I built a GUI-powered Userscript manager for faster userscript creation!

I made Page Proxy, a Chrome and Firefox extension that serves as a userscript manager with GUI tools to help making userscript creation easier. This is my first project I've ever released. Please try it out and give feedback! Would be really appreciated. Why? I've always found messing around with userscript managers like Tampermonkey quite fun; I could fix websites and change their behavior to my liking. But it took me roughly 15 minutes to go from idea to code, then 30 minutes to an hour just to debug and polish the script. The first issue: juggling with DevTools windows, copy-pasting CSS selectors, and debugging my scripts was incredibly tedious. I'd mostly have to rely on print debugging, then I would have to reload the page every time and search through the console for errors. So I wanted a way to quickly generate CSS selectors and code. I wanted something similar to DevTools, but has integration with code and selector generation to speed up userscript development. Second of all, t