f24543f401
- Add sqlx with PostgreSQL support for database operations - Create DbService with artist/album upsert and listing methods - Add database schema (14 tables) in containers/init.sql - Add library controller (GET /api/library/artists, /albums, /stats) - Merge sync_artist + ingest into single POST /api/sync endpoint - Support configurable sync: download (bool), store (bool), album filter - Connect to database at startup with graceful fallback