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/i18n.ts

@@ -394,6 +394,7 @@ const enTranslation = {
     aboutBuiltWith: 'Built with Tauri · React · TypeScript · Rust/rodio',
     aboutAiCredit: 'Developed with the support of Claude Code by Anthropic',
     aboutContributorsLabel: 'Contributors',
+    aboutSpecialThanksLabel: 'Special Thanks',
     changelog: 'Changelog',
     showChangelogOnUpdate: "Show 'What's New' on update",
     showChangelogOnUpdateDesc: "Automatically show what's new when a new version is launched for the first time.",
@@ -551,6 +552,7 @@ const enTranslation = {
     crossfade: 'Crossfade',
     infiniteQueue: 'Infinite Queue',
     autoAdded: '— Added automatically —',
+    radioAdded: '— Radio —',
     hide: 'Hide',
     close: 'Close',
     nextTracks: 'Next Tracks',
@@ -1066,6 +1068,7 @@ const deTranslation = {
     aboutBuiltWith: 'Gebaut mit Tauri · React · TypeScript · Rust/rodio',
     aboutAiCredit: 'Mit freundlicher Unterstützung von Claude Code by Anthropic',
     aboutContributorsLabel: 'Mitwirkende',
+    aboutSpecialThanksLabel: 'Besonderer Dank',
     changelog: 'Changelog',
     showChangelogOnUpdate: "'Was ist neu' bei Update anzeigen",
     showChangelogOnUpdateDesc: 'Zeigt automatisch die Neuerungen an, wenn eine neue Version zum ersten Mal gestartet wird.',
@@ -1223,6 +1226,7 @@ const deTranslation = {
     crossfade: 'Crossfade',
     infiniteQueue: 'Endlose Warteschlange',
     autoAdded: '— Automatisch hinzugefügt —',
+    radioAdded: '— Radio —',
     hide: 'Verbergen',
     close: 'Schließen',
     nextTracks: 'Nächste Titel',
@@ -1738,6 +1742,7 @@ const frTranslation = {
     aboutBuiltWith: 'Construit avec Tauri · React · TypeScript · Rust/rodio',
     aboutAiCredit: 'Développé avec le soutien de Claude Code par Anthropic',
     aboutContributorsLabel: 'Contributeurs',
+    aboutSpecialThanksLabel: 'Remerciements spéciaux',
     changelog: 'Journal des modifications',
     showChangelogOnUpdate: "Afficher 'Quoi de neuf' lors des mises à jour",
     showChangelogOnUpdateDesc: 'Affiche automatiquement les nouveautés au premier lancement d\'une nouvelle version.',
@@ -1895,6 +1900,7 @@ const frTranslation = {
     crossfade: 'Fondu',
     infiniteQueue: 'File infinie',
     autoAdded: '— Ajouté automatiquement —',
+    radioAdded: '— Radio —',
     hide: 'Masquer',
     close: 'Fermer',
     nextTracks: 'Pistes suivantes',
@@ -2410,6 +2416,7 @@ const nlTranslation = {
     aboutBuiltWith: 'Gebouwd met Tauri · React · TypeScript · Rust/rodio',
     aboutAiCredit: 'Ontwikkeld met ondersteuning van Claude Code door Anthropic',
     aboutContributorsLabel: 'Bijdragers',
+    aboutSpecialThanksLabel: 'Speciale dank',
     changelog: 'Wijzigingslog',
     showChangelogOnUpdate: "'Wat is nieuw' tonen bij update",
     showChangelogOnUpdateDesc: 'Toont automatisch de nieuwigheden bij de eerste start van een nieuwe versie.',
@@ -2567,6 +2574,7 @@ const nlTranslation = {
     crossfade: 'Overgang',
     infiniteQueue: 'Oneindige wachtrij',
     autoAdded: '— Automatisch toegevoegd —',
+    radioAdded: '— Radio —',
     hide: 'Verbergen',
     close: 'Sluiten',
     nextTracks: 'Volgende nummers',
@@ -3082,6 +3090,7 @@ const zhTranslation = {
     aboutBuiltWith: '使用 Tauri · React · TypeScript · Rust/rodio 构建',
     aboutAiCredit: '在 Anthropic 的 Claude Code 支持下开发',
     aboutContributorsLabel: '贡献者',
+    aboutSpecialThanksLabel: '特别感谢',
     changelog: '更新日志',
     showChangelogOnUpdate: '更新时显示"新功能"',
     showChangelogOnUpdateDesc: '新版本首次启动时自动显示更新内容。',
@@ -3239,6 +3248,7 @@ const zhTranslation = {
     crossfade: '交叉淡入淡出',
     infiniteQueue: '无限队列',
     autoAdded: '— 自动添加 —',
+    radioAdded: '— 收音机 —',
     hide: '隐藏',
     close: '关闭',
     nextTracks: '即将播放',