Support Sapho ordering for shared arrivals

tests/fixture-semuta-overlap-child.ts

@@ -3,7 +3,7 @@ import type { Action, Game } from '../game/engine';
 import { validateAmbassadors } from '../game/ecaz-ambassadors';
 import { fremenAmbassadorMovement } from '../game/fremen-ambassador';
 import { actSemutaArrivalOverlap as act, createSemutaArrivalOverlapFixture,
-  inventory, player } from './fixture-semuta-arrival-overlap';
+  inventory, player, passArrivalOrder } from './fixture-semuta-arrival-overlap';
 
 export { act, inventory, player };
 
@@ -37,7 +37,7 @@ export type SemutaOverlapChildFixture = ReturnType<typeof createSemutaOverlapChi
 /** The real paid Guild arrival opens both original opportunities; the Fremen
  * Ambassador then moves one existing Ecaz force into that same stronghold. */
 export function openSemutaOverlapChild(f: SemutaOverlapChildFixture): Game {
-  let game = act(f.game, f.arrivalStep.actor, f.arrivalStep.action);
+  let game = passArrivalOrder(act(f.game, f.arrivalStep.actor, f.arrivalStep.action));
   assert.equal(game.pendingArrivalOverlap?.first, 'ambassador');
   const entry = game.pendingAmbassador; assert.ok(entry && entry.stage === 'offer');
   assert.equal(entry.token, f.fremenToken);