Merge branch 'main' into exp/orbit (pre-PR sync)

Conflicts resolved in:
- src/pages/SearchResults.tsx
- src/pages/AdvancedSearch.tsx

Both pages were rewritten on main (PR #303) to use the shared
<SongRow> component with click-to-enqueueAndPlay semantics. Orbit's
playSong helper that branched on orbit-active is no longer needed
at the page level — instead, orbit awareness moved INTO SongRow and
SongCard themselves: in an active orbit session both buttons collapse
into addTrackToOrbit (suggest for guests, host-enqueue for the host)
so we don't ship a queue replacement to every guest.

Also kept main's IntersectionObserver-based pagination on both pages.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/locales/en.ts

@@ -22,6 +22,7 @@ export const enTranslation = {
     cancelDownload: 'Cancel download',
     offlineLibrary: 'Offline Library',
     genres: 'Genres',
+    tracks: 'Tracks',
     playlists: 'Playlists',
     smartPlaylists: 'Smart Playlists',
     mostPlayed: 'Most Played',
@@ -42,6 +43,7 @@ export const enTranslation = {
     mostPlayed: 'Most Played',
     recentlyPlayed: 'Recently Played',
     discover: 'Discover',
+    discoverSongs: 'Discover Songs',
     loadMore: 'Load More',
     discoverMore: 'Discover More',
     discoverArtists: 'Discover Artists',
@@ -380,6 +382,20 @@ export const enTranslation = {
     offlineQueuing: 'Queuing {{count}} album(s) for offline…',
     offlineFailed: 'Failed to add {{name}} offline',
   },
+  tracks: {
+    title: 'Tracks',
+    subtitle: 'Browse. Search. Discover.',
+    heroEyebrow: 'Track of the moment',
+    heroReroll: 'Pick another',
+    playSong: 'Play',
+    enqueueSong: 'Add to queue',
+    railRandom: 'Random Pick',
+    browseTitle: 'Browse all tracks',
+    browseUnsupported: "This server doesn't list the whole library at once. Use the search above to find specific tracks.",
+    searchPlaceholder: 'Find a track by title, artist or album…',
+    count_one: '{{count}} track',
+    count_other: '{{count}} tracks',
+  },
   artists: {
     title: 'Artists',
     search: 'Search…',