test(fleet): bound stale heartbeat observation (#1043 )

test(fleet): make stale marker BusyBox-safe (#1043 )
test(fleet): carry identity regression in CI (#1043 )
2026-08-06 02:20:34 -05:00 · 2026-08-06 02:20:34 -05:00 · 2026-08-06 02:20:34 -05:00 · 2026-08-06 02:20:05 -05:00
23 changed files with 408 additions and 620 deletions
@@ -146,6 +146,36 @@ 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.
+
 ---

 ## 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 +1,229 @@
+# #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.
@@ -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"

@@ -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"
@@ -62,6 +62,19 @@ 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="$2"
@@ -71,6 +84,7 @@ write_generated() {
  chmod 600 "$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 +102,7 @@ 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" "$agent"
@@ -114,6 +129,42 @@ fi
 echo "$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"

+# 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 $case_name rejection"
+  echo "$output" | grep -qF "code=$expected_code" || \
+    fail "Git identity $case_name diagnostic omitted code $expected_code"
+}
+
+assert_git_identity_rejected missing missing-key
+assert_git_identity_rejected unsafe unsafe-git-identity
+assert_git_identity_rejected mismatch git-identity-mismatch
+assert_git_identity_rejected local-shadow generated-key-shadow
+
 # The generated-file parent is a security boundary too: even a private regular
 # file is untrusted if its parent can be replaced or written by another user.
 # Validation must happen before fake tmux receives even a has-session call.
@@ -274,6 +325,18 @@ after_pane_env=$(printf '%s\n' "$pane_args" | grep -n -m1 -F '/usr/bin/env' | cu
 printf '%s\n' "$pane_args" | tail -n +"$after_pane_env" | grep -qxF -- '-i' || \
  fail "pane command did not clear its environment"
 pane_environment=$(tr '\0' '\n' < "$HOME_PANE_BOUNDARY/fleet/pane-environment")
+# 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: $missing_or_changed_keys"
+fi
 echo "$pane_environment" | grep -qxF "HOME=$PANE_TRUSTED_HOME" || \
  fail "runtime pane did not receive trusted HOME"
 echo "$pane_environment" | grep -qF "$PANE_STALE_PATH" && fail "runtime pane received stale PATH"
@@ -290,6 +353,7 @@ write_interaction_generated() {
  chmod 600 "$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 +416,12 @@ 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="$ROOT/native-absent"
@@ -381,7 +449,7 @@ echo "$output" | grep -qF 'code=unknown-key' || fail "interaction did not use sh
 : > "$TMUX_CALLS"
 HOME_INTERACTION_POLICY="$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"
@@ -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())
@@ -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
@@ -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/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,
Author	SHA1	Message	Date
be-coder-06andcoder-mos1	e56f5947ac	test(fleet): bound stale heartbeat observation (#1043 ) ci/woodpecker/pr/ci Pipeline was successful Details	2026-08-06 02:20:34 -05:00
be-coder-06andcoder-mos1	d52a3ecf25	test(fleet): make stale marker BusyBox-safe (#1043 )	2026-08-06 02:20:34 -05:00
be-coder-06andcoder-mos1	5fde2da592	test(fleet): carry identity regression in CI (#1043 )	2026-08-06 02:20:34 -05:00
be-coder-06andcoder-mos1	821eb80b91	fix(fleet): propagate roster git identity (#1043 )	2026-08-06 02:20:05 -05:00