code/app-youtube-music ? reverse-engineered prompt

Build me a desktop app for YouTube Music that feels native on macOS, Windows, and Linux.

I want it to open YouTube Music in a clean Electron style window, but with extra built in quality of life features like an ad blocker, a downloader, support for custom plugins, and simple theme or CSS tweaks. The app should let users enable or disable plugins from a menu, remember settings, and restart itself when a plugin needs that. It should also have a polished settings area for visual tweaks and general options, plus a way to load community themes.

Make it easy to develop and build locally, and include tests if possible. If anything about the current docs or implementation details is unclear, look up the latest docs online and follow the project’s existing style.