{"ok":true,"class":"managed-frontdoor-ws-echo","stage":"f1-neutral-ws-echo","path":"/","paths":["/","/help","/client","/ws"],"expected_flow":"open /client, connect to /ws, send ping, receive pong","candidate":"F1.0/F1.1 neutral frontdoor probe","notes":["This is not a VPN and not a generic proxy.","No upstream relay, no client config delivery, and no secrets are attached.","Use it to test a neutral managed frontdoor before any VLESS+WS+TLS candidate."]}