{"message":"🚀 API CitasPro Barbería está activa (Multi-Sucursal)","status":"online","endpoints":{"health":"/api/health","branches":"/api/branches","services":"/api/services","staff":"/api/staff?branch_id=br-1","availability":"/api/availability?date=YYYY-MM-DD&staff_id=st-1&duration_min=30","appointments":"/api/appointments"}}