iOS Native Development (SwiftUI + Platform APIs) References : swiftui-architecture.md for App lifecycle, Scene/WindowGroup, navigation (NavigationStack with type-safe paths, NavigationSplitView), state management with (Swift 5.9+ replacement for ObservableObject), focus, sheets/alerts. secure-storage.md for Keychain Services deep dive (access groups, biometric SAC, iCloud sync, key migration), Secure Enclave key generation, attestation. system-integration.md for Background Tasks (BGTaskScheduler), Universal Links (associated domains), App Groups, Share Extensions, Privacy Manifest, StoreKit 2…