Test file updates:
- Update import paths in test files: bookmann/internal → bookhoard/internal
- Update test helper functions and references
- Update test comments and documentation
This is part 6 of the project rename to Bookhoard.
- Add Kobo sync handler with markup, bookmark, analytics, and initialization endpoints
- Add Kobo integration tests and Bruno API test collection
- Move device approve/reject routes from public to protected routes
- Enhance test infrastructure with DATABASE_URL support and helper functions
- Fix device GetDevice handler nil pointer handling
- Clean up test reports and session files
john-okeefe