN, which resolves to operator ownership
-// (framework-manifest.txt rule 3, #791), so a keep-mode `mosaic update` can
-// neither overwrite nor prune them. Overwrite-mode install still would.
-//
-// opencode has no dedicated config-dir variable and follows XDG, so isolating it
-// sets XDG_CONFIG_HOME for that process tree. That is blunter than the other
-// three: it also relocates XDG lookups for anything opencode spawns.
-const HARNESS_HOME_ENV: Record<RuntimeName, string> = {
-  claude: 'CLAUDE_CONFIG_DIR',
-  pi: 'PI_CODING_AGENT_DIR',
-  codex: 'CODEX_HOME',
-  opencode: 'XDG_CONFIG_HOME',
-};
-
-/** Dedicated mosaic-owned home for a runtime: ~/.config/mosaic/.<runtime> */
-function harnessHome(runtime: RuntimeName): string {
-  return join(MOSAIC_HOME, `.${runtime}`);
-}
-
-/**
- * Env overlay pointing a runtime at its mosaic-owned home. The directory is
- * created on demand so a first launch does not fail on a missing path.
- */
-function harnessEnv(runtime: RuntimeName): Record<string, string> {
-  const key = HARNESS_HOME_ENV[runtime];
-  if (!key) return {};
-  const home = harnessHome(runtime);
-  mkdirSync(home, { recursive: true });
-  return { [key]: home };
-}
-
-// ─── Launch record (immutable provenance) ────────────────────────────────────
-// MANDATORY and MECHANICAL: every launch appends one record of what the agent
-// actually launched with, written before exec. No model involvement, no opt-out.
-//
-// WHY LAUNCH-TIME AND NOT INSPECT-LATER: pi rewrites its own argv to a bare
-// `pi`, so /proc/<pid>/cmdline DESTROYS the launch evidence. That has already
-// produced a confident wrong diagnosis ("this agent bypassed the launcher"),
-// disproved only by the parent process's argv and only because the parent had
-// not yet exited. A record written before exec is the only place this survives.
-//
-// Lands in fleet/run/sessions/ — the #797 Runtime Session Ledger path, already
-// operator-classified in framework-manifest.txt and already covered by
-// test-upgrade-manifest-guard.sh, so an upgrade can neither overwrite nor prune
-// it.
-//
-// CORRELATION is by an explicit MOSAIC_LAUNCH_ID, never by pid: execRuntime()
-// uses spawnSync, so the runtime is a CHILD with a different pid.
-// launch-runtime.py appends the matching `lease.register` event.
-//
-// NEVER records a credential value: env is captured as PRESENT NAMES ONLY, and
-// oversized argv values (the composed system prompt) become a digest + length.
-const LAUNCH_LEDGER_DIR = join(MOSAIC_HOME, 'fleet', 'run', 'sessions');
-
-const CLI_VERSION: string | null = (() => {
-  try {
-    // Resolved RELATIVELY: the package `exports` map does not expose
-    // package.json, so '@mosaicstack/mosaic/package.json' throws
-    // ERR_PACKAGE_PATH_NOT_EXPORTED. Same relative depth from src/ and dist/.
-    return (createRequire(import.meta.url)('../../package.json') as { version: string }).version;
-  } catch {
-    return null;
-  }
-})();
-
-interface NormativeFragmentDigest {
-  source_id: string;
-  sha256: string | null;
-  bytes: number | null;
-  missing?: boolean;
-}
-
-function sha256Of(value: string | Buffer): string {
-  return createHash('sha256').update(value).digest('hex');
-}
-
-/**
- * Hash the normative sources injected into the agent. This is "what the agent
- * IS" — and it is the same fragment set the lease broker hashes for promotion,
- * so an unexpected digest here is a mechanically detectable red flag rather than
- * a matter of judgement.
- */
-function normativeFragmentDigests(runtime: RuntimeName): NormativeFragmentDigest[] {
-  const candidates: Array<[string, string]> = [
-    ['CONSTITUTION.md', join(MOSAIC_HOME, 'CONSTITUTION.md')],
-    ['AGENTS.md', join(MOSAIC_HOME, 'AGENTS.md')],
-    ['SOUL.md', join(MOSAIC_HOME, 'SOUL.md')],
-    ['USER.md', join(MOSAIC_HOME, 'USER.md')],
-    ['STANDARDS.md', join(MOSAIC_HOME, 'STANDARDS.md')],
-    ['TOOLS.md', join(MOSAIC_HOME, 'TOOLS.md')],
-    [`runtime/${runtime}/RUNTIME.md`, join(MOSAIC_HOME, 'runtime', runtime, 'RUNTIME.md')],
-  ];
-  return candidates.map(([sourceId, path]) => {
-    try {
-      const bytes = readFileSync(path);
-      return { source_id: sourceId, sha256: sha256Of(bytes), bytes: bytes.length };
-    } catch {
-      return { source_id: sourceId, sha256: null, bytes: null, missing: true };
-    }
-  });
-}
-
-/** argv with oversized values replaced by a digest, so the record stays small
- * and never inlines injected content verbatim. */
-function redactArgv(argv: string[]): string[] {
-  return argv.map((a) =>
-    typeof a === 'string' && a.length > 256
-      ? `<redacted sha256:${sha256Of(a).slice(0, 16)} bytes:${a.length}>`
-      : a,
-  );
-}
-
-function recordLaunch(runtime: RuntimeName, cliArgs: string[], yolo: boolean): void {
-  try {
-    mkdirSync(LAUNCH_LEDGER_DIR, { recursive: true, mode: 0o700 });
-    // Correlation id for the lease.register half. Set into process.env so it
-    // propagates through every `...process.env` / `...baseEnv` spread below.
-    const launchId = `${Date.now().toString(36)}-${randomBytes(6).toString('hex')}`;
-    process.env['MOSAIC_LAUNCH_ID'] = launchId;
-    const record = {
-      seq: Date.now(),
-      kind: 'session.launch',
-      launch_id: launchId,
-      ts: new Date().toISOString(),
-      host: hostname(),
-      pid: process.pid,
-      runtime,
-      mode: yolo ? 'yolo' : 'normal',
-      cwd: process.cwd(),
-      cli_version: CLI_VERSION,
-      config_home: harnessHome(runtime),
-      config_home_isolated: true,
-      config_home_env: HARNESS_HOME_ENV[runtime] ?? null,
-      argv: redactArgv(cliArgs),
-      normative_fragments: normativeFragmentDigests(runtime),
-      // names only — values are never recorded
-      mosaic_env_present: Object.keys(process.env)
-        .filter((k) => k.startsWith('MOSAIC_'))
-        .sort(),
-    };
-    appendFileSync(join(LAUNCH_LEDGER_DIR, 'events.ndjson'), `${JSON.stringify(record)}\n`, {
-      mode: 0o600,
-    });
-  } catch (err) {
-    // Never block a launch on bookkeeping — but never fail silently either.
-    console.error(
-      `[mosaic] WARNING: launch record not written: ${err instanceof Error ? err.message : String(err)}`,
-    );
-  }
-}
-
 // ─── Pre-flight checks ──────────────────────────────────────────────────────

 function checkMosaicHome(): void {
@@ -264,11 +105,11 @@ interface SettingsAudit {

 function auditClaudeSettings(): SettingsAudit {
  const warnings: string[] = [];
-  const settingsPath = join(harnessHome('claude'), 'settings.json');
+  const settingsPath = join(homedir(), '.claude', 'settings.json');
  const settings = readJson(settingsPath);

  if (!settings) {
-    warnings.push(`${settingsPath} not found — hooks and plugins will be missing`);
+    warnings.push('~/.claude/settings.json not found — hooks and plugins will be missing');
    return { warnings };
  }

@@ -720,9 +561,7 @@ function skillRealPath(dir: string): string {
 /** Skill roots Pi auto-discovers natively (no `--skill` needed): its global
 * skills dir and the project-local one relative to the launch cwd. */
 function piNativeSkillRoots(cwd: string = process.cwd()): string[] {
-  // PI_CODING_AGENT_DIR replaces ~/.pi/agent (not ~/.pi), so skills live at
-  // <home>/skills — there is no extra 'agent' segment under the isolated home.
-  return [join(harnessHome('pi'), 'skills'), join(cwd, '.pi', 'skills')];
+  return [join(homedir(), '.pi', 'agent', 'skills'), join(cwd, '.pi', 'skills')];
 }

 /** Enumerate skill dirs under a set of roots, deduped by real path. A directory
@@ -925,13 +764,12 @@ function launchRuntime(runtime: RuntimeName, args: string[], yolo: boolean): nev
        cliArgs.push(...args);
      }
      console.log(`[mosaic] Launching ${label}${modeStr}${missionStr}...`);
-      recordLaunch('claude', cliArgs, yolo);
      execLeaseGatedRuntime('claude', cliArgs, process.env, yolo);
      break;
    }

    case 'codex': {
-      ensureRuntimeConfig('codex', join(harnessHome('codex'), 'instructions.md'));
+      ensureRuntimeConfig('codex', join(homedir(), '.codex', 'instructions.md'));
      const cliArgs = yolo ? ['--dangerously-bypass-approvals-and-sandbox'] : [];
      if (hasMissionNoArgs) {
        cliArgs.push(missionPrompt);
@@ -939,17 +777,14 @@ function launchRuntime(runtime: RuntimeName, args: string[], yolo: boolean): nev
        cliArgs.push(...args);
      }
      console.log(`[mosaic] Launching ${label}${modeStr}${missionStr}...`);
-      recordLaunch('codex', cliArgs, yolo);
-      execRuntime('codex', cliArgs, { ...process.env, ...harnessEnv('codex') });
+      execRuntime('codex', cliArgs);
      break;
    }

    case 'opencode': {
-      // opencode follows XDG, so its config resolves to $XDG_CONFIG_HOME/opencode.
-      ensureRuntimeConfig('opencode', join(harnessHome('opencode'), 'opencode', 'AGENTS.md'));
+      ensureRuntimeConfig('opencode', join(homedir(), '.config', 'opencode', 'AGENTS.md'));
      console.log(`[mosaic] Launching ${label}${modeStr}...`);
-      recordLaunch('opencode', args, yolo);
-      execRuntime('opencode', args, { ...process.env, ...harnessEnv('opencode') });
+      execRuntime('opencode', args);
      break;
    }

@@ -964,7 +799,6 @@ function launchRuntime(runtime: RuntimeName, args: string[], yolo: boolean): nev
        cliArgs.push(...args);
      }
      console.log(`[mosaic] Launching ${label}${modeStr}${missionStr}...`);
-      recordLaunch('pi', cliArgs, yolo);
      execLeaseGatedRuntime('pi', cliArgs);
      break;
    }
@@ -1001,7 +835,6 @@ function execLeaseGatedRuntime(
    [launcher, ...dangerousArgs, '--runtime', runtime, '--', runtime, ...args],
    {
      ...baseEnv,
-      ...harnessEnv(runtime),
      MOSAIC_LEASE_BROKER_SOCKET: defaultLeaseBrokerSocket(baseEnv),
      MOSAIC_RUNTIME_GENERATION: baseEnv['MOSAIC_RUNTIME_GENERATION'] ?? '1',
    },
@@ -358,6 +358,7 @@ function generatedValues(
 ): Readonly<Record<string, string>> {
  return {
    MOSAIC_AGENT_NAME: agent.name,
+    MOSAIC_GIT_IDENTITY: agent.name,
    MOSAIC_AGENT_CLASS: agent.className,
    MOSAIC_AGENT_RUNTIME: agent.runtime,
    MOSAIC_AGENT_MODEL: agent.model,
@@ -380,7 +380,7 @@ const COMMAND_RECORDS: Readonly<Record<string, RegExp>> = {

 const DATA_PROFILE_BODIES: Readonly<Record<string, string>> = {
  'DATA.DOTENV.FLEET_LAUNCH':
-    'MOSAIC_AGENT_NAME=<roster name>\nMOSAIC_AGENT_CLASS=<roster class>\nMOSAIC_AGENT_RUNTIME=<roster runtime>\nMOSAIC_AGENT_MODEL=<roster model hint>\nMOSAIC_AGENT_REASONING=<roster reasoning>\nMOSAIC_AGENT_TOOL_POLICY=<roster tool policy>\nMOSAIC_AGENT_WORKDIR=<absolute roster work directory>\nMOSAIC_TMUX_SOCKET=<roster socket or empty>',
+    'MOSAIC_AGENT_NAME=<roster name>\nMOSAIC_GIT_IDENTITY=<roster name>\nMOSAIC_AGENT_CLASS=<roster class>\nMOSAIC_AGENT_RUNTIME=<roster runtime>\nMOSAIC_AGENT_MODEL=<roster model hint>\nMOSAIC_AGENT_REASONING=<roster reasoning>\nMOSAIC_AGENT_TOOL_POLICY=<roster tool policy>\nMOSAIC_AGENT_WORKDIR=<absolute roster work directory>\nMOSAIC_TMUX_SOCKET=<roster socket or empty>',
  'DATA.TEXT_TABLE.FLEET_TASKS':
    '| W-FLEET | in-progress | Fleet (agent-session execution layer) | Phase 2/5 | docs/fleet/TASKS.md | observability dogfooded on live stub fleet; control plane rides federation (W1) |',
  'DATA.TEXT_DIAGRAM.BACKLOG_FLOW':
@@ -406,7 +406,7 @@ const DATA_PROFILE_BODIES: Readonly<Record<string, string>> = {
  'DATA.JSON.MUTATION_RESULT':
    '{\n  "applied": false,\n  "authoritativeRoster": "committed",\n  "projections": "incomplete",\n  "recovery": {\n    "code": "projection-apply-failed",\n    "action": "regenerate-projections-from-roster"\n  }\n}',
  'DATA.DOTENV.GENERATED_ENV':
-    'MOSAIC_AGENT_NAME=<roster name>\nMOSAIC_AGENT_CLASS=<roster class>\nMOSAIC_AGENT_RUNTIME=<roster runtime>\nMOSAIC_AGENT_MODEL=<roster model hint>\nMOSAIC_AGENT_REASONING=<roster reasoning>\nMOSAIC_AGENT_TOOL_POLICY=<roster tool policy>\nMOSAIC_AGENT_WORKDIR=<absolute roster work directory>\nMOSAIC_TMUX_SOCKET=<roster socket or empty>',
+    'MOSAIC_AGENT_NAME=<roster name>\nMOSAIC_GIT_IDENTITY=<roster name>\nMOSAIC_AGENT_CLASS=<roster class>\nMOSAIC_AGENT_RUNTIME=<roster runtime>\nMOSAIC_AGENT_MODEL=<roster model hint>\nMOSAIC_AGENT_REASONING=<roster reasoning>\nMOSAIC_AGENT_TOOL_POLICY=<roster tool policy>\nMOSAIC_AGENT_WORKDIR=<absolute roster work directory>\nMOSAIC_TMUX_SOCKET=<roster socket or empty>',
  'DATA.YAML.ROSTER_FIELDS':
    'version: 2\ngeneration: 1\ntransport: tmux\ntmux:\n  socket_name: mosaic-fleet\n  holder_session: _holder\ndefaults:\n  working_directory: ~/src\n  runtime: pi\nruntimes:\n  pi:\n    reset_command: /new\nagents:\n  - name: coder0\n    alias: Coder 0\n    class: code\n    runtime: pi\n    provider: openai\n    model: gpt-5.6-sol\n    reasoning: high\n    tool_policy: code\n    working_directory: ~/src\n    persistent_persona: false\n    reset_between_tasks: true\n    lifecycle:\n      enabled: true\n      desired_state: stopped\n    launch:\n      yolo: true',
 };
@@ -922,8 +922,8 @@ describe('fleet operator documentation', (): void => {
    );
    expect(
      surfaces.filter((surface): boolean => surface.category === 'InlineLiteral'),
-    ).toHaveLength(858);
-    expect(surfaces).toHaveLength(882);
+    ).toHaveLength(863);
+    expect(surfaces).toHaveLength(887);

    const rosterSource = await readFile(join(fleetDocs, 'examples', 'roster-v2.yaml'), 'utf8');
    const auxiliary: CodeSurface = {
@@ -597,6 +597,7 @@ export function projectRosterV2AgentGeneratedEnv(
 ): Readonly<Record<string, string>> {
  return {
    MOSAIC_AGENT_NAME: agent.name,
+    MOSAIC_GIT_IDENTITY: agent.name,
    MOSAIC_AGENT_CLASS: agent.className,
    MOSAIC_AGENT_RUNTIME: agent.runtime,
    MOSAIC_AGENT_MODEL: agent.model,
@@ -22,6 +22,7 @@ import {

 const generatedValues = {
  MOSAIC_AGENT_NAME: 'coder0',
+  MOSAIC_GIT_IDENTITY: 'coder0',
  MOSAIC_AGENT_CLASS: 'code',
  MOSAIC_AGENT_RUNTIME: 'pi',
  MOSAIC_AGENT_MODEL: 'openai-codex/gpt-5.6-sol',
@@ -45,6 +46,7 @@ describe('generated fleet agent environment boundary', (): void => {
    expect(renderGeneratedAgentEnvironment(generatedValues)).toBe(
      [
        'MOSAIC_AGENT_NAME=coder0',
+        'MOSAIC_GIT_IDENTITY=coder0',
        'MOSAIC_AGENT_CLASS=code',
        'MOSAIC_AGENT_RUNTIME=pi',
        'MOSAIC_AGENT_MODEL=openai-codex/gpt-5.6-sol',
@@ -78,6 +80,22 @@ describe('generated fleet agent environment boundary', (): void => {
    expect(String(error)).toMatch(/key=.*sha256=/);
  });

+  it.each([
+    ['unsafe-git-identity', 'other/identity'],
+    ['git-identity-mismatch', 'reviewer0'],
+  ])('rejects %s before any launch consumer can use it', (code: string, identity: string): void => {
+    expect((): void => {
+      renderGeneratedAgentEnvironment({
+        ...generatedValues,
+        MOSAIC_GIT_IDENTITY: identity,
+      });
+    }).toThrow(
+      expect.objectContaining({
+        diagnostic: expect.objectContaining({ code, key: 'MOSAIC_GIT_IDENTITY' }),
+      }),
+    );
+  });
+
  it('rejects unsafe generated paths before any launch consumer can use them', (): void => {
    expect((): void => {
      renderGeneratedAgentEnvironment({
@@ -73,6 +73,7 @@ export class AgentEnvBoundaryError extends Error {

 export const GENERATED_AGENT_ENV_KEYS = [
  'MOSAIC_AGENT_NAME',
+  'MOSAIC_GIT_IDENTITY',
  'MOSAIC_AGENT_CLASS',
  'MOSAIC_AGENT_RUNTIME',
  'MOSAIC_AGENT_MODEL',
@@ -402,6 +403,7 @@ function assertGeneratedValues(values: Readonly<Record<string, string>>): void {
    if (value === undefined) throw new AgentEnvBoundaryError('missing-key', key, '');
  }
  const name = requiredGeneratedValue(values, 'MOSAIC_AGENT_NAME');
+  const gitIdentity = requiredGeneratedValue(values, 'MOSAIC_GIT_IDENTITY');
  const className = requiredGeneratedValue(values, 'MOSAIC_AGENT_CLASS');
  const runtime = requiredGeneratedValue(values, 'MOSAIC_AGENT_RUNTIME');
  const model = requiredGeneratedValue(values, 'MOSAIC_AGENT_MODEL');
@@ -412,6 +414,12 @@ function assertGeneratedValues(values: Readonly<Record<string, string>>): void {

  if (!AGENT_NAME.test(name))
    throw new AgentEnvBoundaryError('unsafe-agent-name', 'MOSAIC_AGENT_NAME', name);
+  if (!AGENT_NAME.test(gitIdentity)) {
+    throw new AgentEnvBoundaryError('unsafe-git-identity', 'MOSAIC_GIT_IDENTITY', gitIdentity);
+  }
+  if (gitIdentity !== name) {
+    throw new AgentEnvBoundaryError('git-identity-mismatch', 'MOSAIC_GIT_IDENTITY', gitIdentity);
+  }
  if (!POLICY_NAME.test(className)) {
    throw new AgentEnvBoundaryError('unsafe-class', 'MOSAIC_AGENT_CLASS', className);
  }
@@ -1405,6 +1405,7 @@ function generatedValues(
 ): Readonly<Record<string, string>> {
  return {
    MOSAIC_AGENT_NAME: agent.name,
+    MOSAIC_GIT_IDENTITY: agent.name,
    MOSAIC_AGENT_CLASS: agent.className,
    MOSAIC_AGENT_RUNTIME: agent.runtime,
    MOSAIC_AGENT_MODEL: agent.model,
@@ -72,8 +72,9 @@ elif [[ -n "$DATA_DIR" ]]; then
  while IFS= read -r file; do
    [[ -z "$file" ]] && continue
    done_total=$((done_total + 1))
-    if git -C "$DATA_DIR" log --since="${WINDOW_DAYS} days ago" --pretty='%s' -- "$file" 2>/dev/null \
-         | grep -qiE 'reopen|revert|fix|regression|wrong|incorrect|redo'; then
+    history_rc=0
+    history="$(git -C "$DATA_DIR" log --since="${WINDOW_DAYS} days ago" --pretty='%s' -- "$file" 2>/dev/null)" || history_rc=$?
+    if [[ "$history_rc" -eq 0 ]] && grep -qiE 'reopen|revert|fix|regression|wrong|incorrect|redo' <<<"$history"; then
      detectable=$((detectable + 1))
    fi
  done < <(find "$DATA_DIR" -type f -name '*.json' 2>/dev/null)
@@ -64,9 +64,9 @@ for line in "${LINES[@]}"; do
  #   - build/test/lint/type/ci signals → CI would have caught it
  #   - security/auth/permission/data/migration → human review would flag it
  #   - everything else (logic/UX/assumption/edge) → only-self-reflection bucket
-  if printf '%s' "$subj" | grep -qiE 'test|lint|type|build|ci|compile|typo'; then
+  if grep -qiE 'test|lint|type|build|ci|compile|typo' <<<"$subj"; then
    ci=$((ci + 1))
-  elif printf '%s' "$subj" | grep -qiE 'security|auth|permission|rbac|secret|migration|data|sql|injection'; then
+  elif grep -qiE 'security|auth|permission|rbac|secret|migration|data|sql|injection' <<<"$subj"; then
    human=$((human + 1))
  else
    selfonly=$((selfonly + 1))
@@ -0,0 +1,28 @@
+[
+  "tools/matrix-presence-harness/run.sh:TSX_CLI=\"$(ls -d \"${REPO}\"/node_modules/.pnpm/tsx@*/node_modules/tsx/dist/cli.mjs 2>/dev/null | head -1)\"",
+  "tools/e2e-install-test.sh:if ! mosaic gateway --help 2>&1 | grep -q 'verify'; then",
+  "tools/install.sh:EXTRACTED_DIR=\"$(find \"$WORK_DIR\" -maxdepth 1 -mindepth 1 -type d | head -1)\"",
+  "scripts/analysis/reflect-board-history.sh:if git -C \"$DATA_DIR\" log --since=\"${WINDOW_DAYS} days ago\" --pretty='%s' -- \"$file\" 2>/dev/null  | grep -qiE 'reopen|revert|fix|regression|wrong|incorrect|redo'; then",
+  "scripts/analysis/reflect-git-history.sh:if printf '%s' \"$subj\" | grep -qiE 'test|lint|type|build|ci|compile|typo'; then",
+  "scripts/analysis/reflect-git-history.sh:elif printf '%s' \"$subj\" | grep -qiE 'security|auth|permission|rbac|secret|migration|data|sql|injection'; then",
+  "packages/mosaic/framework/tools/authentik/user-create.sh:group_pk=$(echo \"$group_response\" | jq -r \".results[] | select(.name == \\\"$GROUP\\\") | .pk\" | head -1)",
+  "packages/mosaic/framework/tools/git/mutate-push-guard.sh:PROSE_LO=\"$(grep -n '^usage() {' \"$BAK\" | head -1 | cut -d: -f1)\"",
+  "packages/mosaic/framework/tools/orchestrator/session-resume.sh:echo \"$dirty_files\" | head -20 | while IFS= read -r line; do",
+  "packages/mosaic/framework/tools/prdy/prdy-status.sh:if echo \"$PRD_CONTENT\" | grep -qiE \"$pattern\"; then",
+  "packages/mosaic/framework/tools/qa/reflect-stop-hook.sh:if printf '%s' \"$p\" | grep -qiE 'auth|login|session|token|permission|rbac|credential|secret'; then echo auth; return; fi",
+  "packages/mosaic/framework/tools/qa/reflect-stop-hook.sh:if printf '%s' \"$p\" | grep -qiE 'migration|prisma|schema|\\.sql|entity|repository|seed'; then echo data; return; fi",
+  "packages/mosaic/framework/tools/qa/reflect-stop-hook.sh:if printf '%s' \"$p\" | grep -qiE 'docker|\\.woodpecker|compose|traefik|deploy|helm|k8s|terraform'; then echo infra; return; fi",
+  "packages/mosaic/framework/tools/qa/reflect-stop-hook.sh:if printf '%s' \"$p\" | grep -qiE 'package\\.json|tsconfig|turbo\\.json|pnpm-|\\.config\\.|eslint|vite'; then echo build; return; fi",
+  "packages/mosaic/framework/tools/qa/reflect-stop-hook.sh:if printf '%s' \"$p\" | grep -qE '\\.tsx|\\.css|components/|apps/web/'; then echo ui; return; fi",
+  "packages/mosaic/framework/tools/qa/reflect-stop-hook.sh:if printf '%s' \"$p\" | grep -qE '\\.spec\\.|\\.test\\.|__tests__/'; then echo test; return; fi",
+  "packages/mosaic/framework/tools/qa/reflect-stop-hook.sh:if printf '%s' \"$p\" | grep -qE '\\.md$|docs/'; then echo docs; return; fi",
+  "packages/mosaic/framework/tools/qa/typecheck-hook.sh:FILE_PATH=$(echo \"$JSON_INPUT\" | grep -o '\"file_path\"[[:space:]]*:[[:space:]]*\"[^\"]*\"' | sed 's/.*\"\\([^\"]*\\)\"$/\\1/' | head -1)",
+  "packages/mosaic/framework/tools/qa/typecheck-hook.sh:RELEVANT=$(echo \"$OUTPUT\" | grep -A2 \"$BASENAME\" 2>/dev/null || echo \"$OUTPUT\" | head -20)",
+  "packages/mosaic/framework/tools/tmux/send-message.sh:if printf '%s' \"$pane\" | grep -qF \"$QUEUED_RE\"; then",
+  "packages/mosaic/framework/tools/tmux/send-message.sh:if [ -n \"$snippet\" ] && printf '%s' \"$promptline\" | grep -qF \"$snippet\"; then",
+  "packages/mosaic/framework/tools/wake/detector.sh:sed -n \"s/^${key}=//p\" \"$MANIFEST\" | head -n1 | tr -d '[:space:]'",
+  "packages/mosaic/framework/tools/wake/detector.sh:if [ -n \"$snap_sha\" ] && ! printf '%s' \"$snap_sha\" | grep -Eq '^[0-9a-f]{7,64}$'; then",
+  "packages/mosaic/framework/tools/wake/detector.sh:if [ -n \"$snap_ts\" ] && ! printf '%s' \"$snap_ts\" | grep -Eq '^[0-9]{1,12}$'; then",
+  "packages/mosaic/framework/tools/wake/digest.sh:olabel=\"$(_locator_line \"$oloc\" | head -n1)\"",
+  "packages/mosaic/framework/tools/wake/reconcile.sh:sed -n \"s/^${key}=//p\" \"$MANIFEST\" | head -n1 | tr -d '[:space:]'"
+]
@@ -0,0 +1,135 @@
+import assert from 'node:assert/strict';
+import { spawnSync } from 'node:child_process';
+import { chmod, mkdtemp, readFile, rm, writeFile } from 'node:fs/promises';
+import { tmpdir } from 'node:os';
+import path from 'node:path';
+import test from 'node:test';
+
+const ROOT = new URL('../', import.meta.url);
+const EXPECTED_BASELINE_SITES = 26;
+const TARGETS = [
+  'tools/matrix-presence-harness/run.sh',
+  'tools/e2e-install-test.sh',
+  'tools/install.sh',
+  'scripts/agent/session-start.sh',
+  'scripts/analysis/reflect-board-history.sh',
+  'scripts/analysis/reflect-git-history.sh',
+  'packages/mosaic/framework/templates/repo/scripts/agent/session-start.sh',
+  'packages/mosaic/framework/tools/authentik/user-create.sh',
+  'packages/mosaic/framework/tools/git/mutate-push-guard.sh',
+  'packages/mosaic/framework/tools/orchestrator/session-resume.sh',
+  'packages/mosaic/framework/tools/prdy/prdy-status.sh',
+  'packages/mosaic/framework/tools/qa/reflect-stop-hook.sh',
+  'packages/mosaic/framework/tools/qa/typecheck-hook.sh',
+  'packages/mosaic/framework/tools/tmux/send-message.sh',
+  'packages/mosaic/framework/tools/wake/detector.sh',
+  'packages/mosaic/framework/tools/wake/digest.sh',
+  'packages/mosaic/framework/tools/wake/reconcile.sh',
+];
+
+// These statuses are explicitly non-load-bearing or unreachable at designed input.
+// They remain inventoried until the final #1099 tranche records every verdict.
+const ACCEPTED = [
+  ['tools/install.sh', 'mosaic-bak-', '|| true'],
+  ['tools/install.sh', 'mosaicstack-mosaic-*.tgz', 'head -1'],
+  ['tools/install.sh', 'mosaicstack-gateway-*.tgz', 'head -1'],
+  ['scripts/agent/session-start.sh', 'docs/scratchpads/*.md', '|| true'],
+  [
+    'packages/mosaic/framework/templates/repo/scripts/agent/session-start.sh',
+    'docs/scratchpads/*.md',
+    '|| true',
+  ],
+];
+
+const earlyExit =
+  /(?<!\|)\|(?!\|)[^;\n]*(?:grep\b[^;\n]*(?:-[A-Za-z]*q|--quiet|-m\s*1)|head\b(?:\s|$))/;
+
+function scan(sources) {
+  const found = [];
+  for (const [file, rawSource] of sources) {
+    const source = rawSource.replace(/\\\n\s*/g, ' ');
+    for (const rawLine of source.split('\n')) {
+      const line = rawLine.trim();
+      if (!earlyExit.test(line)) continue;
+      const accepted = ACCEPTED.some(
+        ([acceptedFile, ...fragments]) =>
+          acceptedFile === file && fragments.every((item) => line.includes(item)),
+      );
+      if (!accepted) found.push(`${file}:${line}`);
+    }
+  }
+  return found;
+}
+
+async function currentSources() {
+  return Promise.all(
+    TARGETS.map(async (file) => [file, await readFile(new URL(file, ROOT), 'utf8')]),
+  );
+}
+
+test('the registered baseline denominator is exactly 26 unsafe sites', async () => {
+  const baseline = JSON.parse(
+    await readFile(new URL('scripts/fixtures/pipefail-early-exit-baseline.json', ROOT), 'utf8'),
+  );
+  assert.equal(baseline.length, EXPECTED_BASELINE_SITES);
+  assert.equal(new Set(baseline).size, EXPECTED_BASELINE_SITES);
+  const fixtureSources = baseline.map((site) => {
+    const separator = site.indexOf(':');
+    assert.ok(separator > 0, `invalid baseline site: ${site}`);
+    return [site.slice(0, separator), site.slice(separator + 1)];
+  });
+  assert.deepEqual(scan(fixtureSources), baseline);
+});
+
+test('load-bearing pipefail paths do not pipe into early-exiting consumers', async () => {
+  assert.deepEqual(scan(await currentSources()), []);
+});
+
+test('gateway verify capability preserves the complete help-probe truth table', async () => {
+  const directory = await mkdtemp(path.join(tmpdir(), 'gateway-help-probe-'));
+  const mosaic = path.join(directory, 'mosaic');
+  const probe = new URL('tools/e2e-gateway-verify-supported.sh', ROOT).pathname;
+  try {
+    await writeFile(
+      mosaic,
+      '#!/usr/bin/env bash\nprintf \'%s\\n\' "${MOCK_HELP_OUTPUT:-}"\nexit "${MOCK_HELP_RC:-0}"\n',
+    );
+    await chmod(mosaic, 0o755);
+    const run = (rc, output) =>
+      spawnSync('bash', [probe], {
+        env: {
+          ...process.env,
+          PATH: `${directory}:${process.env.PATH}`,
+          MOCK_HELP_RC: String(rc),
+          MOCK_HELP_OUTPUT: output,
+        },
+      }).status;
+
+    assert.equal(run(0, 'commands: verify'), 0);
+    assert.equal(run(0, 'commands: install'), 1);
+    assert.equal(run(1, 'commands: verify'), 1);
+  } finally {
+    await rm(directory, { recursive: true, force: true });
+  }
+});
+
+test('board-history preserves non-git data-dir as a non-detectable result', async () => {
+  const directory = await mkdtemp(path.join(tmpdir(), 'reflect-board-non-git-'));
+  try {
+    await writeFile(path.join(directory, 'task.json'), '{}\n');
+    const result = spawnSync(
+      'bash',
+      [
+        new URL('scripts/analysis/reflect-board-history.sh', ROOT).pathname,
+        '--data-dir',
+        directory,
+      ],
+      { encoding: 'utf8' },
+    );
+    assert.equal(result.status, 0, result.stderr);
+    assert.match(result.stdout, /"done_tasks": 1/);
+    assert.match(result.stdout, /"detectable_outcomes": 0/);
+  } finally {
+    await rm(directory, { recursive: true, force: true });
+  }
+});
@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+# Exit 0 only when the capability probe itself succeeds and advertises verify.
+# A failed help command and a successful response without verify are both
+# unsupported, matching the historical e2e-install-test.sh conditional.
+set -uo pipefail
+
+gateway_help_rc=0
+gateway_help="$(mosaic gateway --help 2>&1)" || gateway_help_rc=$?
+[[ "$gateway_help_rc" -eq 0 ]] || exit 1
+grep -q 'verify' <<<"$gateway_help"
@@ -136,7 +136,7 @@ fi
 echo "=== [inner] Running mosaic gateway verify ==="
 # `gateway verify` was added in feat/mosaic-first-run-ux.
 # If the installed version pre-dates this, skip gracefully.
-if ! mosaic gateway --help 2>&1 | grep -q 'verify'; then
+if ! bash /repo/tools/e2e-gateway-verify-supported.sh; then
  echo "[SKIP] 'mosaic gateway verify' not available in installed version ${INSTALLED_VERSION}."
  echo "[SKIP] This command was added in the feat/mosaic-first-run-ux release."
  echo "[SKIP] Re-run after the new version is published to validate this step."
@@ -308,13 +308,17 @@ ensure_monorepo() {
    exit 1
  fi

-  # Gitea archives extract to <repo-name>/ inside the work dir
-  EXTRACTED_DIR="$(find "$WORK_DIR" -maxdepth 1 -mindepth 1 -type d | head -1)"
-  if [[ -z "$EXTRACTED_DIR" ]] || [[ ! -d "$EXTRACTED_DIR" ]]; then
-    fail "Could not locate extracted source in archive."
+  # Gitea archives extract to exactly one <repo-name>/ inside the work dir.
+  # Read the complete population so a malformed multi-root archive reaches the
+  # named diagnostic instead of aborting on an upstream SIGPIPE under pipefail.
+  local -a extracted_dirs=()
+  mapfile -d '' -t extracted_dirs < <(find "$WORK_DIR" -maxdepth 1 -mindepth 1 -type d -print0)
+  if [[ "${#extracted_dirs[@]}" -ne 1 ]] || [[ ! -d "${extracted_dirs[0]:-}" ]]; then
+    fail "Could not locate exactly one extracted source directory in archive."
    ls -la "$WORK_DIR" >&2
    exit 1
  fi
+  EXTRACTED_DIR="${extracted_dirs[0]}"
 }

 # Build @mosaicstack/mosaic + @mosaicstack/gateway from source and install both
@@ -35,7 +35,10 @@ export DARK_THRESHOLD_MS="${DARK_THRESHOLD_MS:-6000}"
 export AGENT_SLUGS="${AGENT_SLUGS:-alpha,bravo,charlie}"
 export VICTIM_SLUG="${VICTIM_SLUG:-charlie}"

-TSX_CLI="$(ls -d "${REPO}"/node_modules/.pnpm/tsx@*/node_modules/tsx/dist/cli.mjs 2>/dev/null | head -1)"
+shopt -s nullglob
+TSX_CANDIDATES=("${REPO}"/node_modules/.pnpm/tsx@*/node_modules/tsx/dist/cli.mjs)
+shopt -u nullglob
+TSX_CLI="${TSX_CANDIDATES[0]:-}"
 if [[ -z "${TSX_CLI}" ]]; then
  echo "run.sh: tsx not found under node_modules — run pnpm install first" >&2
  exit 1
Author	SHA1	Message	Date
f10-coder	d60b4a22e6	fix(shell): preserve pipeline verdict semantics ci/woodpecker/pr/ci Pipeline was successful Details	2026-08-07 04:24:08 -05:00
f10-coder	16ea503b2d	fix(shell): remove runtime early-exit pipe hazards ci/woodpecker/pr/ci Pipeline was successful Details	2026-08-07 03:58:35 -05:00
be-coder-08	df4c591ab4	fix(fleet): make framework shell assertions SIGPIPE-safe (#1100 ) ci/woodpecker/push/publish Pipeline was successful Details ci/woodpecker/push/ci Pipeline was successful Details	2026-08-07 08:21:20 +00:00
be-coder-06andMos	4fa2768962	fix(fleet): propagate roster git identity (#1073 ) ci/woodpecker/push/publish Pipeline was successful Details ci/woodpecker/push/ci Pipeline was successful Details Co-authored-by: be-coder-06 <[email protected]>	2026-08-07 07:07:45 +00:00
Mos	aa0a7b5fa2	fix(tools/git): issue-close.sh silently dropped the closing comment (#1085 ) ci/woodpecker/push/publish Pipeline was successful Details ci/woodpecker/push/ci Pipeline was successful Details	2026-08-07 05:59:12 +00:00
Mos	42ac19af48	test(gateway): size the enrollment clamp tolerance to CI jitter, not to a fast machine (closes #1090 ) (#1094 ) ci/woodpecker/push/publish Pipeline failed Details ci/woodpecker/push/ci Pipeline was successful Details	2026-08-07 05:33:38 +00:00
Mos	f744f32214	feat(tools/git): explain tea's misleading `user does not exist` error (stale token, not a missing account) (#1086 ) ci/woodpecker/push/publish Pipeline was successful Details ci/woodpecker/push/ci Pipeline was successful Details	2026-08-07 05:07:40 +00:00
Mos	8ff7aac0ca	fix(tools/git): detect-platform died silently outside a repo, taking every wrapper with it (#1089 ) ci/woodpecker/push/publish Pipeline was successful Details ci/woodpecker/push/ci Pipeline was successful Details	2026-08-07 04:26:36 +00:00