CharlesWiltgen

Use when writing unit tests, adopting Swift Testing framework, making tests run faster without simulator, architecting code for…

Use when working with SwiftData - @Model definitions, @Query in SwiftUI, @Relationship macros, ModelContext patterns, CloudKit…

Use when the user mentions SwiftData review, @Model issues, SwiftData migration safety, or SwiftData performance checking.

Use when creating SwiftData custom schema migrations with VersionedSchema and SchemaMigrationPlan - property type changes, relationship…

Use when SwiftData migrations crash, fail to preserve relationships, lose data, or work in simulator but fail on device - systematic…

Use when building, fixing, or improving ANY SwiftUI UI — views, navigation, layout, animations, performance, architecture, gestures…

Use when implementing iOS 26 SwiftUI features - covers Liquid Glass design system, performance improvements, @Animatable macro, 3D spatial…

Use when layouts need to adapt to different screen sizes, iPad multitasking, or iOS 26 free-form windows — decision trees for ViewThatFits…

Use when implementing SwiftUI animations, understanding VectorArithmetic, using @Animatable macro, zoom transitions, UIKit/AppKit…

Use when separating logic from SwiftUI views, choosing architecture patterns, refactoring view files, or asking 'where should this code…

Use when the user mentions SwiftUI architecture review, separation of concerns, testability issues, or "logic in view" problems.

Reference — SwiftUI stacks, grids, outlines, and scroll enhancements through iOS 26