chore: 更新主题、反馈页面和测试用例

- 更新 App 主题配置
- 优化反馈页面
- 更新认证和通知测试用例

apps/test/features/notifications/notification_bloc_test.dart

@@ -17,6 +17,7 @@ class _FakeNotificationRepository implements NotificationRepository {
   Future<NotificationListResult> listNotifications({
     int limit = 20,
     String? cursor,
+    String locale = 'zh',
   }) async {
     return NotificationListResult(
       items: items,
@@ -29,7 +30,10 @@ class _FakeNotificationRepository implements NotificationRepository {
   Future<int> getUnreadCount() async => unreadCount;
 
   @override
-  Future<NotificationItem> markRead({required String notificationId}) async {
+  Future<NotificationItem> markRead({
+    required String notificationId,
+    String locale = 'zh',
+  }) async {
     if (failMarkRead) {
       throw Exception('Mark read failed');
     }