Phase 1: Add enhanced database fields and sorting
- Add 9 new fields to media_items table (language, edition, page_count, goodreads_id, openlibrary_id, google_books_id, copyright_year, genre, subjects)
- Add indexes for new fields (language, genre, page_count, copyright_year, series_order, date_published)
- Add ListMediaItemsSorted SQL query for dynamic sorting
- Update ListMediaItems handler to process sort parameter
- Support 16 sorting options (title, author, created_at, date_published, copyright_year, page_count, genre, series)
- Add /api/media-items/filtered endpoint for advanced filtering
- Register new filtered endpoint in routes
john-okeefe
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