0-1000 calibration
Engine Calibration
Run admin-driven, chunked, resumable calibration jobs for the 2.0.0 rating engines. Calibration commits write mu/sigma/ERA_CAP/k for each metric; until commit, no scoring uses the new version.
Active job
Per-metric running stats
Spot-check
Adjust caps / k and re-run spot-check (no rescan needed)
Mu and sigma are already computed for this job. You can change caps and k and re-score the anchors without scanning 110k seasons again.
Job history
1.x engine wipe
After both 2.0.0 engines are committed and verified, delete all cached 1.x engine data. Source stats, parks, and players are untouched.