Swift Concurrency Patterns Comprehensive guide for Swift concurrency covering async/await, structured concurrency, actors, and the Swift 6.2 "Approachable Concurrency" features. Focuses on patterns that prevent data races and common mistakes that cause crashes. When This Skill Activates - User has data race errors or actor isolation compiler errors - User is migrating to Swift 6 strict concurrency - User asks about async/await, actors, Sendable, TaskGroup, or MainActor - User needs to bridge legacy completion-handler APIs to async/await - User is working with Swift 6.2 features (@concurrent,…