feat(flutter): 优化登录页与底部导航

test/config/l10n_id_test.dart

@@ -45,4 +45,13 @@ void main() {
     expect(l10n.episodeProgress(2, 10), contains('2'));
     expect(l10n.episodeProgress(2, 10), contains('10'));
   });
+
+  test('should_keep_auth_ui_copy_in_all_supported_locales', () async {
+    for (final locale in const [Locale('en'), Locale('zh'), Locale('id')]) {
+      final l10n = await AppLocalizations.delegate.load(locale);
+      expect(l10n.authBrandTagline, isNotEmpty);
+      expect(l10n.showPassword, isNotEmpty);
+      expect(l10n.hidePassword, isNotEmpty);
+    }
+  });
 }