feat: 添加 AI 推荐功能

新增 AI 推荐模块，包括前端界面和后端服务
添加 OpenAI API 密钥配置
实现工程数据分析和推荐功能

src/ai/ai.controller.ts

@@ -0,0 +1,23 @@
+import { Controller, Post, Body } from '@nestjs/common';
+import { AiService } from './ai.service';
+
+export class BidDataDto {
+  title: string;
+  url: string;
+  source: string;
+  publishDate: string;
+}
+
+export class BidsRequestDto {
+  bids: BidDataDto[];
+}
+
+@Controller('api/ai')
+export class AiController {
+  constructor(private readonly aiService: AiService) {}
+
+  @Post('recommendations')
+  async getRecommendations(@Body() request: BidsRequestDto) {
+    return this.aiService.getRecommendations(request.bids);
+  }
+}

src/ai/ai.module.ts

@@ -0,0 +1,12 @@
+import { Module } from '@nestjs/common';
+import { ConfigModule } from '@nestjs/config';
+import { AiController } from './ai.controller';
+import { AiService } from './ai.service';
+
+@Module({
+  imports: [ConfigModule],
+  controllers: [AiController],
+  providers: [AiService],
+  exports: [AiService],
+})
+export class AiModule {}

src/app.module.ts

@@ -9,6 +9,7 @@ import { KeywordsModule } from './keywords/keywords.module';
 import { CrawlerModule } from './crawler/crawler.module';
 import { TasksModule } from './schedule/schedule.module';
 import { LoggerModule } from './common/logger/logger.module';
+import { AiModule } from './ai/ai.module';
 
 @Module({
   imports: [
@@ -16,7 +17,7 @@ import { LoggerModule } from './common/logger/logger.module';
     ScheduleModule.forRoot(),
     ServeStaticModule.forRoot({
       rootPath: join(__dirname, '..', 'frontend', 'dist'),
-      exclude: ['/api*'],
+      exclude: ['/api/(.*)'],
     }),
     LoggerModule,
     DatabaseModule,
@@ -24,6 +25,7 @@ import { LoggerModule } from './common/logger/logger.module';
     KeywordsModule,
     CrawlerModule,
     TasksModule,
+    AiModule,
   ],
 })
 export class AppModule {}