Merge branch 'feature/screen-management' of http://39.117.244.52:3000/kjs/ERP-node into feature/screen-management

- main 태그의 overflow-hidden을 overflow-auto로 변경하여 스크롤 복구
- 모든 페이지에서 스크롤이 정상 작동하도록 수정

frontend/components/layout/AppLayout.tsx

@@ -459,7 +459,7 @@ function AppLayoutInner({ children }: AppLayoutProps) {
         </aside>
 
         {/* 가운데 컨텐츠 영역 - 스크롤 가능 */}
-        <main className="h-[calc(100vh-3.5rem)] min-w-0 flex-1 overflow-hidden bg-white">
+        <main className="h-[calc(100vh-3.5rem)] min-w-0 flex-1 overflow-auto bg-white">
           <div className="h-full w-full p-4">{children}</div>
         </main>
       </div>