SwiftUI Best Practices Enforcer

Fix SwiftUI anti-patterns:

1. @State for ViewModels: Move to ViewModel property

2. Heavy View body: Extract to ViewModel computed property

3. Missing @MainActor: Add to ViewModels

4. Property wrapper mistakes:

   • @Observable → @State or @Bindable
   • ObservableObject → @StateObject or @ObservedObject

5. Leavn patterns:

   • ViewModels: @Observable + @MainActor
   • Services: Protocol-based, injected via DIContainer
   • State: In ViewModel, not View
   • Bindings: Use @Bindable for @Observable types

Use when: SwiftUI issues, performance problems, architecture violations