Dropover-Mac-W/Dropover-Mac ? reverse-engineered prompt

Build me a Mac app called Dropover that makes dragging files around a lot easier.

I want a small floating shelf that pops up when I shake the mouse or trigger it quickly, so I can drop files onto it from different Finder windows and keep collecting them there. The shelf should stay visible while I keep working, and then I can drag the whole group somewhere else in one move, like into an email, another folder, or the Share Sheet.

It should also let me do quick things with files on the shelf, like copy the file path, open them in another app, and make shareable links when possible. I’d like a simple menu bar icon for access, plus a few settings for things like shelf size, opacity, and how sensitive the shake gesture is.

Make it feel polished and very Mac like. If you need to check current macOS docs or behavior details, go ahead and look them up.