feat: v1.29.0 — Radio fast-start, seek fix, OGG, error toasts, contributors

Incorporates PRs #38 (nisarg-78), #42 #43 #44 (JulianNymark) with fixes:

Audio / Playback
- Artist Radio starts immediately from fast getTopSongs (local library);
  getSimilarSongs2 (Last.fm) enriches queue in background — no more wait
- Fix seek audio glitch: EqualPowerFadeIn only resets to zero-gain on
  seeks to track start (<100 ms); all other seeks resume at unity gain
- OGG/Vorbis container support via symphonia-format-ogg (PR #42)
- Human-readable audio error messages in SizedDecoder (PR #44)
- Audio playback errors shown as themed toast notifications (PR #43)

Queue / Radio
- Infinite Queue: proactive load of 5 tracks (was 25) when ≤2 remain
- Radio: proactive reload at ≤2 remaining tracks, independent of
  Infinite Queue setting — radio no longer stops at last track
- Fix: clicking Start Radio multiple times no longer stacks duplicates
- Fix: Start Radio on artist keeps current song playing
- Manual tracks always appear before Radio, Radio before Auto-added
- Queue separators: "— Radio —" and "— Auto —" dividers
- Fix: radio proactive load now works even when songs lack artistId
  (uses currentRadioArtistId module var as fallback)

UI / UX
- Click synced lyrics lines to seek (PR #38)
- Volume scroll wheel on volume slider (PR #38)
- Lyrics: active / completed / upcoming visual states (PR #38)
- Shared toast utility (src/utils/toast.ts) replaces inline toast fn
- Auto-updater: relaunch_after_update Rust command exits first to
  release single-instance lock before spawning new process

About / Credits
- nisarg-78 and JulianNymark added to contributors (since v1.29.0)
- netherguy4 added as Special Thanks for feature ideas and feedback
- i18n: aboutSpecialThanksLabel in all 5 languages

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

src/components/PlayerBar.tsx

@@ -64,6 +64,12 @@ export default function PlayerBar() {
     setVolume(parseFloat(e.target.value));
   }, [setVolume]);
 
+  const handleVolumeWheel = useCallback((e: React.WheelEvent<HTMLDivElement>) => {
+    e.preventDefault();
+    const delta = e.deltaY > 0 ? -0.05 : 0.05;
+    setVolume(Math.max(0, Math.min(1, volume + delta)));
+  }, [volume, setVolume]);
+
   const volumeStyle = {
     background: `linear-gradient(to right, var(--volume-accent, var(--accent)) ${volume * 100}%, var(--ctp-surface2) ${volume * 100}%)`,
   };
@@ -203,7 +209,7 @@ export default function PlayerBar() {
         >
           {volume === 0 ? <VolumeX size={16} /> : <Volume2 size={16} />}
         </button>
-        <div className="player-volume-slider-wrap">
+        <div className="player-volume-slider-wrap" onWheel={handleVolumeWheel}>
           {showVolPct && (
             <span className="player-volume-pct" style={{ left: `${volume * 100}%` }}>
               {Math.round(volume * 100)}%