# 2026-03-28 Q-004 Coverage Remediation Pass 10

## Scope

- Continue strict `Q-004` closure work after Pass 9.
- Fully close the remaining `RegisterPage` frontend page cluster before moving to the next task.
- Re-verify closure through targeted tests plus full frontend validation.

## Changes

### Frontend

- Expanded register-page behavior coverage in:
  - `frontend/admin/src/pages/auth/RegisterPage/RegisterPage.test.tsx`
- Newly covered behavior includes:
  - fallback to default capabilities when capability loading fails
  - footer rendering when password-reset capability is enabled
  - sms-code send success, validation swallow path, and backend-failure path
  - sms-backed registration payload submission
  - submit blocking when sms-backed registration is missing a valid phone-code path
  - registration failure handling
  - inactive-account success summary with and without activation email
  - first-admin bootstrap warning rendering

### 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/auth/RegisterPage/RegisterPage.test.tsx
npm.cmd run lint
npm.cmd run build
npm.cmd run test:coverage
```

## Results

### Frontend coverage

- Overall:
  - statements `78.91%`
  - branches `66.06%`
  - functions `77.07%`
  - lines `79.73%`
- Target areas:
  - `src/pages/auth/RegisterPage/RegisterPage.tsx`: statements `93.42%`, branches `85.24%`, functions `87.5%`, lines `95.89%`
  - `src/pages/admin/ProfileSecurityPage/ProfileSecurityPage.tsx`: statements `70.17%`, branches `48.97%`
  - `src/lib/http/client.ts`: statements `52.17%`, branches `43.26%`
  - `src/lib/http/csrf.ts`: statements `25.71%`, branches `19.23%`

## Validation Notes

- Frontend full coverage now completes with `41` passing test files and `163` passing tests.
- The required sequential frontend validation path passed:
  - `lint`
  - `build`
  - `test:coverage`
- 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 should continue to be tracked honestly.

## Real Conclusion

- `RegisterPage` is no longer an open `Q-004` gap.
- `Q-004` still cannot be honestly declared closed.
- The remaining highest-value frontend gaps are now more concentrated in:
  - deeper remaining `ProfileSecurityPage` branches
  - `lib/http`
