{"status":"ok","message":"HealthVault247 Backend API Server is running","timestamp":"2026-04-14T14:31:14.607Z","environment":"production","port":"3000","endpoints":["GET /api/heartbeat","GET /api/system/status","POST /api/auth/login","GET /api/departments","GET /api/states","GET /api/cities","GET /api/specialties","GET /api/doctors","POST /api/doctors"]}