feat: Phase 1-3 全部完成 — 沙盒增强、学情分析、学习路径

backend/src/modules/notifications/notification.module.ts

@@ -0,0 +1,10 @@
+import { Module } from '@nestjs/common';
+import { NotificationController } from './notification.controller';
+import { NotificationService } from './notification.service';
+
+@Module({
+  controllers: [NotificationController],
+  providers: [NotificationService],
+  exports: [NotificationService],
+})
+export class NotificationModule {}