merge: integrate origin/main into feat/improve-rating-ux

Resolve conflicts in RandomAlbums (keep mix rating filter with batch ZIP/offline
selection from upstream) and Settings (SeekbarPreview + mix filter constants).

src/utils/backup.ts

@@ -14,6 +14,7 @@ const BACKUP_KEYS = [
   'psysonic-eq',
   'psysonic_global_shortcuts',
   'psysonic-player',
+  'psysonic_home',
 ];
 
 export async function exportBackup(): Promise<string | null> {