整个课程和数据UI重新设计版本

kouyu_english/lib/main.dart

@@ -2,12 +2,16 @@ import 'package:flutter/material.dart';
 
 import 'core/app_state.dart';
 import 'core/app_theme.dart';
+import 'core/courses/course_repository.dart';
 import 'core/sync/sync_coordinator.dart';
 import 'core/sherpa_stt_service.dart';
 import 'features/onboarding/onboarding_pages.dart';
 import 'features/shell/learning_shell.dart';
 
-void main() {
+Future<void> main() async {
+  WidgetsFlutterBinding.ensureInitialized();
+  // A0 is the offline baseline; the later levels load with the app state.
+  await CourseRepository.instance.load(levels: {'A0'});
   runApp(const KouyuEnglishApp());
 }