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/styles/components.css

@@ -1953,7 +1953,7 @@
 .lyrics-line {
   font-size: 14px;
   font-weight: 400;
-  color: var(--text-muted);
+  color: var(--text-secondary);
   text-align: center;
   padding: 5px 8px;
   border-radius: 6px;
@@ -1962,10 +1962,18 @@
   cursor: default;
 }
 
+.lyrics-line.completed {
+  color: var(--text-muted);
+}
+
 .lyrics-line.active {
   color: var(--accent);
 }
 
+.lyrics-line:hover:not(.active) {
+  color: var(--text-secondary);
+}
+
 .lyrics-plain {
   padding: 4px 0 16px;
 }

src/styles/layout.css

@@ -693,7 +693,7 @@
 
 /* Star + Last.fm heart — visually separated from track title */
 .player-star-btn {
-  margin-left: var(--space-3);
+  margin: var(--space-1);
 }
 
 .player-btn-primary {