- Removed duplicate 'Download Full Album' context menu entry
- Refactored on_download_all_albums_from_playlist to reduce C901 complexity
- Extracted helper methods: _extract_album_ids_from_tracks, _load_albums_with_rate_limiting, _validate_session, _handle_album_load_error, _queue_loaded_albums
- All make check errors and warnings now resolved
- Resolved conflict in dialog_settings.py (kept both cb_use_primary_album_artist and cb_mark_explicit checkboxes)
- Fixed code quality issues found by make check:
* Removed duplicate on_download_album_from_track function (F811)
* Updated isinstance calls to use X | Y syntax instead of (X, Y) (UP038)
* Fixed unused loop variable album_stub (B007)
* Applied automatic formatting fixes (black, prettier, trailing whitespace)
- Only remaining issue is C901 complexity warning in on_download_all_albums_from_playlist (expected per maintainer feedback)
Winman486