feat: Waveform seekbar, MilkDrop visualizer, EQ bars, in-app browser, and UX improvements (v1.3.0)

- PlayerBar redesigned: canvas waveform seekbar (500 bars, blue→mauve gradient + glow) replaces thin slider; new flex layout; queue toggle moved to content header (consistent with sidebar pattern)
- MilkDrop visualizer in Ambient Stage via Butterchurn; hidden audio analysis, preset shuffle, smooth blend transitions
- Tracklist: animated EQ bars for playing track, play icon when paused, align-items: center fix
- Artist pages: Last.fm + Wikipedia open in native Tauri WebviewWindow (in-app browser)
- Hero/Discover deduplication: single fetch of 20 random albums split between sections
- Update checker: runs every 10 minutes during runtime; version shown without v-prefix
- Settings version: now read from package.json instead of hardcoded
- Help page: new Random Mix section, updated Playback + Library sections, improved accordion styling
- Bump version to 1.3.0

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/components/Hero.tsx

@@ -42,7 +42,11 @@ function HeroBg({ url }: { url: string }) {
   );
 }
 
-export default function Hero() {
+interface HeroProps {
+  albums?: SubsonicAlbum[];
+}
+
+export default function Hero({ albums: albumsProp }: HeroProps = {}) {
   const { t } = useTranslation();
   const navigate = useNavigate();
   const [albums, setAlbums] = useState<SubsonicAlbum[]>([]);
@@ -50,8 +54,9 @@ export default function Hero() {
   const timerRef = useRef<ReturnType<typeof setInterval> | null>(null);
 
   useEffect(() => {
+    if (albumsProp?.length) { setAlbums(albumsProp); return; }
     getRandomAlbums(8).then(a => { if (a.length) setAlbums(a); }).catch(() => {});
-  }, []);
+  }, [albumsProp]);
 
   // Start / restart auto-advance timer
   const startTimer = useCallback((len: number) => {