feat(ai): 添加AI报告生成历史记录功能，支持每日生成限制和双API提供商

src/app.module.ts

@@ -1,10 +1,12 @@
 import { Module } from "@nestjs/common";
+import { APP_GUARD } from '@nestjs/core';
 import { AppController } from "./app.controller";
 import { AppService } from "./app.service";
 import { DatabaseModule } from "./database/database.module";
 import { UsersModule } from "./users/users.module";
 import { ConfigModule } from '@nestjs/config';
 import { ScheduleModule } from '@nestjs/schedule';
+import { ThrottlerModule, ThrottlerGuard } from '@nestjs/throttler';
 import { LoggerModule } from './common/logger/logger.module';
 import { CheckinsModule } from './checkins/checkins.module';
 import { AiCoachModule } from './ai-coach/ai-coach.module';
@@ -30,6 +32,10 @@ import { MedicationsModule } from './medications/medications.module';
       envFilePath: '.env',
     }),
     ScheduleModule.forRoot(),
+    ThrottlerModule.forRoot([{
+      ttl: 60000, // 时间窗口：60秒
+      limit: 100, // 每个时间窗口最多100个请求
+    }]),
     LoggerModule,
     DatabaseModule,
     UsersModule,
@@ -51,6 +57,12 @@ import { MedicationsModule } from './medications/medications.module';
     MedicationsModule,
   ],
   controllers: [AppController],
-  providers: [AppService],
+  providers: [
+    AppService,
+    {
+      provide: APP_GUARD,
+      useClass: ThrottlerGuard,
+    },
+  ],
 })
 export class AppModule { }