Wires the new Albums tab in LocalLibraryView via the metadata-grouped
V2 commands. Default tab order in LibraryPreferences now includes
'albums' between 'folders' and 'artists'; existing users get the new
slot via sanitizeLibraryPreferences's backfill of missing default tabs.
LocalAlbum interface gains the optional source_folders field exposed by
v2_library_get_albums_metadata. fetchAlbumTracks branches on the album
record's source_folders presence: metadata rows fetch via
v2_library_get_album_tracks_metadata, folder rows keep using
v2_library_get_album_tracks. No separate viewMode plumbing is needed
because the discriminator travels on the row itself.
The Albums tab renders through the same VirtualizedAlbumList component
as Folders (single ungrouped group, no controls in this initial pass),
loaded lazily on first visit via loadMetadataAlbums. Cache invalidates
on every loadLibraryData, post-scan, and library-clear so a re-scan
surfaces fresh metadata grouping.
cc
vicrodh
863e5dc86f