Puppeteer Real Browser MCP Server

Using the puppeteer-test-server MCP server, please perform a complete browser lifecycle test: 1. Initialize a browser with headless: true 2. Navigate to https://httpbin.org/user-agent 3. Get the page content and verify it contains user-agent information 4. Take a screenshot 5. Navigate to https://example.com 6. Take another screenshot 7. Close the browser Report success/failure for each step and note any errors or retry attempts.