整个课程和数据UI重新设计版本

kouyu_english/lib/core/courses/courses.dart

@@ -0,0 +1,11 @@
+/// Course content and lookups, A0 through B1, from the JSON packs loaded by
+/// `CourseRepository`.
+library;
+
+export 'answer_matching.dart';
+export 'answer_rules.dart';
+export 'assessment.dart';
+export 'core_items.dart';
+export 'course_catalog.dart';
+export 'course_models.dart';
+export 'option_order.dart';