feat: complete Day 21-24 knowledge base features

- Day 21-22: fix CORS and file upload issues
- Day 23-24: implement @knowledge base search and conversation integration
- Backend: integrate Dify RAG into conversation system
- Frontend: load knowledge base list and @ reference feature

backend/src/index.ts

@@ -8,12 +8,6 @@ import { agentRoutes } from './routes/agents.js';
 import { conversationRoutes } from './routes/conversations.js';
 import knowledgeBaseRoutes from './routes/knowledgeBases.js';
 
-console.log('\n' + '='.repeat(60));
-console.log('🔧 正在加载修复后的服务器配置...');
-console.log('📅 修复版本: 2025-10-11 - CORS完整配置');
-console.log('='.repeat(60) + '\n');
-
-console.log('🚨🚨🚨 测试日志: 文件已加载 🚨🚨🚨');
 
 // 全局处理BigInt序列化
 (BigInt.prototype as any).toJSON = function() {
@@ -54,10 +48,6 @@ await fastify.register(multipart, {
 });
 console.log('✅ 文件上传插件已配置: 最大文件大小 10MB');
 
-// 添加请求日志钩子（用于调试）
-fastify.addHook('onRequest', async (request, _reply) => {
-  console.log(`📥 ${request.method} ${request.url} - Origin: ${request.headers.origin || 'none'}`);
-});
 
 // 健康检查路由
 fastify.get('/health', async () => {