# 2026-03-28 Q-004 Coverage Remediation Pass 26

## Scope

- Re-verify the last open `Q-004` hygiene blocker after Pass 25.
- Confirm the `frontend/admin` `Q-004` closure track is now honestly closable.
- Re-check the previously unstable `router.tsx` full-suite coverage result in the same full validation run.

## Changes

### Frontend

- No additional frontend code changes were required in this pass.
- This pass is a strict re-validation of the previously landed frontend fixes that removed the real remaining blockers.

### Backend

- No backend code changes were required in this pass.

## Verified Commands

```powershell
cd D:\project\frontend\admin
npm.cmd run lint
npm.cmd run build
npm.cmd run test:coverage
```

## Results

### Frontend coverage

- Overall:
  - statements `93.98%`
  - branches `82.29%`
  - functions `91.37%`
  - lines `94.15%`
- Key re-check:
  - `src/app/router.tsx`: statements `100%`, branches `100%`, functions `100%`, lines `100%`

### Validation outcomes

- `lint` passed.
- `build` passed.
- Full frontend coverage passed with:
  - `54` passing test files
  - `248` passing tests
- The latest successful `test:coverage` run no longer prints the previously recurring post-summary jsdom `AggregateError` network-noise lines.
- The short-lived full-suite `router.tsx` coverage regression did not reproduce in the latest run.
- A separate npm warning still prints after command completion:
  - `Unknown user config "//git@github.com/"`
  - this is external environment noise from npm user config, not a project-generated frontend failure

## Real Conclusion

- All previously identified frontend hotspots in this `Q-004` closure track remain closed and re-verified.
- The last real validation-hygiene blocker is now closed.
- The `frontend/admin` `Q-004` closure track can now be honestly declared closed.