After the stable Xcode 26 release, use reversible build, design, data, accessibility, rollout, and observability boundaries for a production SwiftUI migration.
After the stable Swift 6.2 release, understand how default actor isolation, caller-context async execution, and @concurrent reshape incremental migration.
Build a reproducible SwiftUI Instruments experiment that separates unstable identity, expensive body work, image pipelines, invalidation, and layout costs.
Split a Swift macro into a thin plugin entry point, pure generation rules, syntax construction, and deliberate diagnostics for smaller and more stable tests.
Compare ordinary state animation, PhaseAnimator, and KeyframeAnimator, then choose the smallest model that preserves meaning, interruption, and accessibility.