1）修改数据库命名，不和业务使用重合。

2）修改user 表，uid为unique, 聊天室文件夹name unique移除

apps/im_app/lib/features/login/presentation/login_view_model.dart

@@ -1,4 +1,8 @@
-import 'package:flutter/foundation.dart';
+import 'dart:convert';
+
+import 'package:flutter/services.dart';
+import 'package:im_app/data/models/user_dto.dart';
+import 'package:im_app/data/remote/login_request.dart';
 import 'package:networks_sdk/networks_sdk.dart';
 import 'package:im_app/app/di/db_provider.dart';
 import 'package:riverpod_annotation/riverpod_annotation.dart';
@@ -56,10 +60,22 @@ class LoginViewModel extends _$LoginViewModel {
   /// 正式 [login] 成功后同样需要调用 [AuthNotifier.login] 更新守卫状态。
   Future<void> demoLogin() async {
     final storageApi = ref.read(storageSdkProvider);
-    ///TODO: StorageSDKLifeCycle 需要只在主项目暴露
     final storageLifeCycle = storageApi as StorageSdkLifecycle;
-    ref.read(authNotifierProvider).login();
-    await storageLifeCycle.openDatabase(1234567);
+    final provider = ref.read(authNotifierProvider);
+
+    // Read mock response from assets
+    final String raw = await rootBundle.loadString('assets/loginData.json');
+    final Map<String, dynamic> json = jsonDecode(raw);
+
+    // Parse into LoginData (nested under 'data' key)
+    final loginResponse = LoginResponse.fromJson(json);
+    final user = loginResponse.data.toEntity();
+
+    provider.login();
+    // Open database for the user
+    await storageLifeCycle.openDatabase(user.uid);
+    final userCompanion = UserDto.fromEntity(user).toCompanion();
+    storageApi.insert(userCompanion);
   }
 
   /// 执行登录