feat(subsonic): per-server music folder filter and sidebar picker

Apply musicFolderId across Subsonic requests, bump a filter version so library views reload, and add a fixed-position sidebar dropdown (with capped height when there are many folders).

src/locales/de.ts

@@ -23,6 +23,9 @@ export const deTranslation = {
     genres: 'Genres',
     playlists: 'Playlists',
     radio: 'Internetradio',
+    libraryScope: 'Bibliotheksumfang',
+    libraryScopeHint: 'Gesamten Server-Katalog oder nur einen Medienordner durchsuchen.',
+    allLibraries: 'Alle Bibliotheken',
   },
   home: {
     hero: 'Featured',

src/locales/en.ts

@@ -23,6 +23,9 @@ export const enTranslation = {
     genres: 'Genres',
     playlists: 'Playlists',
     radio: 'Internet Radio',
+    libraryScope: 'Library scope',
+    libraryScopeHint: 'Browse either your whole server catalog or a single media folder.',
+    allLibraries: 'All libraries',
   },
   home: {
     hero: 'Featured',

src/locales/fr.ts

@@ -23,6 +23,9 @@ export const frTranslation = {
     genres: 'Genres',
     playlists: 'Playlists',
     radio: 'Radio Internet',
+    libraryScope: 'Portée de la bibliothèque',
+    libraryScopeHint: 'Parcourir tout le catalogue du serveur ou un seul dossier média.',
+    allLibraries: 'Toutes les bibliothèques',
   },
   home: {
     hero: 'En vedette',

src/locales/nb.ts

@@ -23,6 +23,9 @@ export const nbTranslation = {
     genres: 'Sjangere',
     playlists: 'Spillelister',
     radio: 'Internettradio',
+    libraryScope: 'Biblioteksomfang',
+    libraryScopeHint: 'Vis hele serverkatalogen eller én mediemappe.',
+    allLibraries: 'Alle biblioteker',
   },
   home: {
     hero: 'Utvalgt',

src/locales/nl.ts

@@ -23,6 +23,9 @@ export const nlTranslation = {
     genres: 'Genres',
     playlists: 'Playlists',
     radio: 'Internetradio',
+    libraryScope: 'Bibliotheekbereik',
+    libraryScopeHint: 'Doorzoek de hele servercatalogus of één mediabibliotheek.',
+    allLibraries: 'Alle bibliotheken',
   },
   home: {
     hero: 'Uitgelicht',

src/locales/ru.ts

@@ -24,6 +24,9 @@ export const ruTranslation = {
     genres: 'Жанры',
     playlists: 'Плейлисты',
     radio: 'Онлайн-радио',
+    libraryScope: 'Область медиатеки',
+    libraryScopeHint: 'Показывать весь каталог сервера или только одну медиапапку.',
+    allLibraries: 'Все библиотеки',
   },
   home: {
     hero: 'Подборка',

src/locales/zh.ts

@@ -23,6 +23,9 @@ export const zhTranslation = {
     genres: '流派',
     playlists: '播放列表',
     radio: '网络电台',
+    libraryScope: '资料库范围',
+    libraryScopeHint: '浏览整个服务器目录或仅单个媒体文件夹。',
+    allLibraries: '所有资料库',
   },
   home: {
     hero: '精选',