docs(runbook): add relay PR evidence template and summary draft

context/runbook.md

@@ -110,6 +110,31 @@ Recommended starting posture:
 3. Full rollback path: revert relay hardening commit set and redeploy.
 4. Record incident + mitigation outcome in `memory-bank/change-log.md` and `memory-bank/pitfalls.md`.
 
+### PR Evidence Snapshot Template (copy into PR description)
+
+Use this template when shipping relay policy updates:
+
+```
+Relay policy smoke evidence (non-prod)
+
+- [ ] 401/403 deterministic auth failures -> no retries observed
+- [ ] 400/404 deterministic validation failures -> no retries observed
+- [ ] 429/503 transient failures -> bounded retries/backoff observed
+- [ ] timeout path -> bounded failure path, no retry storm
+- [ ] structured redacted logs emitted (`relay_request_retrying` / `relay_request_failed`)
+- [ ] duplicate endpoint-layer error logging suppressed for already-logged relay failures
+
+Runtime knobs used during validation:
+- RELAY_TIMEOUT_MS=
+- RELAY_RETRY_MAX=
+- RELAY_RETRY_BASE_DELAY_MS=
+- RELAY_RETRY_MAX_DELAY_MS=
+
+Rollback readiness:
+- [ ] quick mitigation validated: RELAY_RETRY_MAX=0
+- [ ] commit-revert path identified and documented
+```
+
 ## Definition of Ready for AI-Assisted Tasks
 
 - Clear acceptance criteria

memory-bank/TASK22239-pr-summary.md

@@ -0,0 +1,36 @@
+# TASK22239 PR Summary Draft
+
+## Scope summary
+
+- Added relay-policy governance and rollout controls so timeout/retry/logging changes are treated as operationally sensitive changes.
+- Added a copy/paste PR evidence template for non-prod smoke outcomes, runtime knobs used, and rollback readiness.
+
+## Files changed
+
+- `context/runbook.md`
+- `context/integration-map.md`
+- `memory-bank/change-log.md` (CL-032)
+- `memory-bank/decisions.md` (D-003)
+- `memory-bank/patterns.md` (P-004)
+- `.gitignore` (context tracking enabled)
+
+## Risk notes
+
+- **Auth/Data:** no runtime auth or data-path behavior changes in this slice.
+- **i18n/a11y:** no user-facing route/content behavior changes.
+- **Operational:** process-only hardening; intended to reduce risk in future relay policy updates.
+
+## Validation evidence
+
+- Documentation consistency reviewed across:
+    - `context/runbook.md`
+    - `context/integration-map.md`
+    - `memory-bank/change-log.md`
+    - `memory-bank/decisions.md`
+    - `memory-bank/patterns.md`
+
+## Rollback plan
+
+1. Revert commit(s) from `TASK22239-relay-governance-rollout`.
+2. If needed, restore previous `.gitignore` behavior for `context/` tracking.
+3. Confirm branch clean state and re-run PR checks.