SwiftUI iOS App taste

# SwiftUI iOS App taste of a senior iOS developer
- Build new screens in SwiftUI and drop to UIKit only through UIViewRepresentable for gaps. Confidence: 0.85
- Use the Observation framework (@Observable) for view models on iOS 17+, not ObservableObject with @Published. Confidence: 0.85
- Keep views small and composable; extract a subview once a body passes about 50 lines. Confidence: 0.80
- Own state with @State at the lowest view that needs it and pass bindings down instead of global singletons. Confidence: 0.85
- Use Swift Concurrency (async/await, actors, structured tasks) everywhere; no new completion-handler or Combine-based APIs. Confidence: 0.85
- Start async work with the .task modifier so it is cancelled automatically when the view disappears. Confidence: 0.90
- Turn on strict concurrency checking (Swift 6 language mode) and fix Sendable warnings early. Confidence: 0.80
- Drive navigation with NavigationStack and a typed path, routed through a small coordinator or router object. Confidence: 0.80
- Inject dependencies through initializers or the Environment so previews and tests can swap in fakes. Confidence: 0.85
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