feat: v1.34.1 — fullscreen lyrics overlay, FsArt crossfade, lyrics toggle, contributor updates

- FullscreenPlayer: synced lyrics overlay (5-line rail, mask fade, click-to-seek)
- FullscreenPlayer: FsArt crossfade component with onLoad pattern, 300px art, next-track pre-fetch
- FullscreenPlayer: MicVocal lyrics toggle button next to heart (persisted in authStore)
- FullscreenPlayer: idle system — only close button auto-hides, cluster+seekbar always visible
- LyricsPane: refactored to use shared useLyrics hook (no double-fetch with FS overlay)
- authStore: showFullscreenLyrics field (default true)
- i18n: fsLyricsToggle key added to all 7 locales; ru2.ts removed (merged into ru.ts)
- Settings: Contributors updated (nisrael, cucadmuh, kilyabin); logout moved to Server tab as btn-danger
- theme.css: btn-danger style added

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

src/locales/zh.ts

@@ -341,7 +341,6 @@ export const zhTranslation = {
     languageZh: '中文',
     languageNb: '挪威',
     languageRu: '俄语',
-    languageRu2: '俄语 2',
     font: '字体',
     theme: '主题',
     appearance: '外观',
@@ -422,6 +421,8 @@ export const zhTranslation = {
     discordRichPresenceDesc: '在 Discord 个人资料上显示当前播放的曲目。需要 Discord 处于运行状态。',
     nowPlayingEnabled: '在实时窗口中显示',
     nowPlayingEnabledDesc: '将当前播放的曲目广播到服务器的实时听众视图。禁用以停止发送播放数据。',
+    lyricsServerFirst: '优先使用服务器歌词',
+    lyricsServerFirstDesc: '先查询服务器提供的歌词（内嵌标签、sidecar 文件），再查询 LRCLIB。禁用则优先使用 LRCLIB。',
     downloadsTitle: 'ZIP 导出与归档',
     downloadsFolderDesc: '将专辑以 ZIP 文件下载到电脑时的目标文件夹。',
     downloadsDefault: '默认下载文件夹',
@@ -685,8 +686,11 @@ export const zhTranslation = {
     volume: '音量',
     toggleQueue: '切换队列',
     lyrics: '歌词',
+    fsLyricsToggle: '全屏歌词',
     lyricsLoading: '正在加载歌词…',
     lyricsNotFound: '未找到此曲目的歌词',
+    lyricsSourceServer: '来源：服务器',
+    lyricsSourceLrclib: '来源：LRCLIB',
   },
   songInfo: {
     title: '歌曲信息',