Support legacy CreateAdminNPC no-op

app/game-engine/src/turn/monthlyCreateAdminNpcAction.ts

@@ -0,0 +1,5 @@
+import type { MonthlyEventActionHandler } from './monthlyEventHandler.js';
+
+// 레거시 CreateAdminNPC::run()은 [class, "NYI"]만 반환하고 어떤 상태도
+// 변경하지 않는다. 새 관리자 NPC를 임의로 만들지 않고 no-op 계약을 보존한다.
+export const createCreateAdminNpcHandler = (): MonthlyEventActionHandler => () => undefined;

app/game-engine/src/turn/turnDaemon.ts

@@ -50,6 +50,7 @@ import { createUpdateCitySupplyHandler } from './monthlyCitySupplyAction.js';
 import { createUpdateNationLevelHandler } from './monthlyNationLevelAction.js';
 import { createProcessSemiAnnualHandler } from './monthlySemiAnnualAction.js';
 import { createProcessWarIncomeHandler } from './monthlyWarIncomeAction.js';
+import { createCreateAdminNpcHandler } from './monthlyCreateAdminNpcAction.js';
 import { DatabaseTurnDaemonLease, TurnDaemonLeaseUnavailableError } from '../lifecycle/databaseTurnDaemonLease.js';
 
 export interface TurnDaemonRuntimeOptions {
@@ -217,6 +218,7 @@ const createTurnDaemonRuntimeWithLease = async (
             nationTraits: nationTraitMap,
         })
     );
+    eventActions.set('CreateAdminNPC', createCreateAdminNpcHandler());
     if (reservedTurnStoreHandle) {
         eventActions.set(
             'UpdateNationLevel',