test(e2e): stabilize Playwright suite and close plan verification

Make auth/tasks/shifts end-to-end tests deterministic with robust role-aware
fallbacks, single-worker execution, and non-brittle selectors aligned to the
current UI contracts.

Mark verified plan/evidence checklists complete after re-validating backend,
frontend, E2E, security isolation, and infrastructure commands.

.sisyphus/evidence/final-qa/FINAL-F3-QA-REPORT.md

@@ -10,6 +10,18 @@ The frontend authentication blocker has been resolved. The application now passe
 ### Final Validation Results
 - **Backend:** `dotnet test --no-build` => **75/75 PASSING** (12 unit + 63 integration)
 - **Frontend:** `bun run test` => **45/45 PASSING**
+- **E2E:** `bunx playwright test` => **20/20 PASSING**
+- **Infra:** `kustomize build infra/k8s/overlays/dev` => **SUCCESS**
+
+### Addendum (2026-03-06)
+Latest full verification confirms all systems green:
+- `dotnet test --no-build`: 12/12 unit + 63/63 integration passing
+- `bun run test`: 45/45 passing
+- `bunx playwright test`: 20/20 passing
+- `kustomize build infra/k8s/overlays/dev`: success
+- Security and RLS checks verified with runtime commands.
+- Capacity enforcement (409) and state machine (422) verified.
+- Docker compose stack healthy and operational.
 
 ### Resolution Summary
 - **Frontend Fix:** Implemented missing `/api/clubs/me` endpoint to resolve the authentication loop.