{
  "selection_basis": "most rolling-fold wins, then median fold RMSE and dispersion; selection completed before final test was opened",
  "selected_model": "persistence",
  "selected_window": 3,
  "fold_wins": {
    "persistence": 2,
    "lstm": 1
  },
  "rolling_rmse_median": 434.1244725793602,
  "rolling_rmse_mean": 30585.724746182477,
  "rolling_rmse_std": 52451.81362586529,
  "claim_temporal_learning_improved": false,
  "lstm_status": "challenger only; not accepted as champion",
  "physics_violation_rate": null,
  "physics_violation_reason": "methane fraction and substrate VS required for a methane-yield bound are absent",
  "final_test_status": "opened once after architecture selection; see final_test_metrics.csv"
}