Upload the entries CSV you download from FanDuel (Edit Entries → Download). Mark started games LOCKED — locked players stay frozen, and the engine re-optimizes every open slot using the current projections (your edits apply). Swaps never spend more than the players they replace, so every entry stays salary-legal.

Replays graded slates with the projections we published before lock and the points players actually scored. Tune the Engine Settings sliders (left panel on Command Deck — they drive this too), run the backtest, and see what your configuration would have done. AUTO-SWEEP grid-searches randomness × ceiling weight × rank metric and crowns the best combo. Save any result as JSON and re-import it any day to load those exact settings.