Asdfghjkl: a keyboard-first mouse controller for macOS

I built a new macOS tool in Swift called Asdfghjkl that lets you avoid the trackpad and control the mouse using the keyboard instead. It overlays a grid on the active screens, maps each cell to a letter, and keeps subdividing as you type until the pointer lands where you want it. This post covers the architecture, the ergonomic choices, and some of the things I didn't bother with. Keyboard-first…