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/fr.ts

@@ -93,6 +93,30 @@ export const frTranslation = {
     showLess: 'Réduire',
     genreInfo: 'Genre',
     trackInfo: 'Infos piste',
+    topSongs: 'Le plus joué de cet artiste',
+    topSongsCredit: 'Top titres de {{name}}',
+    trackPosition: 'Piste {{pos}}',
+    playsCount_one: '{{count}} écoute',
+    playsCount_other: '{{count}} écoutes',
+    releasedYearsAgo_one: 'il y a {{count}} an',
+    releasedYearsAgo_other: 'il y a {{count}} ans',
+    discography: 'Discographie',
+    lastfmStats: 'Statistiques Last.fm',
+    thisTrack: 'Ce titre',
+    thisArtist: 'Cet artiste',
+    listeners: 'auditeurs',
+    scrobbles: 'scrobbles',
+    yourScrobbles: 'par vous',
+    listenersN: '{{n}} auditeurs',
+    scrobblesN: '{{n}} scrobbles',
+    playsByYouN: 'écouté {{n}}× par vous',
+    openTrackOnLastfm: 'Titre sur Last.fm',
+    openArtistOnLastfm: 'Artiste sur Last.fm',
+    rgTrackTooltip: 'ReplayGain (piste)',
+    rgAlbumTooltip: 'ReplayGain (album)',
+    rgAutoTooltip: 'ReplayGain (auto)',
+    showMoreTracks: 'Afficher {{count}} de plus',
+    showLessTracks: 'Réduire',
   },
   contextMenu: {
     playNow: 'Lire maintenant',