Anujsjm1405/Slack-Bot ? reverse-engineered prompt

Build me a Slack bot backend that takes a website URL from a Slack command, sends it to Google PageSpeed Insights, and replies back in Slack with a clean, easy to read performance report.

I want it to be built with Node.js and Express, and set up in a way that feels ready for real use, so use environment based config and keep the code organized. The bot should handle the request, call the PageSpeed Insights API, and format the results into something useful for people in Slack, with the main performance details shown clearly.

If it makes sense, include support for the common PageSpeed categories like Performance, SEO, Accessibility, and Best Practices, and make the response readable instead of dumping raw API data. Keep it simple and practical, and if you need to look up the current Slack or PageSpeed docs online, go for it.