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/de.ts

@@ -93,6 +93,30 @@ export const deTranslation = {
     showLess: 'Weniger anzeigen',
     genreInfo: 'Genre',
     trackInfo: 'Track-Info',
+    topSongs: 'Meistgespielt von diesem Künstler',
+    topSongsCredit: 'Top-Tracks von {{name}}',
+    trackPosition: 'Track {{pos}}',
+    playsCount_one: '{{count}} Wiedergabe',
+    playsCount_other: '{{count}} Wiedergaben',
+    releasedYearsAgo_one: 'vor {{count}} Jahr',
+    releasedYearsAgo_other: 'vor {{count}} Jahren',
+    discography: 'Diskografie',
+    lastfmStats: 'Last.fm-Statistik',
+    thisTrack: 'Dieser Titel',
+    thisArtist: 'Dieser Künstler',
+    listeners: 'Hörer',
+    scrobbles: 'Scrobbles',
+    yourScrobbles: 'von dir',
+    listenersN: '{{n}} Hörer',
+    scrobblesN: '{{n}} Scrobbles',
+    playsByYouN: '{{n}}× von dir gespielt',
+    openTrackOnLastfm: 'Track auf Last.fm',
+    openArtistOnLastfm: 'Künstler auf Last.fm',
+    rgTrackTooltip: 'ReplayGain (Track)',
+    rgAlbumTooltip: 'ReplayGain (Album)',
+    rgAutoTooltip: 'ReplayGain (Auto)',
+    showMoreTracks: '{{count}} weitere anzeigen',
+    showLessTracks: 'Weniger anzeigen',
   },
   contextMenu: {
     playNow: 'Direkt abspielen',