You can't hand C a Go function
C wants a bare code address; a Go function is a closure. The pattern that works ships an integer and keeps the function at home.
The architecture is a testing strategy
A third of betterglobekey is tests. In a cgo app, that number is an architectural choice, not a work ethic.
You don't need Xcode
A global event tap, an AppKit HUD, real macOS permissions — compiled by go build. The IDE was never the requirement.