- Integrated "Recommend Film" button and Rating UI into Jellyfin web interface via MutationObserver. - Implemented full library sync (metadata + user state) in MovieNightSyncService. - Updated MovieNightBackendClient to support sync, recommendations, ratings, and viewed status. - Added proxy endpoints to MovieNightController for frontend-backend communication. - Refined sync logic to handle large libraries and ensured .NET 9.0 compatibility. Co-authored-by: devitq <118541411+devitq@users.noreply.github.com>