12306 MCP 服务端 启动服务 node server_sse.js 配置MCP地址 SSE:http://localhost:3000/sse Installing via Smithery To install 12306 MCP 服务端 for Claude Desktop automatically via Smithery: npx -y @smithery/cli install @other-blowsnow/mcp-server-chinarailway --client claude