Support mixed current-fact and shipment Truthtrance questions

tests/fixture-mixed-shipment.ts

@@ -0,0 +1,17 @@
+import {applyAction,type Game} from '../game/engine';
+import type {MixedShipmentExpression} from '../game/mixed-shipment-question';
+import {compoundShipmentGame,openCompoundShipmentQuestion} from './fixture-compound-shipment';
+
+/** Genuine base setup, then the existing labelled conserved shipment position. */
+export function mixedShipmentGame(): Game {
+  return compoundShipmentGame();
+}
+export function askMixedShipment(game: Game, mixed: MixedShipmentExpression): Game {
+  return applyAction(openCompoundShipmentQuestion(game),game.players[1].id,{
+    type:'truthAsk',question:{kind:'mixedShipment',target:game.players[0].id,mixed},
+  });
+}
+export function mixedSpiceShipment(kind:'and'|'or',compare:'gte'|'lte',value:number): MixedShipmentExpression {
+  return {kind,terms:[{kind:'fact',fact:{kind:'spice',compare,value}},
+    {kind:'shipment',territory:'arrakeen',minimum:4}]};
+}