[sduff]

Oh wow, I've just realised your that Steven Degutis, author of Mjolnir, of which Hammerspoon is based!!!

Any reason you've built a stand-alone app for this, given Mjolnir (and Hammerspoon) can do this pretty easily?

[_sdegutis]

Coincidentally I answered this in a sibling comment at the same time you asked. Long story short this doesn’t require configuration and is pretty lightweight.