Swiftui Patterns

If you're building SwiftUI apps targeting iOS 17+, this gives Claude the modern patterns: @Observable instead of ObservableObject, @Bindable for two-way binding, and .task for async work that auto-cancels. It includes a solid decision table for when to use @State vs @Bindable vs @Environment, plus reference guides for MVVM architecture, NavigationStack, UIKit interop, and accessibility. The "Common Mistakes" section is worth the price of admission alone, calling out things like NavigationPath corruption and UIKit memory leaks. Honestly just a well-organized cheat sheet for the iOS 17 SwiftUI rewrite that saves you from Stack Overflow rabbit holes.