fix: parent candidacy

src/client/sidebar.jsx

@@ -67,6 +67,7 @@ const Sidebar = () => {
   return (
     <div className="sidebar">
       <SortableTree
+        canNodeHaveChildren={(node) => !node.uri}
         generateNodeProps={({node}) => ({
           onClick: () => {
             if (node.uri) {
@@ -86,9 +87,9 @@ const Sidebar = () => {
             }
           },
         })}
-        treeData={treeData}
         onChange={setTreeData}
         theme={FileExplorerTheme}
+        treeData={treeData}
       />
     </div>
   );