feat: 重构 Skill 管理与编辑工作台

- 统一列表、分类、新建与详情页的产品交互

- 提供 Markdown 实时编辑、源码与脚本资源工作台

- 实现能力自动保存、导入导出及完整状态反馈

easyflow-ui-admin/app/src/components/page/PageData.test.ts

@@ -0,0 +1,28 @@
+import { flushPromises, mount } from '@vue/test-utils';
+
+import { describe, expect, it, vi } from 'vitest';
+
+import PageData from './PageData.vue';
+
+describe('page data recovery', () => {
+  it('shows a retry action after a page request fails', async () => {
+    const get = vi
+      .fn()
+      .mockRejectedValueOnce(new Error('network unavailable'))
+      .mockResolvedValueOnce({ data: { records: [], totalRow: 0 } });
+    const wrapper = mount(PageData, {
+      global: {
+        directives: { loading: {} },
+      },
+      props: { pageUrl: '/page', requestClient: { get } },
+    });
+
+    await flushPromises();
+    expect(wrapper.text()).toContain('数据加载失败，请重试');
+
+    await wrapper.get('button').trigger('click');
+    await flushPromises();
+    expect(get).toHaveBeenCalledTimes(2);
+    expect(wrapper.text()).not.toContain('数据加载失败，请重试');
+  });
+});