feat: 添加食物识别功能，支持根据图片URL识别食物并转换为饮食记录格式

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

@@ -1,4 +1,4 @@
-import { Module } from '@nestjs/common';
+import { Module, forwardRef } from '@nestjs/common';
 import { SequelizeModule } from '@nestjs/sequelize';
 import { ConfigModule } from '@nestjs/config';
 import { AiCoachController } from './ai-coach.controller';
@@ -14,11 +14,12 @@ import { DietRecordsModule } from '../diet-records/diet-records.module';
   imports: [
     ConfigModule,
     UsersModule,
-    DietRecordsModule,
+    forwardRef(() => DietRecordsModule),
     SequelizeModule.forFeature([AiConversation, AiMessage, PostureAssessment]),
   ],
   controllers: [AiCoachController],
   providers: [AiCoachService, DietAnalysisService],
+  exports: [DietAnalysisService],
 })
 export class AiCoachModule { }