feat: 添加起卦教程首次访问追踪和Agent时间上下文

- 后端 ProfileSettingsV1 添加 DivinationTutorialSettings 字段
- 前端三个起卦页面添加首次访问检测，自动弹出教程
- 教程展示后更新 settings 标记，避免重复弹出
- 使用本地状态管理避免并发更新覆盖问题
- Agent 系统提示添加时间上下文信息

apps/test/features/divination/divination_screen_test.dart

@@ -11,6 +11,7 @@ import 'package:meeyao_qianwen/features/divination/data/services/divination_run_
 import 'package:meeyao_qianwen/features/divination/presentation/screens/auto_divination_screen.dart';
 import 'package:meeyao_qianwen/features/divination/presentation/screens/divination_screen.dart';
 import 'package:meeyao_qianwen/features/divination/presentation/screens/manual_divination_screen.dart';
+import 'package:meeyao_qianwen/features/settings/data/models/profile_settings.dart';
 import 'package:meeyao_qianwen/l10n/app_localizations.dart';
 
 void main() {
@@ -18,6 +19,9 @@ void main() {
     api: DivinationApi(apiClient: ApiClient(baseUrl: 'http://localhost:5775')),
   );
   final sessionStore = SessionStore(LocalKvStore());
+  final profileSettings = ProfileSettingsV1.defaultsForLocale(
+    const Locale('zh'),
+  );
 
   testWidgets('divination screen navigates to auto screen', (tester) async {
     await tester.pumpWidget(
@@ -36,6 +40,8 @@ void main() {
           userId: 'user_test',
           onCompleted: (_) async {},
           runServiceOverride: runService,
+          profileSettings: profileSettings,
+          onProfileSettingsChanged: (_) async {},
         ),
       ),
     );
@@ -77,6 +83,8 @@ void main() {
           params: params,
           runService: runService,
           onCompleted: (_) async {},
+          profileSettings: profileSettings,
+          onProfileSettingsChanged: (_) async {},
         ),
       ),
     );
@@ -108,6 +116,8 @@ void main() {
           userId: 'user_test',
           onCompleted: (_) async {},
           runServiceOverride: runService,
+          profileSettings: profileSettings,
+          onProfileSettingsChanged: (_) async {},
         ),
       ),
     );

apps/test/features/divination/manual_divination_screen_test.dart

@@ -7,6 +7,7 @@ import 'package:meeyao_qianwen/features/divination/data/apis/divination_api.dart
 import 'package:meeyao_qianwen/features/divination/data/models/divination_params.dart';
 import 'package:meeyao_qianwen/features/divination/data/services/divination_run_service.dart';
 import 'package:meeyao_qianwen/features/divination/presentation/screens/manual_divination_screen.dart';
+import 'package:meeyao_qianwen/features/settings/data/models/profile_settings.dart';
 import 'package:meeyao_qianwen/l10n/app_localizations.dart';
 
 void main() {
@@ -24,6 +25,9 @@ void main() {
         apiClient: ApiClient(baseUrl: 'http://localhost:5775'),
       ),
     );
+    final profileSettings = ProfileSettingsV1.defaultsForLocale(
+      const Locale('zh'),
+    );
 
     await tester.pumpWidget(
       MaterialApp(
@@ -39,6 +43,8 @@ void main() {
           params: params,
           runService: runService,
           onCompleted: (_) async {},
+          profileSettings: profileSettings,
+          onProfileSettingsChanged: (_) async {},
         ),
       ),
     );