Support Basic allied No-Field transit

game/allied-separation.ts

@@ -13,6 +13,8 @@ export type BasicAlliedShipment = Readonly<{
   turn: number;
   territory: string;
   baseline: Readonly<{ normal: number; elite: number }>;
+  /** Private token identity for a newly shipped concealed visitor. */
+  noField?: string;
 }>;
 
 type ShipmentContext = Readonly<{