feat: v1.26.0 — Bulk Select, Song Info, Favorite Button, Recently Played

### Added
- Favorite/Star button in player bar (requested by @halfkey)
- Bulk multi-select for album tracklist and playlist detail (add to playlist, remove from playlist)
- Song Info modal via right-click context menu (metadata: format, bitrate, sample rate, bit depth, channels, file size, path, replay gain)
- Recently Played section on Home page
- "Show activity in Now Playing" opt-in toggle in Settings → Behavior

### Fixed
- Queue cover art not updating on track change (useCachedUrl/CachedImage reset on cacheKey change)
- FullscreenPlayer background flickering (FsBg preloads image before layer transition)
- Playlist card delete confirmation visual (size expansion + pulse animation)
- Gruvbox Light Soft: back button and badge invisible against light background

### Changed
- buildStreamUrl: removed unused suffix parameter

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/pages/AlbumDetail.tsx

@@ -112,9 +112,15 @@ const handleEnqueueAll = () => {
    };
 
    const handlePlaySong = (song: SubsonicSong) => {
-     const track = songToTrack(song);
-     if (!track.genre && album?.album.genre) track.genre = album.album.genre;
-     playTrack(track, [track]);
+     if (!album) return;
+     const albumGenre = album.album.genre;
+     const tracks = album.songs.map(s => {
+       const t = songToTrack(s);
+       if (!t.genre && albumGenre) t.genre = albumGenre;
+       return t;
+     });
+     const track = tracks.find(t => t.id === song.id) || songToTrack(song);
+     playTrack(track, tracks);
    };
 
   const handleRate = async (songId: string, rating: number) => {