Restore Agent workspace and add platform pixel avatars

tests/e2e/cloud-agent-channels.spec.ts

@@ -81,7 +81,7 @@ test('own WeChat conversation approval and generated PPT delivery in the desktop
     });
     await page.goto(applicationUrl);
     await page.getByTestId('ai-module-option-cloud_agents').click();
-    await page.getByRole('button', { name: /我的创作助手/ }).click();
+    await page.getByRole('article', { name: '我的创作助手', exact: true }).getByRole('button', { name: '和它聊聊', exact: true }).click();
     await page.getByRole('button', { name: '微信对话', exact: true }).click();
     const own = page.getByRole('region', { name: '微信会话', exact: true });
     await expect(own.getByTestId('wechat-run-status')).toContainText('任务状态：等待你的确认');