[avenger] Fix missing work-queue projection diagnostic guidance #71036

Failure and fix

The first failed job in CI run 39721692927, Validate workflow container pins, failed make test-guidance: four assertions reported missing evidence/remedy coverage for projection_unavailable, projection_receipt_pending, and projection_write_ambiguous.

Document these codes in .github/aw/debug-playbook.md, including native acknowledgements, Issue/summary receipts, reconciliation before retry, and preservation of uncertain locks. Condense adjacent guidance to retain the enforced 2,800-word budget (2,797 words). No runtime code or protected workflow files changed.

Validation

• make test-guidance: all 24 tests pass on the final change.
• make agent-report-progress: passed for this documentation-only change; CLI build and schema freshness passed, and impacted Go tests were skipped because no Go files changed.
• git diff --check: passed; exactly one file committed; worktree clean.
• make fmt and make lint were not run: the failing signal and change are documentation-only. No full unit-suite pass is claimed.

Limits and steering

git fetch origin main failed certificate verification, so the requested latest-main merge could not be completed. No certificate checks were bypassed. The fix is based on the provided checkout at 6fdf20f.

Other failed jobs listed in the run (CLI Completion & Other integration, Workflow Actions & Containers integration, and workflow markdown/lock drift) remain outside this first-failure repair; this PR does not claim the entire CI run is repaired.

Steering issue #71034 had no comments when checked. The unavailable report_progress tool was reported; publication uses the configured safe-output PR transport instead.

To route changes like this to a review issue instead of blocking, configure protected-files: fallback-to-issue in your workflow configuration.

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• expires on Oct 23, 2026, 8:46 PM UTC-08:00