Feat: 폴더 관리를 위한 스토어 추가

frontend/src/stores/useFolderStore.ts

@@ -0,0 +1,22 @@
+import { create } from 'zustand';
+import { FolderResponseDTO } from '@/types';
+
+interface FolderState {
+  folder: FolderResponseDTO | null;
+  loading: boolean;
+  error: string | null;
+  setFolder: (folder: FolderResponseDTO | null) => void;
+  setLoading: (loading: boolean) => void;
+  setError: (error: string | null) => void;
+}
+
+const useFolderStore = create<FolderState>((set) => ({
+  folder: null,
+  loading: false,
+  error: null,
+  setFolder: (folder) => set({ folder }),
+  setLoading: (loading) => set({ loading }),
+  setError: (error) => set({ error }),
+}));
+
+export default useFolderStore;