- Implemented `useManualChallenge`, `useChallengePoll`, and `useManualChallengeMutations` hooks for managing manual DNS challenges.
- Created tests for the `useManualChallenge` hooks to ensure correct fetching and mutation behavior.
- Added `ManualDNSChallenge` component for displaying challenge details and actions.
- Developed end-to-end tests for the Manual DNS Provider feature, covering provider selection, challenge UI, and accessibility compliance.
- Included error handling tests for verification failures and network errors.
- Add PRAGMA quick_check on startup with warning log if corrupted
- Add corruption sentinel helpers for structured error detection
- Add backup retention (keep last 7, auto-cleanup after daily backup)
- Add GET /api/v1/health/db endpoint for orchestrator health checks
Prevents silent data loss and enables proactive corruption detection.
