feat(lyrics): add Netease Cloud Music as opt-in fallback source

Netease is queried only when server and LRCLIB both return nothing,
preserving the existing lyrics chain completely. Off by default.

- Rust command `fetch_netease_lyrics` proxies Netease API (CORS bypass)
- `src/api/netease.ts` TypeScript wrapper via invoke
- `authStore.enableNeteaselyrics` toggle (default: false)
- `useLyrics`: Netease fires last in fallback chain when enabled
- Settings toggle in the Lyrics section
- `lyricsSourceNetease` label in LyricsPane
- i18n: all 7 languages (en, de, fr, nl, nb, ru, zh)

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

src/locales/de.ts

@@ -486,6 +486,8 @@ export const deTranslation = {
     nowPlayingEnabledDesc: 'Überträgt den aktuell gespielten Titel an die Livehörer-Ansicht des Servers. Deaktivieren, um keine Wiedergabedaten zu senden.',
     lyricsServerFirst: 'Server-Lyrics bevorzugen',
     lyricsServerFirstDesc: 'Server-seitige Lyrics (eingebettete Tags, Sidecar-Dateien) vor LRCLIB abfragen. Deaktivieren, um LRCLIB zuerst zu verwenden.',
+    enableNeteaselyrics: 'Netease Cloud Music Lyrics',
+    enableNeteaselyricsDesc: 'Netease Cloud Music als letzte Lyrics-Quelle verwenden, wenn Server und LRCLIB nichts liefern. Besonders gut für asiatische und internationale Musik.',
     downloadsTitle: 'ZIP-Export & Archivierung',
     downloadsFolderDesc: 'Zielverzeichnis für Alben, die du als ZIP-Datei auf deinen Computer herunterlädst.',
     downloadsDefault: 'Standard-Downloads-Ordner',
@@ -817,6 +819,7 @@ export const deTranslation = {
     lyricsNotFound: 'Keine Lyrics für diesen Titel gefunden',
     lyricsSourceServer: 'Quelle: Server',
     lyricsSourceLrclib: 'Quelle: LRCLIB',
+    lyricsSourceNetease: 'Quelle: Netease',
   },
   songInfo: {
     title: 'Song-Infos',

src/locales/en.ts

@@ -487,6 +487,8 @@ export const enTranslation = {
     nowPlayingEnabledDesc: 'Broadcast your currently playing track to the server\'s live listener view. Disable to stop sending playback data.',
     lyricsServerFirst: 'Prefer server lyrics',
     lyricsServerFirstDesc: 'Check server-provided lyrics (embedded tags, sidecar files) before querying LRCLIB. Disable to use LRCLIB first.',
+    enableNeteaselyrics: 'Netease Cloud Music lyrics',
+    enableNeteaselyricsDesc: 'Use Netease Cloud Music as a last-resort lyrics source when server and LRCLIB both return nothing. Best coverage for Asian and international music.',
     downloadsTitle: 'ZIP Export & Archiving',
     downloadsFolderDesc: 'Destination folder for albums you download as a ZIP file to your computer.',
     downloadsDefault: 'Default Downloads Folder',
@@ -818,6 +820,7 @@ export const enTranslation = {
     lyricsNotFound: 'No lyrics found for this track',
     lyricsSourceServer: 'Source: Server',
     lyricsSourceLrclib: 'Source: LRCLIB',
+    lyricsSourceNetease: 'Source: Netease',
   },
   songInfo: {
     title: 'Song Info',

src/locales/fr.ts

@@ -484,6 +484,8 @@ export const frTranslation = {
     nowPlayingEnabledDesc: 'Diffuse le titre en cours de lecture vers la vue des auditeurs en direct du serveur. Désactiver pour ne pas envoyer de données de lecture.',
     lyricsServerFirst: 'Préférer les paroles du serveur',
     lyricsServerFirstDesc: 'Consulter d\'abord les paroles fournies par le serveur (tags intégrés, fichiers sidecar) avant LRCLIB. Désactiver pour utiliser LRCLIB en priorité.',
+    enableNeteaselyrics: 'Paroles Netease Cloud Music',
+    enableNeteaselyricsDesc: 'Utiliser Netease Cloud Music en dernier recours lorsque le serveur et LRCLIB ne retournent rien. Meilleure couverture pour la musique asiatique et internationale.',
     downloadsTitle: 'Export ZIP & Archivage',
     downloadsFolderDesc: 'Dossier de destination pour les albums téléchargés en tant que fichier ZIP sur votre ordinateur.',
     downloadsDefault: 'Dossier de téléchargement par défaut',
@@ -815,6 +817,7 @@ export const frTranslation = {
     lyricsNotFound: 'Aucune parole trouvée pour ce titre',
     lyricsSourceServer: 'Source : Serveur',
     lyricsSourceLrclib: 'Source : LRCLIB',
+    lyricsSourceNetease: 'Source : Netease',
   },
   songInfo: {
     title: 'Infos du morceau',

src/locales/nb.ts

@@ -483,6 +483,8 @@ export const nbTranslation = {
     nowPlayingEnabledDesc: 'Send sporet som spilles av til tjenerens live-lyttervisning. Deaktiver for å stoppe sending av avspillingsdata.',
     lyricsServerFirst: 'Foretrekk server-sangtekst',
     lyricsServerFirstDesc: 'Sjekk tjenerlevererte sangtekster (innebygde tagger, sidecar-filer) før LRCLIB. Deaktiver for å bruke LRCLIB først.',
+    enableNeteaselyrics: 'Netease Cloud Music sangtekster',
+    enableNeteaselyricsDesc: 'Bruk Netease Cloud Music som siste utvei når server og LRCLIB ikke finner noe. Best dekning for asiatisk og internasjonal musikk.',
     downloadsTitle: 'ZIP Eksport & Arkivering',
 	downloadsFolderDesc: 'Målmappe for album du laster ned som en ZIP-fil til datamaskinen din.',												  
     downloadsDefault: 'Standard nedlastingsmappe',
@@ -814,6 +816,7 @@ export const nbTranslation = {
     lyricsNotFound: 'Ingen sangtekst funnet for dette sporet',
     lyricsSourceServer: 'Kilde: Server',
     lyricsSourceLrclib: 'Kilde: LRCLIB',
+    lyricsSourceNetease: 'Kilde: Netease',
   },
   songInfo: {
     title: 'Sanginfo',

src/locales/nl.ts

@@ -484,6 +484,8 @@ export const nlTranslation = {
     nowPlayingEnabledDesc: 'Stuurt het huidige nummer naar de live-luisteraarsweergave van de server. Uitschakelen om geen afspeelgegevens te verzenden.',
     lyricsServerFirst: 'Server-songtekst voorrang geven',
     lyricsServerFirstDesc: 'Controleer eerst door de server geleverde songteksten (ingebedde tags, sidecar-bestanden) vóór LRCLIB. Uitschakelen om LRCLIB eerst te gebruiken.',
+    enableNeteaselyrics: 'Netease Cloud Music songteksten',
+    enableNeteaselyricsDesc: 'Gebruik Netease Cloud Music als laatste bron wanneer server en LRCLIB niets opleveren. Beste dekking voor Aziatische en internationale muziek.',
     downloadsTitle: 'ZIP-export & Archivering',
     downloadsFolderDesc: 'Doelmap voor albums die je als ZIP-bestand naar je computer downloadt.',
     downloadsDefault: 'Standaard downloadmap',
@@ -815,6 +817,7 @@ export const nlTranslation = {
     lyricsNotFound: 'Geen songtekst gevonden voor dit nummer',
     lyricsSourceServer: 'Bron: Server',
     lyricsSourceLrclib: 'Bron: LRCLIB',
+    lyricsSourceNetease: 'Bron: Netease',
   },
   songInfo: {
     title: 'Nummerinfo',

src/locales/ru.ts

@@ -507,6 +507,8 @@ export const ruTranslation = {
       'Отправлять на сервер, что вы сейчас слушаете. Отключите, чтобы не делиться этим.',
     lyricsServerFirst: 'Предпочитать серверные тексты',
     lyricsServerFirstDesc: 'Проверять тексты песен, предоставленные сервером (встроенные теги, sidecar-файлы) перед запросом LRCLIB. Отключите, чтобы использовать LRCLIB сначала.',
+    enableNeteaselyrics: 'Тексты Netease Cloud Music',
+    enableNeteaselyricsDesc: 'Использовать Netease Cloud Music как последний источник текстов, когда сервер и LRCLIB не находят ничего. Лучшее покрытие для азиатской и международной музыки.',
     downloadsTitle: 'Экспорт ZIP и архивы',
     downloadsFolderDesc: 'Куда сохранять альбомы в ZIP архиве на диск.',
     downloadsDefault: 'Папка «Загрузки» по умолчанию',
@@ -874,6 +876,7 @@ export const ruTranslation = {
     lyrics: 'Текст',
     lyricsLoading: 'Загрузка текста…',
     lyricsNotFound: 'Текст не найден',
+    lyricsSourceNetease: 'Источник: Netease',
   },
   songInfo: {
     title: 'О треке',

src/locales/zh.ts

@@ -480,6 +480,8 @@ export const zhTranslation = {
     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。',
+    enableNeteaselyrics: '网易云音乐歌词',
+    enableNeteaselyricsDesc: '当服务器和 LRCLIB 均无结果时，使用网易云音乐作为最终歌词来源。对亚洲及国际音乐覆盖最佳。',
     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',
@@ -811,6 +813,7 @@ export const zhTranslation = {
     lyricsNotFound: '未找到此曲目的歌词',
     lyricsSourceServer: '来源：服务器',
     lyricsSourceLrclib: '来源：LRCLIB',
+    lyricsSourceNetease: '来源：网易云',
   },
   songInfo: {
     title: '歌曲信息',