补充 UI 编辑器交互回归测试

从实际节点事件目标验证删除快捷键

验证 portal 右键菜单启用后会执行操作并关闭

apps/ai-game-creator-shell/tests/uiEditorPage.test.ts

@@ -511,7 +511,7 @@ describe('UiEditorPage', () => {
 
     const child = await screen.findByText('page-child');
     fireEvent.click(child);
-    fireEvent.keyDown(window, { key: 'Delete' });
+    fireEvent.keyDown(child, { key: 'Delete' });
 
     await waitFor(() => expect(screen.queryByText('page-child')).toBeNull());
   });

apps/ai-game-creator-shell/tests/uiEditorPreview.test.tsx

@@ -152,6 +152,27 @@ describe('UI tree preview visibility', () => {
     expect(onClose).toHaveBeenCalledTimes(1);
   });
 
+  it('runs an enabled context-menu action from its portal', () => {
+    const onClose = vi.fn();
+    const onInsertChild = vi.fn();
+    render(
+      <UiNodeContextMenu
+        nodeId="node-1"
+        position={{ x: 20, y: 24 }}
+        isPageRoot
+        onClose={onClose}
+        onInsertChild={onInsertChild}
+        onInsertSibling={vi.fn()}
+        onDelete={vi.fn()}
+      />,
+    );
+
+    fireEvent.click(screen.getByRole('menuitem', { name: '新增子节点' }));
+
+    expect(onInsertChild).toHaveBeenCalledWith('node-1');
+    expect(onClose).toHaveBeenCalledTimes(1);
+  });
+
   it('maps a Godot HBoxContainer to preview CSS and disables child free-transform handles', () => {
     const hboxTree: UITree = {
       src_ui_design: 'page',