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/es.ts

@@ -22,6 +22,7 @@ export const esTranslation = {
     cancelDownload: 'Cancelar descarga',
     offlineLibrary: 'Biblioteca Offline',
     genres: 'Géneros',
+    tracks: 'Canciones',
     playlists: 'Listas de Reproducción',
     mostPlayed: 'Más Reproducidos',
     radio: 'Radio por Internet',
@@ -41,6 +42,7 @@ export const esTranslation = {
     mostPlayed: 'Más Reproducidos',
     recentlyPlayed: 'Reproducidos Recientemente',
     discover: 'Descubrir',
+    discoverSongs: 'Descubrir canciones',
     loadMore: 'Cargar Más',
     discoverMore: 'Descubrir Más',
     discoverArtists: 'Descubrir Artistas',
@@ -380,6 +382,20 @@ export const esTranslation = {
     offlineFailed: 'Error al agregar {{name}} offline',
     addToPlaylist: 'Agregar a Lista de Reproducción',
   },
+  tracks: {
+    title: 'Canciones',
+    subtitle: 'Explorar. Buscar. Descubrir.',
+    heroEyebrow: 'Canción del momento',
+    heroReroll: 'Elegir otra',
+    playSong: 'Reproducir',
+    enqueueSong: 'Añadir a la cola',
+    railRandom: 'Selección aleatoria',
+    browseTitle: 'Explorar todas las canciones',
+    browseUnsupported: 'Este servidor no lista toda la biblioteca de una vez. Usa la búsqueda de arriba para encontrar canciones concretas.',
+    searchPlaceholder: 'Busca una canción por título, artista o álbum…',
+    count_one: '{{count}} canción',
+    count_other: '{{count}} canciones',
+  },
   artists: {
     title: 'Artistas',
     search: 'Buscar…',