appkit-app-inspector

Use when learning how a running macOS app is built by inspecting its live view tree with uitool — reading real NSView subclasses, frames, fonts, CALayer facts, and Auto Layout constraints from another process and translating them into your own AppKit code. Covers the two injection postures (cooperative on a stock Mac vs unrestricted dev-box), the doctor/signing precondition gate, the filter→drill query loop, and turning runtime findings into a clean public-API recipe.