Add the FavoritesState fields for the Artists port: the grid toolbar
(artists-search / artists-view-mode grid|sidepanel / artists-group-enabled),
the search-filtered + A-Z-grouped models (artists-visible / artists-grouped
via the new FavArtistSection struct / artists-alpha / artists-shown), and
the sidepanel selection state (selected-artist-id/name, loading/error,
selected-artist-sections as DiscoverSections + total). Add the FavoritesActions
callbacks (search-artists, artists-set-view, artists-set-group, artists-shuffle,
select-artist). Controller + view follow.
cc
vicrodh
210808fd39