{
  "feature_cols": [
    "vdc_mean",
    "vdc_std",
    "pdc_mean",
    "pdc_std",
    "pdc_delta",
    "pdc_slope",
    "efficiency_norm"
  ],
  "window": 50,
  "seq_len": 30,
  "downsample": 10,
  "failure_horizon_days": 30,
  "design_life_days": 10958
}