fix: 전투 시뮬레이터 기본 특기 계약 복원

Ref와 같이 시나리오 defaultSpecialDomestic을 공격자와 수비자 payload에 적용한다. 기본 5병종 5x5 고정 seed Ref 차등 회귀와 API·Chromium 회귀를 추가한다.

app/game-frontend/e2e/battleSimulator.spec.ts

@@ -45,6 +45,7 @@ const readImage = async (relative: string): Promise<Buffer> => {
 
 const simulatorFormOptions = {
     world: { startYear: 190, currentYear: 205, currentMonth: 8 },
+    defaultSpecialDomestic: 'None',
     config: {
         maxTrainByWar: 120,
         maxAtmosByWar: 120,
@@ -416,7 +417,8 @@ test('operates independent/game presets, imports my general, and renders battle
     expect(fixture.prepareResponseBytes).toEqual([expect.any(Number)]);
     expect(fixture.prepareResponseBytes?.every((bytes) => bytes < 128)).toBe(true);
     expect(fixture.preparedPayloads[0]).toMatchObject({
-        attackerGeneral: { special: 'che_event_신산' },
+        attackerGeneral: { special: 'None' },
+        defenderGenerals: [{ special: 'None' }],
     });
 
     const downloadPromise = page.waitForEvent('download');
@@ -437,7 +439,8 @@ test('operates independent/game presets, imports my general, and renders battle
     await expect.poll(() => fixture.preparedPayloads.length).toBe(2);
     expect(await readBrowserWorkerResult(page, 1)).toEqual(fixture.serverResults[1]);
     expect(fixture.preparedPayloads[1]).toMatchObject({
-        attackerGeneral: { special: 'che_event_신산' },
+        attackerGeneral: { special: 'None' },
+        defenderGenerals: [{ special: 'None' }],
     });
 
     if (artifactRoot) {

app/game-frontend/src/utils/battleSimulatorTypes.ts

@@ -52,6 +52,7 @@ export type BattleSimOptions = {
     config: WarEngineConfig;
     unitSet: UnitSetDefinition;
     scenarioEffect: string | null;
+    defaultSpecialDomestic: string;
     nationTypes: Array<{ key: string; name: string; info: string }>;
     eventDomesticTraits: Array<{ key: string; name: string; info: string }>;
     warTraits: Array<{ key: string; name: string; info: string }>;

app/game-frontend/src/views/BattleSimulatorView.vue

@@ -461,7 +461,7 @@ const buildGeneralPayload = (
         personal: general.personal,
         // Ref does not expose the domestic speciality in this form. Battle requests
         // always use the scenario's default domestic speciality instead.
-        special: options.value?.eventDomesticTraits[0]?.key ?? general.special,
+        special: options.value?.defaultSpecialDomestic ?? 'None',
         special2: general.special2,
         crew: general.crew,
         crewtype: general.crewtype,