收口创作代理上传图标按钮

creation-agent composer 上传文档和参考图入口改用 PlatformIconButton

工作台测试断言上传入口接入公共图标按钮

补充 PlatformUiKit 收口文档和 Hermes 决策记录

src/components/creation-agent/CreationAgentWorkspace.test.tsx

@@ -75,10 +75,17 @@ test('creation agent workspace keeps initial chat progress at zero percent', ()
       onBack={() => {}}
       onSubmitText={() => {}}
       onPrimaryAction={() => {}}
+      onReferenceImageChange={() => {}}
     />,
   );
 
   const progressbar = screen.getByRole('progressbar');
+  const documentUploadButton = screen.getByRole('button', {
+    name: '上传文档',
+  });
+  const referenceUploadButton = screen.getByRole('button', {
+    name: '上传参考图',
+  });
 
   expect(progressbar.getAttribute('aria-valuenow')).toBe('0');
   expect(progressbar.getAttribute('aria-labelledby')).toBe(
@@ -90,6 +97,8 @@ test('creation agent workspace keeps initial chat progress at zero percent', ()
       .getByTestId('creation-agent-message-list')
       .closest('.platform-subpanel')?.className,
   ).toContain('rounded-[1.5rem]');
+  expect(documentUploadButton.className).toContain('platform-icon-button');
+  expect(referenceUploadButton.className).toContain('platform-icon-button');
   expect(
     (progressbar.firstElementChild as HTMLElement | null)?.style.width,
   ).toBe('0%');