{
  "app": "ST_Log_Sonic (Ts)",
  "model_file": "ts_model.joblib",
  "features": ["WOB (klbf)", "Torque (kft.lbf)", "SPP (psi)", "RPM (1/min)", "ROP (ft/h)", "Flow Rate (gpm)"],
  "target": "Ts (us/ft_Actual)",
  "pred_col": "Ts_Pred",
  "versions": {
    "numpy": "your_numpy_version",
    "scikit_learn": "your_sklearn_version"
  },
  "notes": "Ts in µs/ft. Workbook headers are normalized to model’s feature names."
}