{
  "returncode": 0,
  "stdout": "{\n  \"batch_id\": \"20260916-medium4-sixteen-batch\",\n  \"groups\": 1,\n  \"plan_hash\": \"307d616c448d91448983aca0c97cbd8217656388472a4bfd65e80318d06b2a32\",\n  \"status\": \"prepared\"\n}\n",
  "stderr": ""
}