TheReal1Don/GreenKnife ? reverse-engineered prompt

Build me a lightweight desktop downloader called GreenKnife that runs quietly in the background and watches my clipboard for media links. When I copy a supported link from sites like YouTube, TikTok, X, Instagram, or similar, it should detect it automatically and open a simple download window so I can grab the best available video or audio quality.

I want it to stay in the system tray most of the time, not take over the screen, and send a notification when a download finishes. It should feel fast, simple, and clean, with support for a lot of websites through yt dlp if that helps. Please make it reliable and user friendly, with sensible defaults, and look up current docs online if you need to.