feat(settings): add backup and restore for settings, history and library

Add a Backup & Restore page that exports app settings, download history, liked tracks, wishlist, playlists (with cover images) and favorite artists into a single JSON file, and restores them on another device. Settings restore preserves device-specific storage location (SAF tree URI, download dir). Includes EN strings and ID translations.

lib/l10n/app_localizations.dart

@@ -4993,6 +4993,174 @@ abstract class AppLocalizations {
   /// **'Buy the developer a coffee'**
   String get settingsDonateSubtitle;
 
+  /// Settings menu item - backup and restore page
+  ///
+  /// In en, this message translates to:
+  /// **'Backup & Restore'**
+  String get settingsBackup;
+
+  /// Subtitle for backup and restore settings item
+  ///
+  /// In en, this message translates to:
+  /// **'Move your library, history and settings to a new device'**
+  String get settingsBackupSubtitle;
+
+  /// App bar title for the backup and restore page
+  ///
+  /// In en, this message translates to:
+  /// **'Backup & Restore'**
+  String get backupTitle;
+
+  /// Section title for the export/backup card
+  ///
+  /// In en, this message translates to:
+  /// **'Create backup'**
+  String get backupExportSectionTitle;
+
+  /// Description of what a backup contains
+  ///
+  /// In en, this message translates to:
+  /// **'Save your settings, download history, liked tracks, wishlist, favorite artists and playlists into a single file you can keep or move to another phone.'**
+  String get backupExportSectionDescription;
+
+  /// Button to create and share a backup file
+  ///
+  /// In en, this message translates to:
+  /// **'Create backup file'**
+  String get backupExportButton;
+
+  /// Section title for the import/restore card
+  ///
+  /// In en, this message translates to:
+  /// **'Restore backup'**
+  String get backupImportSectionTitle;
+
+  /// Description for the restore action
+  ///
+  /// In en, this message translates to:
+  /// **'Pick a backup file to restore your data. This replaces the current settings, history and library on this device.'**
+  String get backupImportSectionDescription;
+
+  /// Button to pick a backup file to restore
+  ///
+  /// In en, this message translates to:
+  /// **'Choose backup file'**
+  String get backupImportButton;
+
+  /// Progress text while a backup is being created
+  ///
+  /// In en, this message translates to:
+  /// **'Creating backup...'**
+  String get backupCreating;
+
+  /// Snackbar after a backup file is created
+  ///
+  /// In en, this message translates to:
+  /// **'Backup created'**
+  String get backupCreated;
+
+  /// Snackbar when backup creation fails
+  ///
+  /// In en, this message translates to:
+  /// **'Failed to create backup'**
+  String get backupCreateFailed;
+
+  /// Snackbar when there is no data to back up
+  ///
+  /// In en, this message translates to:
+  /// **'There is nothing to back up yet'**
+  String get backupEmpty;
+
+  /// Confirmation dialog title before restoring a backup
+  ///
+  /// In en, this message translates to:
+  /// **'Restore this backup?'**
+  String get backupRestoreConfirmTitle;
+
+  /// Confirmation dialog message before restoring a backup
+  ///
+  /// In en, this message translates to:
+  /// **'This will replace your current settings, download history, liked tracks, wishlist and playlists with the contents of the backup. This cannot be undone.'**
+  String get backupRestoreConfirmMessage;
+
+  /// Confirm button to proceed with restore
+  ///
+  /// In en, this message translates to:
+  /// **'Restore'**
+  String get backupRestoreConfirmButton;
+
+  /// Progress text while restoring a backup
+  ///
+  /// In en, this message translates to:
+  /// **'Restoring backup...'**
+  String get backupRestoring;
+
+  /// Snackbar after a successful restore
+  ///
+  /// In en, this message translates to:
+  /// **'Backup restored successfully'**
+  String get backupRestored;
+
+  /// Snackbar when restore fails
+  ///
+  /// In en, this message translates to:
+  /// **'Failed to restore backup'**
+  String get backupRestoreFailed;
+
+  /// Snackbar when the chosen file is not a valid backup
+  ///
+  /// In en, this message translates to:
+  /// **'This file is not a valid SpotiFLAC backup'**
+  String get backupInvalidFile;
+
+  /// Hint shown after restoring that an app restart is recommended
+  ///
+  /// In en, this message translates to:
+  /// **'Restart the app to make sure every change is applied.'**
+  String get backupRestoreRestartHint;
+
+  /// Header above the list summarizing what the backup contains
+  ///
+  /// In en, this message translates to:
+  /// **'Backup contents'**
+  String get backupContentsTitle;
+
+  /// Backup contents row label for settings
+  ///
+  /// In en, this message translates to:
+  /// **'App settings'**
+  String get backupContentsSettings;
+
+  /// Backup contents row for history count
+  ///
+  /// In en, this message translates to:
+  /// **'{count} history {count, plural, =1{item} other{items}}'**
+  String backupContentsHistory(int count);
+
+  /// Backup contents row for liked tracks count
+  ///
+  /// In en, this message translates to:
+  /// **'{count} liked {count, plural, =1{track} other{tracks}}'**
+  String backupContentsLiked(int count);
+
+  /// Backup contents row for wishlist tracks count
+  ///
+  /// In en, this message translates to:
+  /// **'{count} wishlist {count, plural, =1{track} other{tracks}}'**
+  String backupContentsWishlist(int count);
+
+  /// Backup contents row for playlist count
+  ///
+  /// In en, this message translates to:
+  /// **'{count, plural, =1{1 playlist} other{{count} playlists}}'**
+  String backupContentsPlaylists(int count);
+
+  /// Backup contents row for favorite artists count
+  ///
+  /// In en, this message translates to:
+  /// **'{count, plural, =1{1 favorite artist} other{{count} favorite artists}}'**
+  String backupContentsArtists(int count);
+
   /// Tooltip for the Love All button on album/playlist screens
   ///
   /// In en, this message translates to:

lib/l10n/app_localizations_ar.dart

@@ -2885,6 +2885,135 @@ class AppLocalizationsAr extends AppLocalizations {
   @override
   String get settingsDonateSubtitle => 'Buy the developer a coffee';
 
+  @override
+  String get settingsBackup => 'Backup & Restore';
+
+  @override
+  String get settingsBackupSubtitle =>
+      'Move your library, history and settings to a new device';
+
+  @override
+  String get backupTitle => 'Backup & Restore';
+
+  @override
+  String get backupExportSectionTitle => 'Create backup';
+
+  @override
+  String get backupExportSectionDescription =>
+      'Save your settings, download history, liked tracks, wishlist, favorite artists and playlists into a single file you can keep or move to another phone.';
+
+  @override
+  String get backupExportButton => 'Create backup file';
+
+  @override
+  String get backupImportSectionTitle => 'Restore backup';
+
+  @override
+  String get backupImportSectionDescription =>
+      'Pick a backup file to restore your data. This replaces the current settings, history and library on this device.';
+
+  @override
+  String get backupImportButton => 'Choose backup file';
+
+  @override
+  String get backupCreating => 'Creating backup...';
+
+  @override
+  String get backupCreated => 'Backup created';
+
+  @override
+  String get backupCreateFailed => 'Failed to create backup';
+
+  @override
+  String get backupEmpty => 'There is nothing to back up yet';
+
+  @override
+  String get backupRestoreConfirmTitle => 'Restore this backup?';
+
+  @override
+  String get backupRestoreConfirmMessage =>
+      'This will replace your current settings, download history, liked tracks, wishlist and playlists with the contents of the backup. This cannot be undone.';
+
+  @override
+  String get backupRestoreConfirmButton => 'Restore';
+
+  @override
+  String get backupRestoring => 'Restoring backup...';
+
+  @override
+  String get backupRestored => 'Backup restored successfully';
+
+  @override
+  String get backupRestoreFailed => 'Failed to restore backup';
+
+  @override
+  String get backupInvalidFile => 'This file is not a valid SpotiFLAC backup';
+
+  @override
+  String get backupRestoreRestartHint =>
+      'Restart the app to make sure every change is applied.';
+
+  @override
+  String get backupContentsTitle => 'Backup contents';
+
+  @override
+  String get backupContentsSettings => 'App settings';
+
+  @override
+  String backupContentsHistory(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'items',
+      one: 'item',
+    );
+    return '$count history $_temp0';
+  }
+
+  @override
+  String backupContentsLiked(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return '$count liked $_temp0';
+  }
+
+  @override
+  String backupContentsWishlist(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return '$count wishlist $_temp0';
+  }
+
+  @override
+  String backupContentsPlaylists(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count playlists',
+      one: '1 playlist',
+    );
+    return '$_temp0';
+  }
+
+  @override
+  String backupContentsArtists(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count favorite artists',
+      one: '1 favorite artist',
+    );
+    return '$_temp0';
+  }
+
   @override
   String get tooltipLoveAll => 'Love All';
 

lib/l10n/app_localizations_de.dart

@@ -2922,6 +2922,135 @@ class AppLocalizationsDe extends AppLocalizations {
   @override
   String get settingsDonateSubtitle => 'Kaufe dem Entwickler einen Kaffee';
 
+  @override
+  String get settingsBackup => 'Backup & Restore';
+
+  @override
+  String get settingsBackupSubtitle =>
+      'Move your library, history and settings to a new device';
+
+  @override
+  String get backupTitle => 'Backup & Restore';
+
+  @override
+  String get backupExportSectionTitle => 'Create backup';
+
+  @override
+  String get backupExportSectionDescription =>
+      'Save your settings, download history, liked tracks, wishlist, favorite artists and playlists into a single file you can keep or move to another phone.';
+
+  @override
+  String get backupExportButton => 'Create backup file';
+
+  @override
+  String get backupImportSectionTitle => 'Restore backup';
+
+  @override
+  String get backupImportSectionDescription =>
+      'Pick a backup file to restore your data. This replaces the current settings, history and library on this device.';
+
+  @override
+  String get backupImportButton => 'Choose backup file';
+
+  @override
+  String get backupCreating => 'Creating backup...';
+
+  @override
+  String get backupCreated => 'Backup created';
+
+  @override
+  String get backupCreateFailed => 'Failed to create backup';
+
+  @override
+  String get backupEmpty => 'There is nothing to back up yet';
+
+  @override
+  String get backupRestoreConfirmTitle => 'Restore this backup?';
+
+  @override
+  String get backupRestoreConfirmMessage =>
+      'This will replace your current settings, download history, liked tracks, wishlist and playlists with the contents of the backup. This cannot be undone.';
+
+  @override
+  String get backupRestoreConfirmButton => 'Restore';
+
+  @override
+  String get backupRestoring => 'Restoring backup...';
+
+  @override
+  String get backupRestored => 'Backup restored successfully';
+
+  @override
+  String get backupRestoreFailed => 'Failed to restore backup';
+
+  @override
+  String get backupInvalidFile => 'This file is not a valid SpotiFLAC backup';
+
+  @override
+  String get backupRestoreRestartHint =>
+      'Restart the app to make sure every change is applied.';
+
+  @override
+  String get backupContentsTitle => 'Backup contents';
+
+  @override
+  String get backupContentsSettings => 'App settings';
+
+  @override
+  String backupContentsHistory(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'items',
+      one: 'item',
+    );
+    return '$count history $_temp0';
+  }
+
+  @override
+  String backupContentsLiked(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return '$count liked $_temp0';
+  }
+
+  @override
+  String backupContentsWishlist(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return '$count wishlist $_temp0';
+  }
+
+  @override
+  String backupContentsPlaylists(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count playlists',
+      one: '1 playlist',
+    );
+    return '$_temp0';
+  }
+
+  @override
+  String backupContentsArtists(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count favorite artists',
+      one: '1 favorite artist',
+    );
+    return '$_temp0';
+  }
+
   @override
   String get tooltipLoveAll => 'Alle lieben';
 

lib/l10n/app_localizations_en.dart

@@ -2885,6 +2885,135 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get settingsDonateSubtitle => 'Buy the developer a coffee';
 
+  @override
+  String get settingsBackup => 'Backup & Restore';
+
+  @override
+  String get settingsBackupSubtitle =>
+      'Move your library, history and settings to a new device';
+
+  @override
+  String get backupTitle => 'Backup & Restore';
+
+  @override
+  String get backupExportSectionTitle => 'Create backup';
+
+  @override
+  String get backupExportSectionDescription =>
+      'Save your settings, download history, liked tracks, wishlist, favorite artists and playlists into a single file you can keep or move to another phone.';
+
+  @override
+  String get backupExportButton => 'Create backup file';
+
+  @override
+  String get backupImportSectionTitle => 'Restore backup';
+
+  @override
+  String get backupImportSectionDescription =>
+      'Pick a backup file to restore your data. This replaces the current settings, history and library on this device.';
+
+  @override
+  String get backupImportButton => 'Choose backup file';
+
+  @override
+  String get backupCreating => 'Creating backup...';
+
+  @override
+  String get backupCreated => 'Backup created';
+
+  @override
+  String get backupCreateFailed => 'Failed to create backup';
+
+  @override
+  String get backupEmpty => 'There is nothing to back up yet';
+
+  @override
+  String get backupRestoreConfirmTitle => 'Restore this backup?';
+
+  @override
+  String get backupRestoreConfirmMessage =>
+      'This will replace your current settings, download history, liked tracks, wishlist and playlists with the contents of the backup. This cannot be undone.';
+
+  @override
+  String get backupRestoreConfirmButton => 'Restore';
+
+  @override
+  String get backupRestoring => 'Restoring backup...';
+
+  @override
+  String get backupRestored => 'Backup restored successfully';
+
+  @override
+  String get backupRestoreFailed => 'Failed to restore backup';
+
+  @override
+  String get backupInvalidFile => 'This file is not a valid SpotiFLAC backup';
+
+  @override
+  String get backupRestoreRestartHint =>
+      'Restart the app to make sure every change is applied.';
+
+  @override
+  String get backupContentsTitle => 'Backup contents';
+
+  @override
+  String get backupContentsSettings => 'App settings';
+
+  @override
+  String backupContentsHistory(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'items',
+      one: 'item',
+    );
+    return '$count history $_temp0';
+  }
+
+  @override
+  String backupContentsLiked(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return '$count liked $_temp0';
+  }
+
+  @override
+  String backupContentsWishlist(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return '$count wishlist $_temp0';
+  }
+
+  @override
+  String backupContentsPlaylists(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count playlists',
+      one: '1 playlist',
+    );
+    return '$_temp0';
+  }
+
+  @override
+  String backupContentsArtists(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count favorite artists',
+      one: '1 favorite artist',
+    );
+    return '$_temp0';
+  }
+
   @override
   String get tooltipLoveAll => 'Love All';
 

lib/l10n/app_localizations_es.dart

@@ -2885,6 +2885,135 @@ class AppLocalizationsEs extends AppLocalizations {
   @override
   String get settingsDonateSubtitle => 'Buy the developer a coffee';
 
+  @override
+  String get settingsBackup => 'Backup & Restore';
+
+  @override
+  String get settingsBackupSubtitle =>
+      'Move your library, history and settings to a new device';
+
+  @override
+  String get backupTitle => 'Backup & Restore';
+
+  @override
+  String get backupExportSectionTitle => 'Create backup';
+
+  @override
+  String get backupExportSectionDescription =>
+      'Save your settings, download history, liked tracks, wishlist, favorite artists and playlists into a single file you can keep or move to another phone.';
+
+  @override
+  String get backupExportButton => 'Create backup file';
+
+  @override
+  String get backupImportSectionTitle => 'Restore backup';
+
+  @override
+  String get backupImportSectionDescription =>
+      'Pick a backup file to restore your data. This replaces the current settings, history and library on this device.';
+
+  @override
+  String get backupImportButton => 'Choose backup file';
+
+  @override
+  String get backupCreating => 'Creating backup...';
+
+  @override
+  String get backupCreated => 'Backup created';
+
+  @override
+  String get backupCreateFailed => 'Failed to create backup';
+
+  @override
+  String get backupEmpty => 'There is nothing to back up yet';
+
+  @override
+  String get backupRestoreConfirmTitle => 'Restore this backup?';
+
+  @override
+  String get backupRestoreConfirmMessage =>
+      'This will replace your current settings, download history, liked tracks, wishlist and playlists with the contents of the backup. This cannot be undone.';
+
+  @override
+  String get backupRestoreConfirmButton => 'Restore';
+
+  @override
+  String get backupRestoring => 'Restoring backup...';
+
+  @override
+  String get backupRestored => 'Backup restored successfully';
+
+  @override
+  String get backupRestoreFailed => 'Failed to restore backup';
+
+  @override
+  String get backupInvalidFile => 'This file is not a valid SpotiFLAC backup';
+
+  @override
+  String get backupRestoreRestartHint =>
+      'Restart the app to make sure every change is applied.';
+
+  @override
+  String get backupContentsTitle => 'Backup contents';
+
+  @override
+  String get backupContentsSettings => 'App settings';
+
+  @override
+  String backupContentsHistory(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'items',
+      one: 'item',
+    );
+    return '$count history $_temp0';
+  }
+
+  @override
+  String backupContentsLiked(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return '$count liked $_temp0';
+  }
+
+  @override
+  String backupContentsWishlist(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return '$count wishlist $_temp0';
+  }
+
+  @override
+  String backupContentsPlaylists(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count playlists',
+      one: '1 playlist',
+    );
+    return '$_temp0';
+  }
+
+  @override
+  String backupContentsArtists(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count favorite artists',
+      one: '1 favorite artist',
+    );
+    return '$_temp0';
+  }
+
   @override
   String get tooltipLoveAll => 'Love All';
 

lib/l10n/app_localizations_fr.dart

@@ -2962,6 +2962,135 @@ class AppLocalizationsFr extends AppLocalizations {
   @override
   String get settingsDonateSubtitle => 'Offrez un café au développeur';
 
+  @override
+  String get settingsBackup => 'Backup & Restore';
+
+  @override
+  String get settingsBackupSubtitle =>
+      'Move your library, history and settings to a new device';
+
+  @override
+  String get backupTitle => 'Backup & Restore';
+
+  @override
+  String get backupExportSectionTitle => 'Create backup';
+
+  @override
+  String get backupExportSectionDescription =>
+      'Save your settings, download history, liked tracks, wishlist, favorite artists and playlists into a single file you can keep or move to another phone.';
+
+  @override
+  String get backupExportButton => 'Create backup file';
+
+  @override
+  String get backupImportSectionTitle => 'Restore backup';
+
+  @override
+  String get backupImportSectionDescription =>
+      'Pick a backup file to restore your data. This replaces the current settings, history and library on this device.';
+
+  @override
+  String get backupImportButton => 'Choose backup file';
+
+  @override
+  String get backupCreating => 'Creating backup...';
+
+  @override
+  String get backupCreated => 'Backup created';
+
+  @override
+  String get backupCreateFailed => 'Failed to create backup';
+
+  @override
+  String get backupEmpty => 'There is nothing to back up yet';
+
+  @override
+  String get backupRestoreConfirmTitle => 'Restore this backup?';
+
+  @override
+  String get backupRestoreConfirmMessage =>
+      'This will replace your current settings, download history, liked tracks, wishlist and playlists with the contents of the backup. This cannot be undone.';
+
+  @override
+  String get backupRestoreConfirmButton => 'Restore';
+
+  @override
+  String get backupRestoring => 'Restoring backup...';
+
+  @override
+  String get backupRestored => 'Backup restored successfully';
+
+  @override
+  String get backupRestoreFailed => 'Failed to restore backup';
+
+  @override
+  String get backupInvalidFile => 'This file is not a valid SpotiFLAC backup';
+
+  @override
+  String get backupRestoreRestartHint =>
+      'Restart the app to make sure every change is applied.';
+
+  @override
+  String get backupContentsTitle => 'Backup contents';
+
+  @override
+  String get backupContentsSettings => 'App settings';
+
+  @override
+  String backupContentsHistory(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'items',
+      one: 'item',
+    );
+    return '$count history $_temp0';
+  }
+
+  @override
+  String backupContentsLiked(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return '$count liked $_temp0';
+  }
+
+  @override
+  String backupContentsWishlist(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return '$count wishlist $_temp0';
+  }
+
+  @override
+  String backupContentsPlaylists(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count playlists',
+      one: '1 playlist',
+    );
+    return '$_temp0';
+  }
+
+  @override
+  String backupContentsArtists(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count favorite artists',
+      one: '1 favorite artist',
+    );
+    return '$_temp0';
+  }
+
   @override
   String get tooltipLoveAll => 'Tout aimer';
 

lib/l10n/app_localizations_hi.dart

@@ -2885,6 +2885,135 @@ class AppLocalizationsHi extends AppLocalizations {
   @override
   String get settingsDonateSubtitle => 'Buy the developer a coffee';
 
+  @override
+  String get settingsBackup => 'Backup & Restore';
+
+  @override
+  String get settingsBackupSubtitle =>
+      'Move your library, history and settings to a new device';
+
+  @override
+  String get backupTitle => 'Backup & Restore';
+
+  @override
+  String get backupExportSectionTitle => 'Create backup';
+
+  @override
+  String get backupExportSectionDescription =>
+      'Save your settings, download history, liked tracks, wishlist, favorite artists and playlists into a single file you can keep or move to another phone.';
+
+  @override
+  String get backupExportButton => 'Create backup file';
+
+  @override
+  String get backupImportSectionTitle => 'Restore backup';
+
+  @override
+  String get backupImportSectionDescription =>
+      'Pick a backup file to restore your data. This replaces the current settings, history and library on this device.';
+
+  @override
+  String get backupImportButton => 'Choose backup file';
+
+  @override
+  String get backupCreating => 'Creating backup...';
+
+  @override
+  String get backupCreated => 'Backup created';
+
+  @override
+  String get backupCreateFailed => 'Failed to create backup';
+
+  @override
+  String get backupEmpty => 'There is nothing to back up yet';
+
+  @override
+  String get backupRestoreConfirmTitle => 'Restore this backup?';
+
+  @override
+  String get backupRestoreConfirmMessage =>
+      'This will replace your current settings, download history, liked tracks, wishlist and playlists with the contents of the backup. This cannot be undone.';
+
+  @override
+  String get backupRestoreConfirmButton => 'Restore';
+
+  @override
+  String get backupRestoring => 'Restoring backup...';
+
+  @override
+  String get backupRestored => 'Backup restored successfully';
+
+  @override
+  String get backupRestoreFailed => 'Failed to restore backup';
+
+  @override
+  String get backupInvalidFile => 'This file is not a valid SpotiFLAC backup';
+
+  @override
+  String get backupRestoreRestartHint =>
+      'Restart the app to make sure every change is applied.';
+
+  @override
+  String get backupContentsTitle => 'Backup contents';
+
+  @override
+  String get backupContentsSettings => 'App settings';
+
+  @override
+  String backupContentsHistory(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'items',
+      one: 'item',
+    );
+    return '$count history $_temp0';
+  }
+
+  @override
+  String backupContentsLiked(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return '$count liked $_temp0';
+  }
+
+  @override
+  String backupContentsWishlist(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return '$count wishlist $_temp0';
+  }
+
+  @override
+  String backupContentsPlaylists(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count playlists',
+      one: '1 playlist',
+    );
+    return '$_temp0';
+  }
+
+  @override
+  String backupContentsArtists(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count favorite artists',
+      one: '1 favorite artist',
+    );
+    return '$_temp0';
+  }
+
   @override
   String get tooltipLoveAll => 'Love All';
 

lib/l10n/app_localizations_id.dart

@@ -2892,6 +2892,118 @@ class AppLocalizationsId extends AppLocalizations {
   @override
   String get settingsDonateSubtitle => 'Buy the developer a coffee';
 
+  @override
+  String get settingsBackup => 'Cadangkan & Pulihkan';
+
+  @override
+  String get settingsBackupSubtitle =>
+      'Pindahkan pustaka, riwayat, dan pengaturan ke perangkat baru';
+
+  @override
+  String get backupTitle => 'Cadangkan & Pulihkan';
+
+  @override
+  String get backupExportSectionTitle => 'Buat cadangan';
+
+  @override
+  String get backupExportSectionDescription =>
+      'Simpan pengaturan, riwayat unduhan, lagu disukai, wishlist, artis favorit, dan playlist ke dalam satu file yang bisa kamu simpan atau pindahkan ke ponsel lain.';
+
+  @override
+  String get backupExportButton => 'Buat file cadangan';
+
+  @override
+  String get backupImportSectionTitle => 'Pulihkan cadangan';
+
+  @override
+  String get backupImportSectionDescription =>
+      'Pilih file cadangan untuk memulihkan data. Ini akan menggantikan pengaturan, riwayat, dan pustaka di perangkat ini.';
+
+  @override
+  String get backupImportButton => 'Pilih file cadangan';
+
+  @override
+  String get backupCreating => 'Membuat cadangan...';
+
+  @override
+  String get backupCreated => 'Cadangan berhasil dibuat';
+
+  @override
+  String get backupCreateFailed => 'Gagal membuat cadangan';
+
+  @override
+  String get backupEmpty => 'Belum ada data untuk dicadangkan';
+
+  @override
+  String get backupRestoreConfirmTitle => 'Pulihkan cadangan ini?';
+
+  @override
+  String get backupRestoreConfirmMessage =>
+      'Ini akan menggantikan pengaturan, riwayat unduhan, lagu disukai, wishlist, dan playlist saat ini dengan isi cadangan. Tindakan ini tidak bisa dibatalkan.';
+
+  @override
+  String get backupRestoreConfirmButton => 'Pulihkan';
+
+  @override
+  String get backupRestoring => 'Memulihkan cadangan...';
+
+  @override
+  String get backupRestored => 'Cadangan berhasil dipulihkan';
+
+  @override
+  String get backupRestoreFailed => 'Gagal memulihkan cadangan';
+
+  @override
+  String get backupInvalidFile =>
+      'File ini bukan cadangan SpotiFLAC yang valid';
+
+  @override
+  String get backupRestoreRestartHint =>
+      'Mulai ulang aplikasi untuk memastikan semua perubahan diterapkan.';
+
+  @override
+  String get backupContentsTitle => 'Isi cadangan';
+
+  @override
+  String get backupContentsSettings => 'Pengaturan aplikasi';
+
+  @override
+  String backupContentsHistory(int count) {
+    return '$count item riwayat';
+  }
+
+  @override
+  String backupContentsLiked(int count) {
+    return '$count lagu disukai';
+  }
+
+  @override
+  String backupContentsWishlist(int count) {
+    return '$count lagu di wishlist';
+  }
+
+  @override
+  String backupContentsPlaylists(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count playlist',
+      one: '1 playlist',
+    );
+    return '$_temp0';
+  }
+
+  @override
+  String backupContentsArtists(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count artis favorit',
+      one: '1 artis favorit',
+    );
+    return '$_temp0';
+  }
+
   @override
   String get tooltipLoveAll => 'Love All';
 

lib/l10n/app_localizations_ja.dart

@@ -2873,6 +2873,135 @@ class AppLocalizationsJa extends AppLocalizations {
   @override
   String get settingsDonateSubtitle => 'Buy the developer a coffee';
 
+  @override
+  String get settingsBackup => 'Backup & Restore';
+
+  @override
+  String get settingsBackupSubtitle =>
+      'Move your library, history and settings to a new device';
+
+  @override
+  String get backupTitle => 'Backup & Restore';
+
+  @override
+  String get backupExportSectionTitle => 'Create backup';
+
+  @override
+  String get backupExportSectionDescription =>
+      'Save your settings, download history, liked tracks, wishlist, favorite artists and playlists into a single file you can keep or move to another phone.';
+
+  @override
+  String get backupExportButton => 'Create backup file';
+
+  @override
+  String get backupImportSectionTitle => 'Restore backup';
+
+  @override
+  String get backupImportSectionDescription =>
+      'Pick a backup file to restore your data. This replaces the current settings, history and library on this device.';
+
+  @override
+  String get backupImportButton => 'Choose backup file';
+
+  @override
+  String get backupCreating => 'Creating backup...';
+
+  @override
+  String get backupCreated => 'Backup created';
+
+  @override
+  String get backupCreateFailed => 'Failed to create backup';
+
+  @override
+  String get backupEmpty => 'There is nothing to back up yet';
+
+  @override
+  String get backupRestoreConfirmTitle => 'Restore this backup?';
+
+  @override
+  String get backupRestoreConfirmMessage =>
+      'This will replace your current settings, download history, liked tracks, wishlist and playlists with the contents of the backup. This cannot be undone.';
+
+  @override
+  String get backupRestoreConfirmButton => 'Restore';
+
+  @override
+  String get backupRestoring => 'Restoring backup...';
+
+  @override
+  String get backupRestored => 'Backup restored successfully';
+
+  @override
+  String get backupRestoreFailed => 'Failed to restore backup';
+
+  @override
+  String get backupInvalidFile => 'This file is not a valid SpotiFLAC backup';
+
+  @override
+  String get backupRestoreRestartHint =>
+      'Restart the app to make sure every change is applied.';
+
+  @override
+  String get backupContentsTitle => 'Backup contents';
+
+  @override
+  String get backupContentsSettings => 'App settings';
+
+  @override
+  String backupContentsHistory(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'items',
+      one: 'item',
+    );
+    return '$count history $_temp0';
+  }
+
+  @override
+  String backupContentsLiked(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return '$count liked $_temp0';
+  }
+
+  @override
+  String backupContentsWishlist(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return '$count wishlist $_temp0';
+  }
+
+  @override
+  String backupContentsPlaylists(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count playlists',
+      one: '1 playlist',
+    );
+    return '$_temp0';
+  }
+
+  @override
+  String backupContentsArtists(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count favorite artists',
+      one: '1 favorite artist',
+    );
+    return '$_temp0';
+  }
+
   @override
   String get tooltipLoveAll => 'Love All';
 

lib/l10n/app_localizations_ko.dart

@@ -2870,6 +2870,135 @@ class AppLocalizationsKo extends AppLocalizations {
   @override
   String get settingsDonateSubtitle => 'Buy the developer a coffee';
 
+  @override
+  String get settingsBackup => 'Backup & Restore';
+
+  @override
+  String get settingsBackupSubtitle =>
+      'Move your library, history and settings to a new device';
+
+  @override
+  String get backupTitle => 'Backup & Restore';
+
+  @override
+  String get backupExportSectionTitle => 'Create backup';
+
+  @override
+  String get backupExportSectionDescription =>
+      'Save your settings, download history, liked tracks, wishlist, favorite artists and playlists into a single file you can keep or move to another phone.';
+
+  @override
+  String get backupExportButton => 'Create backup file';
+
+  @override
+  String get backupImportSectionTitle => 'Restore backup';
+
+  @override
+  String get backupImportSectionDescription =>
+      'Pick a backup file to restore your data. This replaces the current settings, history and library on this device.';
+
+  @override
+  String get backupImportButton => 'Choose backup file';
+
+  @override
+  String get backupCreating => 'Creating backup...';
+
+  @override
+  String get backupCreated => 'Backup created';
+
+  @override
+  String get backupCreateFailed => 'Failed to create backup';
+
+  @override
+  String get backupEmpty => 'There is nothing to back up yet';
+
+  @override
+  String get backupRestoreConfirmTitle => 'Restore this backup?';
+
+  @override
+  String get backupRestoreConfirmMessage =>
+      'This will replace your current settings, download history, liked tracks, wishlist and playlists with the contents of the backup. This cannot be undone.';
+
+  @override
+  String get backupRestoreConfirmButton => 'Restore';
+
+  @override
+  String get backupRestoring => 'Restoring backup...';
+
+  @override
+  String get backupRestored => 'Backup restored successfully';
+
+  @override
+  String get backupRestoreFailed => 'Failed to restore backup';
+
+  @override
+  String get backupInvalidFile => 'This file is not a valid SpotiFLAC backup';
+
+  @override
+  String get backupRestoreRestartHint =>
+      'Restart the app to make sure every change is applied.';
+
+  @override
+  String get backupContentsTitle => 'Backup contents';
+
+  @override
+  String get backupContentsSettings => 'App settings';
+
+  @override
+  String backupContentsHistory(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'items',
+      one: 'item',
+    );
+    return '$count history $_temp0';
+  }
+
+  @override
+  String backupContentsLiked(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return '$count liked $_temp0';
+  }
+
+  @override
+  String backupContentsWishlist(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return '$count wishlist $_temp0';
+  }
+
+  @override
+  String backupContentsPlaylists(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count playlists',
+      one: '1 playlist',
+    );
+    return '$_temp0';
+  }
+
+  @override
+  String backupContentsArtists(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count favorite artists',
+      one: '1 favorite artist',
+    );
+    return '$_temp0';
+  }
+
   @override
   String get tooltipLoveAll => 'Love All';
 

lib/l10n/app_localizations_nl.dart

@@ -2885,6 +2885,135 @@ class AppLocalizationsNl extends AppLocalizations {
   @override
   String get settingsDonateSubtitle => 'Buy the developer a coffee';
 
+  @override
+  String get settingsBackup => 'Backup & Restore';
+
+  @override
+  String get settingsBackupSubtitle =>
+      'Move your library, history and settings to a new device';
+
+  @override
+  String get backupTitle => 'Backup & Restore';
+
+  @override
+  String get backupExportSectionTitle => 'Create backup';
+
+  @override
+  String get backupExportSectionDescription =>
+      'Save your settings, download history, liked tracks, wishlist, favorite artists and playlists into a single file you can keep or move to another phone.';
+
+  @override
+  String get backupExportButton => 'Create backup file';
+
+  @override
+  String get backupImportSectionTitle => 'Restore backup';
+
+  @override
+  String get backupImportSectionDescription =>
+      'Pick a backup file to restore your data. This replaces the current settings, history and library on this device.';
+
+  @override
+  String get backupImportButton => 'Choose backup file';
+
+  @override
+  String get backupCreating => 'Creating backup...';
+
+  @override
+  String get backupCreated => 'Backup created';
+
+  @override
+  String get backupCreateFailed => 'Failed to create backup';
+
+  @override
+  String get backupEmpty => 'There is nothing to back up yet';
+
+  @override
+  String get backupRestoreConfirmTitle => 'Restore this backup?';
+
+  @override
+  String get backupRestoreConfirmMessage =>
+      'This will replace your current settings, download history, liked tracks, wishlist and playlists with the contents of the backup. This cannot be undone.';
+
+  @override
+  String get backupRestoreConfirmButton => 'Restore';
+
+  @override
+  String get backupRestoring => 'Restoring backup...';
+
+  @override
+  String get backupRestored => 'Backup restored successfully';
+
+  @override
+  String get backupRestoreFailed => 'Failed to restore backup';
+
+  @override
+  String get backupInvalidFile => 'This file is not a valid SpotiFLAC backup';
+
+  @override
+  String get backupRestoreRestartHint =>
+      'Restart the app to make sure every change is applied.';
+
+  @override
+  String get backupContentsTitle => 'Backup contents';
+
+  @override
+  String get backupContentsSettings => 'App settings';
+
+  @override
+  String backupContentsHistory(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'items',
+      one: 'item',
+    );
+    return '$count history $_temp0';
+  }
+
+  @override
+  String backupContentsLiked(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return '$count liked $_temp0';
+  }
+
+  @override
+  String backupContentsWishlist(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return '$count wishlist $_temp0';
+  }
+
+  @override
+  String backupContentsPlaylists(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count playlists',
+      one: '1 playlist',
+    );
+    return '$_temp0';
+  }
+
+  @override
+  String backupContentsArtists(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count favorite artists',
+      one: '1 favorite artist',
+    );
+    return '$_temp0';
+  }
+
   @override
   String get tooltipLoveAll => 'Love All';
 

lib/l10n/app_localizations_pt.dart

@@ -2885,6 +2885,135 @@ class AppLocalizationsPt extends AppLocalizations {
   @override
   String get settingsDonateSubtitle => 'Buy the developer a coffee';
 
+  @override
+  String get settingsBackup => 'Backup & Restore';
+
+  @override
+  String get settingsBackupSubtitle =>
+      'Move your library, history and settings to a new device';
+
+  @override
+  String get backupTitle => 'Backup & Restore';
+
+  @override
+  String get backupExportSectionTitle => 'Create backup';
+
+  @override
+  String get backupExportSectionDescription =>
+      'Save your settings, download history, liked tracks, wishlist, favorite artists and playlists into a single file you can keep or move to another phone.';
+
+  @override
+  String get backupExportButton => 'Create backup file';
+
+  @override
+  String get backupImportSectionTitle => 'Restore backup';
+
+  @override
+  String get backupImportSectionDescription =>
+      'Pick a backup file to restore your data. This replaces the current settings, history and library on this device.';
+
+  @override
+  String get backupImportButton => 'Choose backup file';
+
+  @override
+  String get backupCreating => 'Creating backup...';
+
+  @override
+  String get backupCreated => 'Backup created';
+
+  @override
+  String get backupCreateFailed => 'Failed to create backup';
+
+  @override
+  String get backupEmpty => 'There is nothing to back up yet';
+
+  @override
+  String get backupRestoreConfirmTitle => 'Restore this backup?';
+
+  @override
+  String get backupRestoreConfirmMessage =>
+      'This will replace your current settings, download history, liked tracks, wishlist and playlists with the contents of the backup. This cannot be undone.';
+
+  @override
+  String get backupRestoreConfirmButton => 'Restore';
+
+  @override
+  String get backupRestoring => 'Restoring backup...';
+
+  @override
+  String get backupRestored => 'Backup restored successfully';
+
+  @override
+  String get backupRestoreFailed => 'Failed to restore backup';
+
+  @override
+  String get backupInvalidFile => 'This file is not a valid SpotiFLAC backup';
+
+  @override
+  String get backupRestoreRestartHint =>
+      'Restart the app to make sure every change is applied.';
+
+  @override
+  String get backupContentsTitle => 'Backup contents';
+
+  @override
+  String get backupContentsSettings => 'App settings';
+
+  @override
+  String backupContentsHistory(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'items',
+      one: 'item',
+    );
+    return '$count history $_temp0';
+  }
+
+  @override
+  String backupContentsLiked(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return '$count liked $_temp0';
+  }
+
+  @override
+  String backupContentsWishlist(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return '$count wishlist $_temp0';
+  }
+
+  @override
+  String backupContentsPlaylists(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count playlists',
+      one: '1 playlist',
+    );
+    return '$_temp0';
+  }
+
+  @override
+  String backupContentsArtists(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count favorite artists',
+      one: '1 favorite artist',
+    );
+    return '$_temp0';
+  }
+
   @override
   String get tooltipLoveAll => 'Love All';
 

lib/l10n/app_localizations_ru.dart

@@ -2940,6 +2940,135 @@ class AppLocalizationsRu extends AppLocalizations {
   @override
   String get settingsDonateSubtitle => 'Buy the developer a coffee';
 
+  @override
+  String get settingsBackup => 'Backup & Restore';
+
+  @override
+  String get settingsBackupSubtitle =>
+      'Move your library, history and settings to a new device';
+
+  @override
+  String get backupTitle => 'Backup & Restore';
+
+  @override
+  String get backupExportSectionTitle => 'Create backup';
+
+  @override
+  String get backupExportSectionDescription =>
+      'Save your settings, download history, liked tracks, wishlist, favorite artists and playlists into a single file you can keep or move to another phone.';
+
+  @override
+  String get backupExportButton => 'Create backup file';
+
+  @override
+  String get backupImportSectionTitle => 'Restore backup';
+
+  @override
+  String get backupImportSectionDescription =>
+      'Pick a backup file to restore your data. This replaces the current settings, history and library on this device.';
+
+  @override
+  String get backupImportButton => 'Choose backup file';
+
+  @override
+  String get backupCreating => 'Creating backup...';
+
+  @override
+  String get backupCreated => 'Backup created';
+
+  @override
+  String get backupCreateFailed => 'Failed to create backup';
+
+  @override
+  String get backupEmpty => 'There is nothing to back up yet';
+
+  @override
+  String get backupRestoreConfirmTitle => 'Restore this backup?';
+
+  @override
+  String get backupRestoreConfirmMessage =>
+      'This will replace your current settings, download history, liked tracks, wishlist and playlists with the contents of the backup. This cannot be undone.';
+
+  @override
+  String get backupRestoreConfirmButton => 'Restore';
+
+  @override
+  String get backupRestoring => 'Restoring backup...';
+
+  @override
+  String get backupRestored => 'Backup restored successfully';
+
+  @override
+  String get backupRestoreFailed => 'Failed to restore backup';
+
+  @override
+  String get backupInvalidFile => 'This file is not a valid SpotiFLAC backup';
+
+  @override
+  String get backupRestoreRestartHint =>
+      'Restart the app to make sure every change is applied.';
+
+  @override
+  String get backupContentsTitle => 'Backup contents';
+
+  @override
+  String get backupContentsSettings => 'App settings';
+
+  @override
+  String backupContentsHistory(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'items',
+      one: 'item',
+    );
+    return '$count history $_temp0';
+  }
+
+  @override
+  String backupContentsLiked(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return '$count liked $_temp0';
+  }
+
+  @override
+  String backupContentsWishlist(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return '$count wishlist $_temp0';
+  }
+
+  @override
+  String backupContentsPlaylists(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count playlists',
+      one: '1 playlist',
+    );
+    return '$_temp0';
+  }
+
+  @override
+  String backupContentsArtists(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count favorite artists',
+      one: '1 favorite artist',
+    );
+    return '$_temp0';
+  }
+
   @override
   String get tooltipLoveAll => 'Love All';
 

lib/l10n/app_localizations_tr.dart

@@ -2914,6 +2914,135 @@ class AppLocalizationsTr extends AppLocalizations {
   @override
   String get settingsDonateSubtitle => 'Buy the developer a coffee';
 
+  @override
+  String get settingsBackup => 'Backup & Restore';
+
+  @override
+  String get settingsBackupSubtitle =>
+      'Move your library, history and settings to a new device';
+
+  @override
+  String get backupTitle => 'Backup & Restore';
+
+  @override
+  String get backupExportSectionTitle => 'Create backup';
+
+  @override
+  String get backupExportSectionDescription =>
+      'Save your settings, download history, liked tracks, wishlist, favorite artists and playlists into a single file you can keep or move to another phone.';
+
+  @override
+  String get backupExportButton => 'Create backup file';
+
+  @override
+  String get backupImportSectionTitle => 'Restore backup';
+
+  @override
+  String get backupImportSectionDescription =>
+      'Pick a backup file to restore your data. This replaces the current settings, history and library on this device.';
+
+  @override
+  String get backupImportButton => 'Choose backup file';
+
+  @override
+  String get backupCreating => 'Creating backup...';
+
+  @override
+  String get backupCreated => 'Backup created';
+
+  @override
+  String get backupCreateFailed => 'Failed to create backup';
+
+  @override
+  String get backupEmpty => 'There is nothing to back up yet';
+
+  @override
+  String get backupRestoreConfirmTitle => 'Restore this backup?';
+
+  @override
+  String get backupRestoreConfirmMessage =>
+      'This will replace your current settings, download history, liked tracks, wishlist and playlists with the contents of the backup. This cannot be undone.';
+
+  @override
+  String get backupRestoreConfirmButton => 'Restore';
+
+  @override
+  String get backupRestoring => 'Restoring backup...';
+
+  @override
+  String get backupRestored => 'Backup restored successfully';
+
+  @override
+  String get backupRestoreFailed => 'Failed to restore backup';
+
+  @override
+  String get backupInvalidFile => 'This file is not a valid SpotiFLAC backup';
+
+  @override
+  String get backupRestoreRestartHint =>
+      'Restart the app to make sure every change is applied.';
+
+  @override
+  String get backupContentsTitle => 'Backup contents';
+
+  @override
+  String get backupContentsSettings => 'App settings';
+
+  @override
+  String backupContentsHistory(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'items',
+      one: 'item',
+    );
+    return '$count history $_temp0';
+  }
+
+  @override
+  String backupContentsLiked(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return '$count liked $_temp0';
+  }
+
+  @override
+  String backupContentsWishlist(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return '$count wishlist $_temp0';
+  }
+
+  @override
+  String backupContentsPlaylists(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count playlists',
+      one: '1 playlist',
+    );
+    return '$_temp0';
+  }
+
+  @override
+  String backupContentsArtists(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count favorite artists',
+      one: '1 favorite artist',
+    );
+    return '$_temp0';
+  }
+
   @override
   String get tooltipLoveAll => 'Love All';
 

lib/l10n/app_localizations_uk.dart

@@ -2929,6 +2929,135 @@ class AppLocalizationsUk extends AppLocalizations {
   @override
   String get settingsDonateSubtitle => 'Buy the developer a coffee';
 
+  @override
+  String get settingsBackup => 'Backup & Restore';
+
+  @override
+  String get settingsBackupSubtitle =>
+      'Move your library, history and settings to a new device';
+
+  @override
+  String get backupTitle => 'Backup & Restore';
+
+  @override
+  String get backupExportSectionTitle => 'Create backup';
+
+  @override
+  String get backupExportSectionDescription =>
+      'Save your settings, download history, liked tracks, wishlist, favorite artists and playlists into a single file you can keep or move to another phone.';
+
+  @override
+  String get backupExportButton => 'Create backup file';
+
+  @override
+  String get backupImportSectionTitle => 'Restore backup';
+
+  @override
+  String get backupImportSectionDescription =>
+      'Pick a backup file to restore your data. This replaces the current settings, history and library on this device.';
+
+  @override
+  String get backupImportButton => 'Choose backup file';
+
+  @override
+  String get backupCreating => 'Creating backup...';
+
+  @override
+  String get backupCreated => 'Backup created';
+
+  @override
+  String get backupCreateFailed => 'Failed to create backup';
+
+  @override
+  String get backupEmpty => 'There is nothing to back up yet';
+
+  @override
+  String get backupRestoreConfirmTitle => 'Restore this backup?';
+
+  @override
+  String get backupRestoreConfirmMessage =>
+      'This will replace your current settings, download history, liked tracks, wishlist and playlists with the contents of the backup. This cannot be undone.';
+
+  @override
+  String get backupRestoreConfirmButton => 'Restore';
+
+  @override
+  String get backupRestoring => 'Restoring backup...';
+
+  @override
+  String get backupRestored => 'Backup restored successfully';
+
+  @override
+  String get backupRestoreFailed => 'Failed to restore backup';
+
+  @override
+  String get backupInvalidFile => 'This file is not a valid SpotiFLAC backup';
+
+  @override
+  String get backupRestoreRestartHint =>
+      'Restart the app to make sure every change is applied.';
+
+  @override
+  String get backupContentsTitle => 'Backup contents';
+
+  @override
+  String get backupContentsSettings => 'App settings';
+
+  @override
+  String backupContentsHistory(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'items',
+      one: 'item',
+    );
+    return '$count history $_temp0';
+  }
+
+  @override
+  String backupContentsLiked(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return '$count liked $_temp0';
+  }
+
+  @override
+  String backupContentsWishlist(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return '$count wishlist $_temp0';
+  }
+
+  @override
+  String backupContentsPlaylists(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count playlists',
+      one: '1 playlist',
+    );
+    return '$_temp0';
+  }
+
+  @override
+  String backupContentsArtists(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count favorite artists',
+      one: '1 favorite artist',
+    );
+    return '$_temp0';
+  }
+
   @override
   String get tooltipLoveAll => 'Уподобати всіх';
 

lib/l10n/app_localizations_zh.dart

@@ -2885,6 +2885,135 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get settingsDonateSubtitle => 'Buy the developer a coffee';
 
+  @override
+  String get settingsBackup => 'Backup & Restore';
+
+  @override
+  String get settingsBackupSubtitle =>
+      'Move your library, history and settings to a new device';
+
+  @override
+  String get backupTitle => 'Backup & Restore';
+
+  @override
+  String get backupExportSectionTitle => 'Create backup';
+
+  @override
+  String get backupExportSectionDescription =>
+      'Save your settings, download history, liked tracks, wishlist, favorite artists and playlists into a single file you can keep or move to another phone.';
+
+  @override
+  String get backupExportButton => 'Create backup file';
+
+  @override
+  String get backupImportSectionTitle => 'Restore backup';
+
+  @override
+  String get backupImportSectionDescription =>
+      'Pick a backup file to restore your data. This replaces the current settings, history and library on this device.';
+
+  @override
+  String get backupImportButton => 'Choose backup file';
+
+  @override
+  String get backupCreating => 'Creating backup...';
+
+  @override
+  String get backupCreated => 'Backup created';
+
+  @override
+  String get backupCreateFailed => 'Failed to create backup';
+
+  @override
+  String get backupEmpty => 'There is nothing to back up yet';
+
+  @override
+  String get backupRestoreConfirmTitle => 'Restore this backup?';
+
+  @override
+  String get backupRestoreConfirmMessage =>
+      'This will replace your current settings, download history, liked tracks, wishlist and playlists with the contents of the backup. This cannot be undone.';
+
+  @override
+  String get backupRestoreConfirmButton => 'Restore';
+
+  @override
+  String get backupRestoring => 'Restoring backup...';
+
+  @override
+  String get backupRestored => 'Backup restored successfully';
+
+  @override
+  String get backupRestoreFailed => 'Failed to restore backup';
+
+  @override
+  String get backupInvalidFile => 'This file is not a valid SpotiFLAC backup';
+
+  @override
+  String get backupRestoreRestartHint =>
+      'Restart the app to make sure every change is applied.';
+
+  @override
+  String get backupContentsTitle => 'Backup contents';
+
+  @override
+  String get backupContentsSettings => 'App settings';
+
+  @override
+  String backupContentsHistory(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'items',
+      one: 'item',
+    );
+    return '$count history $_temp0';
+  }
+
+  @override
+  String backupContentsLiked(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return '$count liked $_temp0';
+  }
+
+  @override
+  String backupContentsWishlist(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return '$count wishlist $_temp0';
+  }
+
+  @override
+  String backupContentsPlaylists(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count playlists',
+      one: '1 playlist',
+    );
+    return '$_temp0';
+  }
+
+  @override
+  String backupContentsArtists(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count favorite artists',
+      one: '1 favorite artist',
+    );
+    return '$_temp0';
+  }
+
   @override
   String get tooltipLoveAll => 'Love All';
 

lib/l10n/arb/app_en.arb

@@ -3827,6 +3827,143 @@
   "@settingsDonateSubtitle": {
     "description": "Subtitle for donate menu item"
   },
+  "settingsBackup": "Backup & Restore",
+  "@settingsBackup": {
+    "description": "Settings menu item - backup and restore page"
+  },
+  "settingsBackupSubtitle": "Move your library, history and settings to a new device",
+  "@settingsBackupSubtitle": {
+    "description": "Subtitle for backup and restore settings item"
+  },
+  "backupTitle": "Backup & Restore",
+  "@backupTitle": {
+    "description": "App bar title for the backup and restore page"
+  },
+  "backupExportSectionTitle": "Create backup",
+  "@backupExportSectionTitle": {
+    "description": "Section title for the export/backup card"
+  },
+  "backupExportSectionDescription": "Save your settings, download history, liked tracks, wishlist, favorite artists and playlists into a single file you can keep or move to another phone.",
+  "@backupExportSectionDescription": {
+    "description": "Description of what a backup contains"
+  },
+  "backupExportButton": "Create backup file",
+  "@backupExportButton": {
+    "description": "Button to create and share a backup file"
+  },
+  "backupImportSectionTitle": "Restore backup",
+  "@backupImportSectionTitle": {
+    "description": "Section title for the import/restore card"
+  },
+  "backupImportSectionDescription": "Pick a backup file to restore your data. This replaces the current settings, history and library on this device.",
+  "@backupImportSectionDescription": {
+    "description": "Description for the restore action"
+  },
+  "backupImportButton": "Choose backup file",
+  "@backupImportButton": {
+    "description": "Button to pick a backup file to restore"
+  },
+  "backupCreating": "Creating backup...",
+  "@backupCreating": {
+    "description": "Progress text while a backup is being created"
+  },
+  "backupCreated": "Backup created",
+  "@backupCreated": {
+    "description": "Snackbar after a backup file is created"
+  },
+  "backupCreateFailed": "Failed to create backup",
+  "@backupCreateFailed": {
+    "description": "Snackbar when backup creation fails"
+  },
+  "backupEmpty": "There is nothing to back up yet",
+  "@backupEmpty": {
+    "description": "Snackbar when there is no data to back up"
+  },
+  "backupRestoreConfirmTitle": "Restore this backup?",
+  "@backupRestoreConfirmTitle": {
+    "description": "Confirmation dialog title before restoring a backup"
+  },
+  "backupRestoreConfirmMessage": "This will replace your current settings, download history, liked tracks, wishlist and playlists with the contents of the backup. This cannot be undone.",
+  "@backupRestoreConfirmMessage": {
+    "description": "Confirmation dialog message before restoring a backup"
+  },
+  "backupRestoreConfirmButton": "Restore",
+  "@backupRestoreConfirmButton": {
+    "description": "Confirm button to proceed with restore"
+  },
+  "backupRestoring": "Restoring backup...",
+  "@backupRestoring": {
+    "description": "Progress text while restoring a backup"
+  },
+  "backupRestored": "Backup restored successfully",
+  "@backupRestored": {
+    "description": "Snackbar after a successful restore"
+  },
+  "backupRestoreFailed": "Failed to restore backup",
+  "@backupRestoreFailed": {
+    "description": "Snackbar when restore fails"
+  },
+  "backupInvalidFile": "This file is not a valid SpotiFLAC backup",
+  "@backupInvalidFile": {
+    "description": "Snackbar when the chosen file is not a valid backup"
+  },
+  "backupRestoreRestartHint": "Restart the app to make sure every change is applied.",
+  "@backupRestoreRestartHint": {
+    "description": "Hint shown after restoring that an app restart is recommended"
+  },
+  "backupContentsTitle": "Backup contents",
+  "@backupContentsTitle": {
+    "description": "Header above the list summarizing what the backup contains"
+  },
+  "backupContentsSettings": "App settings",
+  "@backupContentsSettings": {
+    "description": "Backup contents row label for settings"
+  },
+  "backupContentsHistory": "{count} history {count, plural, =1{item} other{items}}",
+  "@backupContentsHistory": {
+    "description": "Backup contents row for history count",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
+  "backupContentsLiked": "{count} liked {count, plural, =1{track} other{tracks}}",
+  "@backupContentsLiked": {
+    "description": "Backup contents row for liked tracks count",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
+  "backupContentsWishlist": "{count} wishlist {count, plural, =1{track} other{tracks}}",
+  "@backupContentsWishlist": {
+    "description": "Backup contents row for wishlist tracks count",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
+  "backupContentsPlaylists": "{count, plural, =1{1 playlist} other{{count} playlists}}",
+  "@backupContentsPlaylists": {
+    "description": "Backup contents row for playlist count",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
+  "backupContentsArtists": "{count, plural, =1{1 favorite artist} other{{count} favorite artists}}",
+  "@backupContentsArtists": {
+    "description": "Backup contents row for favorite artists count",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
   "tooltipLoveAll": "Love All",
   "@tooltipLoveAll": {
     "description": "Tooltip for the Love All button on album/playlist screens"

lib/l10n/arb/app_id.arb

@@ -3689,6 +3689,69 @@
   "@settingsDonateSubtitle": {
     "description": "Subtitle for donate menu item"
   },
+  "settingsBackup": "Cadangkan & Pulihkan",
+  "settingsBackupSubtitle": "Pindahkan pustaka, riwayat, dan pengaturan ke perangkat baru",
+  "backupTitle": "Cadangkan & Pulihkan",
+  "backupExportSectionTitle": "Buat cadangan",
+  "backupExportSectionDescription": "Simpan pengaturan, riwayat unduhan, lagu disukai, wishlist, artis favorit, dan playlist ke dalam satu file yang bisa kamu simpan atau pindahkan ke ponsel lain.",
+  "backupExportButton": "Buat file cadangan",
+  "backupImportSectionTitle": "Pulihkan cadangan",
+  "backupImportSectionDescription": "Pilih file cadangan untuk memulihkan data. Ini akan menggantikan pengaturan, riwayat, dan pustaka di perangkat ini.",
+  "backupImportButton": "Pilih file cadangan",
+  "backupCreating": "Membuat cadangan...",
+  "backupCreated": "Cadangan berhasil dibuat",
+  "backupCreateFailed": "Gagal membuat cadangan",
+  "backupEmpty": "Belum ada data untuk dicadangkan",
+  "backupRestoreConfirmTitle": "Pulihkan cadangan ini?",
+  "backupRestoreConfirmMessage": "Ini akan menggantikan pengaturan, riwayat unduhan, lagu disukai, wishlist, dan playlist saat ini dengan isi cadangan. Tindakan ini tidak bisa dibatalkan.",
+  "backupRestoreConfirmButton": "Pulihkan",
+  "backupRestoring": "Memulihkan cadangan...",
+  "backupRestored": "Cadangan berhasil dipulihkan",
+  "backupRestoreFailed": "Gagal memulihkan cadangan",
+  "backupInvalidFile": "File ini bukan cadangan SpotiFLAC yang valid",
+  "backupRestoreRestartHint": "Mulai ulang aplikasi untuk memastikan semua perubahan diterapkan.",
+  "backupContentsTitle": "Isi cadangan",
+  "backupContentsSettings": "Pengaturan aplikasi",
+  "backupContentsHistory": "{count} item riwayat",
+  "@backupContentsHistory": {
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
+  "backupContentsLiked": "{count} lagu disukai",
+  "@backupContentsLiked": {
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
+  "backupContentsWishlist": "{count} lagu di wishlist",
+  "@backupContentsWishlist": {
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
+  "backupContentsPlaylists": "{count, plural, =1{1 playlist} other{{count} playlist}}",
+  "@backupContentsPlaylists": {
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
+  "backupContentsArtists": "{count, plural, =1{1 artis favorit} other{{count} artis favorit}}",
+  "@backupContentsArtists": {
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
   "tooltipLoveAll": "Love All",
   "@tooltipLoveAll": {
     "description": "Tooltip for the Love All button on album/playlist screens"