fix：参考金值，研听，研值工程通用通用工程公共能力，重点对比网络请求、登录认证、状态管理、本地存储、WebView、推送、版本更新、一键登录、主题/UI 等模块，确定后续统一整改方案

test/features/mall/mall_entry_promo_store_test.dart

@@ -1,11 +1,14 @@
 import 'package:flutter_test/flutter_test.dart';
+import 'package:jinzhi_flutter_app/common/storage/preferences_storage.dart';
 import 'package:jinzhi_flutter_app/features/mall/application/mall_entry_promo_store.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 
 void main() {
   test('records each first-install mall promotion exposure once', () async {
     SharedPreferences.setMockInitialValues(<String, Object>{});
-    final store = MallEntryPromoStore(await SharedPreferences.getInstance());
+    final store = MallEntryPromoStore(
+      PreferencesStorage(await SharedPreferences.getInstance()),
+    );
 
     expect(store.hasOpenedMall, isFalse);
     expect(store.hasSeenHomeBadge, isFalse);