feat: add general chat feature (without project/agent concept)

backend/src/index.ts

@@ -7,6 +7,7 @@ import { projectRoutes } from './routes/projects.js';
 import { agentRoutes } from './routes/agents.js';
 import { conversationRoutes } from './routes/conversations.js';
 import knowledgeBaseRoutes from './routes/knowledgeBases.js';
+import { chatRoutes } from './routes/chatRoutes.js';
 
 
 // 全局处理BigInt序列化
@@ -89,6 +90,9 @@ await fastify.register(conversationRoutes, { prefix: '/api/v1' });
 // 注册知识库管理路由
 await fastify.register(knowledgeBaseRoutes, { prefix: '/api/v1' });
 
+// 注册通用对话路由
+await fastify.register(chatRoutes, { prefix: '/api/v1' });
+
 // 启动服务器
 const start = async () => {
   try {