Backend changes: - Update import paths: bookmann/internal → bookhoard/internal - Rename struct fields: BookmannUUID → BookhoardUUID - Update handler function names: mapContentIdToBookmannUUID → mapContentIdToBookhoardUUID - Update HTTP response headers: X-Bookmann-* → X-Bookhoard-* - Update service and middleware references - Update main.go imports and references This is part 2 of the project rename to Bookhoard.
- Add book matching service for intelligent book deduplication - Add collection service for collection management - Add test files for book matching and collections