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stack/docs/scratchpads/1146-ci-queue-purpose.md
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2026-08-10 20:54:09 +00:00

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# #1146 — CI Queue Guard Purpose Semantics
## Objective
Make the pre-push queue guard wait for queued/running CI without requiring the previous remote head to have successful CI. Preserve fail-closed merge readiness.
## Scope
- `packages/mosaic/framework/tools/git/ci-queue-wait.sh`
- focused queue-guard regression tests
- design and scratchpad documentation
- local framework activation required before the fixed guard can authorize this branch's push
## Plan
1. Freeze purpose-specific behavior in failing process-level tests.
2. Implement the smallest state-dispatch change.
3. Run focused shell tests and repository quality gates.
4. Obtain independent review and remediate findings.
5. Install the reviewed framework source locally, run the mandatory pre-push queue guard, and push.
6. Open a PR against `next`, verify terminal-green CI, and close #1146 after merge.
## Budget
- ASSUMPTION: no explicit token cap was provided.
- Working estimate: 12K tokens.
- Scope reduction: change only final-state dispatch and focused tests; do not redesign provider adapters.
## Progress
- Confirmed source and installed guards are byte-identical.
- Reproduced `terminal-failure` blocking `--purpose push`.
- Root cause: final-state dispatch requires terminal success for both push and merge.
- Design approved: push is queue-clear on valid non-pending states; merge remains fail-closed.
## Tests
- RED confirmed before implementation: the focused tri-state harness reported push `terminal-failure` and `no-status` as `ASSERTED_NOT_READY`.
- GREEN: `bash packages/mosaic/framework/tools/git/test-ci-queue-wait-tristate.sh` — all outcome classes passed.
- GREEN: `bash packages/mosaic/framework/tools/git/test-ci-queue-wait-github-checks.sh` — 6/6 purpose-aware cases passed.
- GREEN: `bash -n` passed for the changed guard and both focused harnesses.
- GREEN: `pnpm preflight`, `pnpm typecheck`, and `pnpm lint` passed.
- `pnpm test` ran 45/46 workspace test tasks successfully, but the pre-existing Gateway `cross-user-isolation.test.ts` failed during cleanup with PostgreSQL error `28P01` (local `mosaic` password authentication failure). The changed Mosaic framework test task passed within that run.
- GREEN: focused queue and merge shell regressions passed after the wrapper change.
- GREEN: isolated Mosaic Vitest run passed (81 files, 1,514 tests).
- The normal parallel Mosaic Vitest run has an environment-sensitive pre-existing failure in `install-ordering-guard.spec.ts`: the real activation probe changes between two calls while other suites run concurrently. Running the same spec alone and the complete Vitest suite with one fork passes.
- The framework shell suite's pre-existing `version_coupling_unittest.py` also fails locally because the newly installed `mosaic` is now on PATH despite the test injecting a nonexistent PATH; CI's clean image does not have this global CLI. All changed queue/merge harnesses pass.
- GREEN: `pnpm format:check` passed.
- Note: an additional ad hoc Prettier command was not applicable to shell files because Prettier has no shell parser; the repository-wide format check passed using its configured file globs.
## Review
- Independent Codex review of the six-file diff: approved, confidence 0.84, zero blockers/should-fix/suggestions.
- Review confirmed push queue-clear behavior, merge fail-closed behavior, and `--require-status` coverage.
## Risks and Blockers
- Canonical framework activation completed with `MOSAIC_SYNC_ONLY=1 MOSAIC_INSTALL_MODE=keep MOSAIC_SKIP_SKILLS_SYNC=1 bash packages/mosaic/framework/install.sh`.
- Source and installed queue guards are byte-identical (`cmp` and SHA-256 parity passed).
- The installed pre-push guard now passes for the not-yet-remote feature branch with `queue clear`.
- The required merge wrapper then exposed a second bootstrap defect: `pr-merge.sh` hardcoded `main`, contradicting the documented PR-based `next` integration lane. Tracked as #1149 and fixed in the same delivery branch with a regression fixture targeting `next`.
- Activation emitted the existing manifest-safety warning that six `fleet/run/*.hb*` operator files were touched then restored; no data loss was observed, but this remains a pre-existing framework-manifest defect to report separately.
- The first activation attempt timed out after 600 seconds while copying the 113K-file operator snapshot; the bounded 1,800-second retry completed successfully. It left a partial durable snapshot from the interrupted attempt in the normal backup directory; the completed snapshot is the newer `pre-update-20260810T195317Z` entry.
- Full baseline test completion is blocked by the unrelated local PostgreSQL authentication/cleanup failure described above; CI has its own disposable PostgreSQL service.
- Existing `.mosaic/orchestrator/*` working-tree changes are unrelated and must remain unstaged.