fix: NP overlay still shows stale song on auto-advance

Two fixes:
1. Remove snapshot read from openNowPlaying() — the MediaController snapshot
   can show the old song at the old index (both still valid entries in the
   queue), so the ID check does not detect staleness; after the onTrackChanged
   fix S.qIdx is always authoritative so there is no need to read the snapshot
2. Call syncNowPlaying() explicitly in onTrackChanged so the NP overlay is
   refreshed immediately when the song changes while it is already open

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

src/player.js

@@ -3,7 +3,7 @@ import { esc, formatDur, toast } from './utils.js';
 import { api, streamUrl, coverUrl, downloadUrl, dispTitle, dispArtist, dispArtistParts, dispAlbum } from './api.js';
 // views.js/ui.js circular imports — safe (only used inside function bodies)
 import { loadRecommendations } from './views.js';
-import { updateLyricsHighlight, onNpSongChange } from './nowplaying.js';
+import { updateLyricsHighlight, onNpSongChange, syncNowPlaying } from './nowplaying.js';
 
 // ─── NATIVE BRIDGE DETECTION ───────────────────────────────────────────────
 // True when running inside the NovaSonic Android wrapper (NSBridge injected before loadUrl).
@@ -203,6 +203,7 @@ window.NSPlayer = {
       const s = S.queue[S.qIdx];
       if (!s) return;
       updatePlayerUI(s, true);
+      syncNowPlaying();
       onNpSongChange(s.id);
       if (indexChanged) renderQueue();
       // Schedule scrobble — fires after 12s of uninterrupted playback.