feat: 添加账号删除功能

apps/lib/l10n/app_localizations_en.dart

@@ -222,6 +222,9 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get settingsSectionNotification => 'Notification Settings';
 
+  @override
+  String get settingsAccountAndDataTitle => 'Account Data';
+
   @override
   String get settingsInterfaceLanguage => 'Interface Language';
 
@@ -349,6 +352,52 @@ class AppLocalizationsEn extends AppLocalizations {
   String get settingsLogoutDialogBody =>
       'You will need to sign in again to continue with this account.';
 
+  @override
+  String get settingsDeleteAccountTitle => 'Delete Account';
+
+  @override
+  String get settingsDeleteAccountSubtitle =>
+      'Permanently delete your account and personal data';
+
+  @override
+  String get settingsDeleteAccountWarningTitle =>
+      'Please confirm before deleting';
+
+  @override
+  String get settingsDeleteAccountWarningBody =>
+      'After deletion, related data including profile, history, and points will be permanently removed and cannot be restored.';
+
+  @override
+  String get settingsDeleteAccountScopeProfile =>
+      'Profile and account information will be deleted';
+
+  @override
+  String get settingsDeleteAccountScopeHistory =>
+      'Divination history records will be deleted';
+
+  @override
+  String get settingsDeleteAccountScopePoints =>
+      'Points account and ledger records will be deleted';
+
+  @override
+  String get settingsDeleteAccountDialogTitle =>
+      'Permanently delete this account?';
+
+  @override
+  String get settingsDeleteAccountDialogBody =>
+      'This action cannot be undone. Deletion will start immediately after confirmation.';
+
+  @override
+  String get settingsDeleteAccountAction => 'Delete Account';
+
+  @override
+  String get settingsDeleteAccountProcessing => 'Deleting...';
+
+  @override
+  String settingsDeleteAccountWaitAction(int seconds) {
+    return 'Wait ${seconds}s before confirming deletion';
+  }
+
   @override
   String get settingsCancel => 'Cancel';
 
@@ -501,6 +550,10 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get errorRequestGeneric => 'Request failed, please try again';
 
+  @override
+  String get errorProfileDeleteFailed =>
+      'Failed to delete account, please try again';
+
   @override
   String get errorRunLimitExceeded =>
       'Run limit reached in this session. Please start a new divination.';