- Update Config struct to replace EbookHandler with MediaHandler, SearchHandler, MatchingHandler
- Add CollectionHandler to Config struct
- Update RegisterRoutes to call new registration functions
- Create registerCollectionsRoutes for 15 collection endpoints
- Create registerSearchRoutes for search endpoints (uses MediaHandler.SearchMediaItems, MatchingHandler.QueryBooks)
- Create registerMatchingRoutes for 8 matching/linking endpoints
- Update registerMediaRoutes to use cfg.MediaHandler (adds 24 media endpoints)
- Create registerProgressRoutes for 3 universal progress endpoints
All 57 routes preserved and properly registered with correct handlers.
No functionality lost, all endpoints work identically.
This is Phase 5 of the ebook.go refactoring plan.
