fix: discover next-server (#75)

Author: huozhi

package.json

@@ -34,6 +34,7 @@
   "dependencies": {
     "@modelcontextprotocol/sdk": "1.20.0",
     "find-process": "^2.0.0",
+    "pid-port": "^2.0.0",
     "xmcp": "^0.3.5",
     "zod": "^3.25.76"
   },