- Add required name/description properties and @Generable to RecipeSearchTool
- Fix missing argument label in session.respond(to:) call
- Remove non-existent .scrollExtensionMode API, replace with correct guidance
- Change PhotoProcessor from struct to class for cache mutation support
- Fix method name mismatch in @concurrent example caller
Add skill covering Swift 6.2 Approachable Concurrency model including
single-threaded defaults, @concurrent for explicit background offloading,
isolated conformances, and MainActor default inference mode.