delivery
Fires when an upstream-forwarded request reaches Delivered back at this cross-dock. Recovers the parked original via SupplyChainModel.Demand.forwardedFrom, records the wait-time stat, increments the counter, completes the original (fill + dispatch via demandCarrier), and terminates the forwarded request at Stored.
Replaces the previous ksl.modeling.supplychain.flow.DemandForwarder's onUpstreamDelivered callback. Lifecycle is now driven by the framework's universal Delivered → endpoint dispatch.