feat: 新增饮食记录模块，含增删改查及营养汇总功能

src/ai-coach/ai-coach.module.ts

@@ -8,11 +8,13 @@ import { AiMessage } from './models/ai-message.model';
 import { AiConversation } from './models/ai-conversation.model';
 import { PostureAssessment } from './models/posture-assessment.model';
 import { UsersModule } from '../users/users.module';
+import { DietRecordsModule } from '../diet-records/diet-records.module';
 
 @Module({
   imports: [
     ConfigModule,
     UsersModule,
+    DietRecordsModule,
     SequelizeModule.forFeature([AiConversation, AiMessage, PostureAssessment]),
   ],
   controllers: [AiCoachController],