Merge branch 'dev' into happi/dev/database-update

# Conflicts:
#	apps/im_app/lib/data/models/user_dto.dart
#	apps/im_app/lib/data/remote/login_request.dart
#	apps/im_app/lib/features/chat/presentation/chat_db_test_view_model.dart
#	apps/im_app/lib/features/chat/view/chat_db_test_page.dart
#	apps/im_app/lib/features/login/presentation/login_view_model.dart

apps/im_app/lib/features/chat/presentation/chat_db_test_state.dart

@@ -0,0 +1,39 @@
+// 数据库测试页状态（Demo，正式开发后随页面一并删除）
+
+/// 单条测试结果记录
+class TestResult {
+  final String title;
+  final String subtitle;
+  final String duration;
+
+  TestResult({
+    required this.title,
+    required this.subtitle,
+    required this.duration,
+  });
+}
+
+class ChatDbTestState {
+  final bool testStarted;
+  final List<TestResult> testResults;
+  final String currentState;
+
+  const ChatDbTestState({
+    this.testStarted = false,
+    this.testResults = const [],
+    this.currentState = '',
+  });
+
+  /// 按钮文案（Widget 直接读，不在 View 层做判断）
+  String get buttonLabel => testStarted ? '结束' : '开始';
+
+  ChatDbTestState copyWith({
+    bool? testStarted,
+    List<TestResult>? testResults,
+    String? currentState,
+  }) => ChatDbTestState(
+    testStarted: testStarted ?? this.testStarted,
+    testResults: testResults ?? this.testResults,
+    currentState: currentState ?? this.currentState,
+  );
+}