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

docs/evidence/ops/2026-03-28/quality/COVERAGE_REMEDIATION_20260328-124756.md

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+# 2026-03-28 Q-004 Coverage Remediation Pass 19
+
+## Scope
+
+- Continue strict `Q-004` closure work after Pass 18.
+- Fully close the remaining admin shell hotspot in:
+  - `frontend/admin/src/layouts/AdminLayout/AdminLayout.tsx`
+- Re-verify closure through targeted layout tests and full frontend validation.
+
+## Changes
+
+### Frontend
+
+- Reworked layout coverage in:
+  - `frontend/admin/src/layouts/AdminLayout/AdminLayout.test.tsx`
+- Newly covered behavior includes:
+  - loading state while the session restores
+  - admin desktop navigation flow
+  - breadcrumb navigation
+  - desktop collapse state
+  - mobile menu / drawer flow
+  - dropdown profile / security / logout actions
+  - admin vs non-admin menu selection
+  - avatar, nickname, username, and default-user fallbacks
+  - explicit `children` rendering over the router outlet
+
+### Backend
+
+- No backend code changes were required in this pass.
+
+## Verified Commands
+
+```powershell
+cd D:\project\frontend\admin
+npm.cmd run test:run -- src/layouts/AdminLayout/AdminLayout.test.tsx
+npm.cmd run lint
+npm.cmd run build
+npm.cmd run test:coverage
+```
+
+## Results
+
+### Frontend coverage
+
+- Overall:
+  - statements `92.06%`
+  - branches `79.29%`
+  - functions `89.09%`
+  - lines `92.22%`
+- Target area:
+  - `src/layouts/AdminLayout/AdminLayout.tsx`: statements `100%`, branches `100%`, functions `100%`, lines `100%`
+
+### Validation outcomes
+
+- Full frontend coverage run now completes with:
+  - `49` passing test files
+  - `224` passing tests
+- The required sequential frontend validation path passed:
+  - `test:run -- src/layouts/AdminLayout/AdminLayout.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/layouts/AdminLayout/AdminLayout.tsx` is no longer an open `Q-004` gap.
+- `Q-004` still cannot be honestly declared closed.
+- After this pass, the remaining higher-value frontend gaps narrow further to:
+  - `src/lib/storage/token-storage.ts`
+  - `src/lib/errors/AppError.ts`
+  - `src/pages/admin/ImportExportPage/ImportExportPage.tsx`
+  - `src/pages/NotFoundPage/NotFoundPage.tsx`
+  - the post-summary jsdom `AggregateError` coverage-noise hygiene issue