feat(now-playing): redesign page as info dashboard (#266)

Replace the flat Now Playing page with a two-column dashboard: hero
(cover, metadata, badges, Last.fm stats + love button, release-age
tagline), and a grid of themed cards (Album tracklist with sliding
window, most-played-by-artist, credits, about-the-artist with Last.fm
bio fallback, compact discography contact-sheet with expand, upcoming
tours via Bandsintown). Adds lastfmGetTrackInfo + lastfmGetArtistStats
for global listener counts + userplaycount, plus Last.fm love/unlove
wired to the new hero button. Module-level TTL caches per entity keep
same-artist track switches instant. Artist-image guard filters the
well-known Last.fm no-image placeholder so the card collapses cleanly
when no real image exists.

Co-authored-by: Psychotoxical <dev@psysonic.app>
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/locales/es.ts

@@ -94,6 +94,30 @@ export const esTranslation = {
     showLess: 'Mostrar menos',
     genreInfo: 'Género',
     trackInfo: 'Información de la Pista',
+    topSongs: 'Más reproducidas de este artista',
+    topSongsCredit: 'Temas principales de {{name}}',
+    trackPosition: 'Pista {{pos}}',
+    playsCount_one: '{{count}} reproducción',
+    playsCount_other: '{{count}} reproducciones',
+    releasedYearsAgo_one: 'hace {{count}} año',
+    releasedYearsAgo_other: 'hace {{count}} años',
+    discography: 'Discografía',
+    lastfmStats: 'Estadísticas de Last.fm',
+    thisTrack: 'Este tema',
+    thisArtist: 'Este artista',
+    listeners: 'oyentes',
+    scrobbles: 'scrobbles',
+    yourScrobbles: 'por ti',
+    listenersN: '{{n}} oyentes',
+    scrobblesN: '{{n}} scrobbles',
+    playsByYouN: 'reproducido {{n}}× por ti',
+    openTrackOnLastfm: 'Tema en Last.fm',
+    openArtistOnLastfm: 'Artista en Last.fm',
+    rgTrackTooltip: 'ReplayGain (pista)',
+    rgAlbumTooltip: 'ReplayGain (álbum)',
+    rgAutoTooltip: 'ReplayGain (auto)',
+    showMoreTracks: 'Mostrar {{count}} más',
+    showLessTracks: 'Mostrar menos',
   },
   contextMenu: {
     playNow: 'Reproducir Ahora',