docs: project docs, scripts, deployment configs, and evidence

docs/evidence/ops/2026-03-28/quality/COVERAGE_REMEDIATION_20260328-122517.md

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+# 2026-03-28 Q-004 Coverage Remediation Pass 17
+
+## Scope
+
+- Continue strict `Q-004` closure work after Pass 16.
+- Fully close the remaining dashboard hotspot in:
+  - `frontend/admin/src/pages/admin/DashboardPage/DashboardPage.tsx`
+- Re-verify closure through targeted dashboard tests and full frontend validation.
+
+## Changes
+
+### Frontend
+
+- Added dedicated dashboard coverage in:
+  - `frontend/admin/src/pages/admin/DashboardPage/DashboardPage.test.tsx`
+- Newly covered behavior includes:
+  - initial loading state
+  - successful stats rendering
+  - retriable error state
+  - retry recovery path
+  - empty payload fallback when the stats payload is missing
+- Test setup intentionally isolates shell dependencies and service responses so the page state machine is exercised deterministically.
+
+### Backend
+
+- No backend code changes were required in this pass.
+
+## Verified Commands
+
+```powershell
+cd D:\project\frontend\admin
+npm.cmd run test:run -- src/pages/admin/DashboardPage/DashboardPage.test.tsx
+npm.cmd run lint
+npm.cmd run build
+npm.cmd run test:coverage
+```
+
+## Results
+
+### Frontend coverage
+
+- Overall:
+  - statements `91.66%`
+  - branches `78.26%`
+  - functions `87.86%`
+  - lines `91.82%`
+- Target area:
+  - `src/pages/admin/DashboardPage/DashboardPage.tsx`: statements `100%`, branches `100%`, functions `100%`, lines `100%`
+
+### Validation outcomes
+
+- Full frontend coverage run now completes with:
+  - `48` passing test files
+  - `218` passing tests
+- The required sequential frontend validation path passed:
+  - `test:run -- src/pages/admin/DashboardPage/DashboardPage.test.tsx`
+  - `lint`
+  - `build`
+  - `test:coverage`
+
+## Validation Notes
+
+- The successful frontend coverage run still emits one post-summary jsdom `AggregateError` network-noise line.
+  - It does not fail the command.
+  - It remains a real validation-hygiene issue and cannot be hidden.
+
+## Real Conclusion
+
+- `src/pages/admin/DashboardPage/DashboardPage.tsx` is no longer an open `Q-004` gap.
+- `Q-004` still cannot be honestly declared closed.
+- After this pass, the main remaining frontend gaps narrow further to:
+  - `src/components/feedback/PageState/PageState.tsx`
+  - additional lower-coverage shared/admin surfaces outside this pass
+  - the post-summary jsdom `AggregateError` coverage-noise hygiene issue