craciu25yt/lyeh ? reverse-engineered prompt

Build me a userscript that improves the Genius website with a cleaner, darker look and a more polished experience.

I want it to add a glassy dark mode style across the site, plus helpful features like YouTube support, synced lyrics, built in song and album artwork lookup, a custom profile gradient that other users can see, a contribution heatmap, and a settings panel where people can tweak things. It should feel stable and easy to use on Genius, not like a separate app.

Also add a few useful editor shortcuts, like making text italic or bold, duplicating a line, and deleting a line with hotkeys. Make sure it can be installed through a userscript manager like Tampermonkey or Violentmonkey, and give me a simple build setup so I can run it locally and generate the final script. If you need to check current docs online for any tooling details, go ahead.