Instructions for an AI coding agent setting up iOS development on a Mac. The
human you're working with has never used Xcode and doesn't want to. That's
fine: Xcode.app must be installed, but after a short one-time setup it never
has to be opened. Everything runs from the terminal: xcodebuild to build,
xcrun simctl for the simulator, xcrun devicectl to install on a real
iPhone, and xcodegen to generate the project file.
Two rules drive the whole setup: