refactor: LNB 동작 수정

packages/common/components/src/ui/lnb/index.tsx

@@ -40,8 +40,7 @@ export function LNB({
     enabled: !viewOnly,
   });
 
-  const [openMenuIds, setOpenMenuIds] = useState<number[]>([]);
-  const userClosedMenusRef = useRef(new Set());
+  const [defaultOpenMenuIds, setDefaultOpenMenuIds] = useState<number[]>([]);
   const prevPathRef = useRef(currentPath);
 
   function isPathMatched(path: string) {
@@ -70,14 +69,13 @@ export function LNB({
     findMatchedMenus(menuList);
 
     if (matchedMenuIds.length > 0) {
-      const filteredIds = matchedMenuIds.filter(
-        (id) => !userClosedMenusRef.current.has(id),
-      );
-      setOpenMenuIds((prev) => [...new Set([...prev, ...filteredIds])]);
+      setDefaultOpenMenuIds((prev) => [
+        ...new Set([...prev, ...matchedMenuIds]),
+      ]);
     }
 
     if (prevPathRef.current !== currentPath) {
-      setOpenMenuIds(matchedMenuIds);
+      setDefaultOpenMenuIds(matchedMenuIds);
       prevPathRef.current = currentPath;
     }
   }, [menuList, currentPath]);
@@ -133,29 +131,11 @@ export function LNB({
   }
 
   function MenuGroup({ item }: { item: MenuItem }) {
-    const { open: isSidebarOpen, setOpen } = useSidebar();
-    const isOpen = openMenuIds.includes(item.menuCd);
-
-    const handleOpenChange = (open: boolean) => {
-      if (!isSidebarOpen) setOpen(true);
-      if (open) {
-        // 열 때는 부모들도 함께 열기
-        if (!openMenuIds.includes(item.menuCd)) {
-          const parentIds = getParentIds(item.menuCd)(menuList ?? []);
-          setOpenMenuIds((prev) => [...prev, ...parentIds, item.menuCd]);
-        }
-        userClosedMenusRef.current.delete(item.menuCd);
-      } else {
-        // 닫을 때는 현재 메뉴만 닫기
-        setOpenMenuIds((prev) => prev.filter((id) => id !== item.menuCd));
-        userClosedMenusRef.current.add(item.menuCd);
-      }
-    };
+    const { open: isSidebarOpen } = useSidebar();
 
     return (
       <Collapsible
-        open={isOpen}
-        onOpenChange={handleOpenChange}
+        defaultOpen={defaultOpenMenuIds.includes(item.menuCd)}
         className="group/collapsible"
       >
         <SidebarMenuItem>