foamify/shakepin ? reverse-engineered prompt

Build me a small desktop app that works like a Dropover style file shelf, where I can drag files over it, keep them floating on screen, and drop them into other apps whenever I want.

I want it to be simple and fast, with a clean little window or overlay for collecting files. It should let me pin files so they stay there, compress images and videos, and quickly zip up selected files. Make it feel like a handy everyday utility with a bit of playful personality, not a heavy file manager.

It should run on desktop, especially macOS and Windows, and be easy to install and use. If you need to check current docs or best practices for any desktop or Flutter behavior, look them up online. Keep the experience polished, lightweight, and ready for real use.