{"status":"ok","service":"LangGPT Node.js Backend Server","message":"LangGPT Backend API is live and publicly accessible.","endpoints":{"health":"/health","diagnostics_and_errors":"/error","chat":"/api/chat","conversations":"/api/conversations","context":"/api/context","auth":"/api/auth","rag":"/api/rag","voice":"/api/voice"},"timestamp":"2026-10-07T03:36:19.566Z"}