{
  "created_utc": "2026-10-25T16:16:05.055544+00:00",
  "synthetic": false,
  "training_max_year": 2021,
  "calibration_and_evaluation_year": 2022,
  "folds": 5,
  "block_m": 100000,
  "buffer_m": 25000,
  "selection": "no search; frozen original XGBoost parameters, C=1, blend=0.5",
  "limitation": "Historical hyperparameters selected globally through 2021; conditional development transfer audit, not fully nested independent spatial test.",
  "history": "Past-only detections may be observed in held regions, as at deployment; no held-region outcomes enter estimator fitting.",
  "test_2023_2025_used": false
}