feat(electron): 添加Electron桌面应用支持

- 新增Electron主进程、预加载脚本和构建配置
- 修改前端配置以支持Electron打包
- 更新项目文档和依赖
- 重构API调用使用统一axios实例

src/database/database.module.ts

@@ -1,10 +1,6 @@
 import { Module } from '@nestjs/common';
 import { TypeOrmModule } from '@nestjs/typeorm';
 import { ConfigModule, ConfigService } from '@nestjs/config';
-import { BidItem } from '../bids/entities/bid-item.entity';
-import { Keyword } from '../keywords/keyword.entity';
-import { AiRecommendation } from '../ai/entities/ai-recommendation.entity';
-import { CrawlInfoAdd } from '../crawler/entities/crawl-info-add.entity';
 
 @Module({
   imports: [
@@ -22,7 +18,7 @@ import { CrawlInfoAdd } from '../crawler/entities/crawl-info-add.entity';
         username: configService.get<string>('DATABASE_USERNAME', 'root'),
         password: configService.get<string>('DATABASE_PASSWORD', 'root'),
         database: configService.get<string>('DATABASE_NAME', 'bidding'),
-        entities: [BidItem, Keyword, AiRecommendation, CrawlInfoAdd],
+        entities: [__dirname + '/../**/*.entity{.ts,.js}'],
         synchronize: false,
       }),
     }),