收口前端平台组件库能力

新增 PlatformUiKit 通用弹窗、按钮、状态、空态、媒体、表单和标签等公共组件
迁移结果页、创作工作台、认证入口、RPG 暗色面板和运行态弹窗的重复 UI chrome
补充组件测试、页面回归测试、技术文档和 Hermes 共享决策记录

src/components/platform-entry/PlatformFeedbackView.test.tsx

@@ -31,7 +31,21 @@ test('PlatformFeedbackView renders reference feedback fields', () => {
   expect(screen.getByText('上传凭证')).toBeTruthy();
   expect(screen.getByLabelText('联系电话')).toBeTruthy();
   expect(screen.getByRole('button', { name: '提交' })).toBeTruthy();
-  expect(screen.getByRole('button', { name: '查看反馈与投诉记录' })).toBeTruthy();
+  expect(
+    screen.getByRole('button', { name: '查看反馈与投诉记录' }),
+  ).toBeTruthy();
+
+  const descriptionPanel = screen.getByLabelText('问题描述').closest('section');
+  const evidencePanel = screen
+    .getByText('上传凭证(提供问题截图)')
+    .closest('section');
+  const phonePanel = screen.getByLabelText('联系电话').closest('section');
+
+  for (const panel of [descriptionPanel, evidencePanel, phonePanel]) {
+    expect(panel?.className).toContain('platform-subpanel');
+    expect(panel?.className).toContain('rounded-[1.25rem]');
+    expect(panel?.className).toContain('p-4');
+  }
 });
 
 test('PlatformFeedbackView validates minimum description length before submit', () => {
@@ -73,9 +87,12 @@ test('PlatformFeedbackView previews image data urls and submits evidence items',
   render(<PlatformFeedbackView onBack={vi.fn()} onSubmit={onSubmit} />);
 
   const file = new File(['feedback'], 'preview.png', { type: 'image/png' });
-  fireEvent.change(document.querySelector('input[type="file"]') as HTMLInputElement, {
-    target: { files: [file] },
-  });
+  fireEvent.change(
+    document.querySelector('input[type="file"]') as HTMLInputElement,
+    {
+      target: { files: [file] },
+    },
+  );
 
   const preview = await screen.findByAltText('反馈凭证预览');
   expect(preview.getAttribute('src')).toBe(