# 2026-03-28 Q-004 Coverage Remediation Pass 13

## Scope

- Continue strict `Q-004` closure work after Pass 12.
- Fully close the remaining deep-branch hotspot in `frontend/admin/src/pages/admin/ProfileSecurityPage/ProfileSecurityPage.tsx` before selecting the next gap.
- Re-verify closure through targeted page tests plus full frontend validation.

## Changes

### Frontend

- Extended page coverage in:
  - `frontend/admin/src/pages/admin/ProfileSecurityPage/ProfileSecurityPage.behavior.test.tsx`
- Newly covered behavior includes:
  - initial security-data load failure handling
  - OAuth callback success and error handling
  - password-update submission
  - bound social-account unbind flow and post-action refresh
  - no-user guard behavior for protected actions
  - existing TOTP, avatar, and device behavior remained green under the rewritten page-level tests

### 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/ProfileSecurityPage
npm.cmd run lint
npm.cmd run build
npm.cmd run test:coverage
```

## Results

### Frontend coverage

- Overall:
  - statements `85.89%`
  - branches `74.91%`
  - functions `81.87%`
  - lines `86.71%`
- Target areas:
  - `src/pages/admin/ProfileSecurityPage/ProfileSecurityPage.tsx`: statements `90.35%`, branches `75.51%`, functions `92.45%`, lines `90.13%`
  - `src/lib/http/client.ts`: statements `100%`, branches `92.30%`, functions `100%`, lines `100%`
  - `src/lib/http/csrf.ts`: statements `100%`, branches `88.46%`, functions `100%`, lines `100%`

## Validation Notes

- Frontend full coverage now completes with `42` passing test files and `199` passing tests.
- The required sequential frontend validation path passed:
  - `test:run -- src/pages/admin/ProfileSecurityPage`
  - `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

- `src/pages/admin/ProfileSecurityPage/ProfileSecurityPage.tsx` is no longer an open `Q-004` gap.
- `Q-004` still cannot be honestly declared closed.
- With `client.ts` and `ProfileSecurityPage` closed, the next highest-value frontend gaps shift to:
  - auth recovery pages that still have `0%` coverage, especially `src/pages/auth/ForgotPasswordPage/ForgotPasswordPage.tsx`
  - `src/pages/auth/ResetPasswordPage/ResetPasswordPage.tsx`
  - the post-summary jsdom `AggregateError` coverage-noise hygiene issue
