fix(wbs-ux): register AllCommunityModule in AG Grid v36 and guard against 502 bad gateway error

src/frontend/src/main.ts

@@ -9,9 +9,13 @@ import { vQuantKeyboardNav } from './directives/vQuantKeyboardNav'
 import './assets/douzone.css'
 import 'ag-grid-community/styles/ag-grid.css'
 import 'ag-grid-community/styles/ag-theme-alpine.css'
+import { ModuleRegistry, AllCommunityModule } from 'ag-grid-community'
+
+ModuleRegistry.registerModules([AllCommunityModule])
 
 const app = createApp(App)
 
+
 app.use(createPinia())
 app.use(router)
 app.use(PrimeVue, {

src/frontend/src/views/templates/FactorParamDetailLayout.vue

@@ -19,8 +19,12 @@ const isSaving = ref(false);
 const loadFactors = async () => {
   try {
     const res = await fetch('/api/admin/factors');
+    if (!res.ok) {
+      throw new Error(`HTTP_${res.status}_BAD_GATEWAY`);
+    }
     factors.value = await res.json();
   } catch (err) {
+    console.warn('⚠️ 백엔드 API 미응답 (502 Gateway Fallback 적용):', err);
     // 실 데이터 폴백 예제
     factors.value = [
       { 
@@ -32,6 +36,7 @@ const loadFactors = async () => {
   }
 };
 
+
 const selectFactor = (item: FactorVersion) => {
   selectedFactor.value = JSON.parse(JSON.stringify(item));
 };