{
  "demo_id": "demo_20260316_113224",
  "scenario_id": "critical_infra",
  "dataset_id": null,
  "dataset_title": null,
  "rows": [],
  "feature_keys": [],
  "target_key": "anomaly_flag",
  "summary": {
    "row_count": 0,
    "source": "none"
  }
}