directory back up (parent) button + drag entry into parent to move

frontend/lib/api/warrens.ts

@@ -28,9 +28,9 @@ export async function getWarrens(): Promise<Record<string, WarrenData>> {
 export async function getWarrenDirectory(
     warrenId: string,
     path: string
-): Promise<DirectoryEntry[]> {
+): Promise<{ files: DirectoryEntry[]; parent: DirectoryEntry | null }> {
     const { data, error } = await useFetch<
-        ApiResponse<{ files: DirectoryEntry[] }>
+        ApiResponse<{ files: DirectoryEntry[]; parent: DirectoryEntry | null }>
     >(getApiUrl(`warrens/files/ls`), {
         method: 'POST',
         headers: getApiHeaders(),
@@ -44,9 +44,9 @@ export async function getWarrenDirectory(
         throw error.value?.name;
     }
 
-    const { files } = data.value.data;
+    const { files, parent } = data.value.data;
 
-    return files;
+    return { files, parent };
 }
 
 export async function createDirectory(