eczarny/spectacle ? reverse-engineered prompt

Build me a small Mac app that helps me organize windows without using the mouse.

I want global keyboard shortcuts for common window actions like centering a window, maximizing it, snapping it to the left or right half, top or bottom half, moving it into corners, and jumping between thirds of the screen. It should also work across multiple displays, letting me move the active window to the next or previous monitor. Please add undo and redo for window moves and resizing, so I can go back if something lands in the wrong place.

The app should be able to ask for the right accessibility permission on first launch and explain why it needs it in a simple way. If a window has size limits, respect them and do the best possible fit instead of breaking the app. Make it feel lightweight and easy to use, with customizable shortcuts. If you need current Mac docs or best practices, look them up online.