Machina C-MAPSS RUL Baseline
ExtraTrees remaining-useful-life estimator trained on NASA C-MAPSS FD001.
The model expects the feature order recorded in metadata.json, including
engine cycle, normalized cycle fraction, and non-constant sensor channels.
This is a research baseline. Official FD001 test MAE is recorded in
metadata.json; validate on the target equipment before using it for
maintenance decisions.