googlechrome/lighthouse ? reverse-engineered prompt

Build me a web app auditing tool like Lighthouse that checks a page for performance, accessibility, SEO, and general best practices.

I want to be able to give it a URL, have it open the page in a browser, run the checks automatically, and then show me a clear report with a score, the main problems it found, and simple tips for fixing them. It should also be able to run from the command line for automation, and save the results as an HTML report, with JSON and CSV options too if that is easy. Please make the report easy to read for someone who is not a developer expert, but still detailed enough for debugging.

Use the existing project structure if it helps, and look up current docs online if you need to. Make sure it works well with modern Chrome and Node, and keep the experience polished and reliable.