Search Skills

Provides thread-safe concurrency primitives and best practices for Swift, including Mutex, OSAllocatedUnfairLock, and Atomic types, with guidance on lock usage and deadlock prevention.

Diagnoses and resolves battery drain and overheating issues in iOS/iPadOS apps through systematic power profiling and subsystem analysis.

Advanced SQLite patterns for complex data processing including recursive CTEs, custom aggregates, and JSON/string aggregation.

Systematic debugging workflows for SwiftUI views addressing complex state dependencies, unexpected update patterns, and Instruments integration.

Provides support for iOS testing including unit, UI, and async tests with Swift and XCTest.

Diagnoses and resolves common camera capture issues in mobile applications, including preview rotation, freezing, and AVCaptureSession errors.

Provides comprehensive solutions for Swift Codable protocol usage, including JSON encoding/decoding, custom serialization, and error resolution for Swift 6.x.

Provides a testing-first implementation for in-app purchases, subscriptions, and transaction handling using StoreKit 2 architecture.

Comprehensive CLI reference for automating Instruments profiling, headless performance analysis, and CI/CD integration with xctrace.

Enables raw SQL query execution, complex joins, and reactive database operations with GRDB in iOS/macOS apps, featuring performance profiling and direct SQLite access.

Comprehensive diagnostics for iOS/macOS accessibility issues, ensuring WCAG compliance and App Store Review readiness.

Diagnoses Metal porting issues including rendering artifacts, shader errors, and GPU crashes in graphics applications.

Comprehensive reference for iOS background task APIs including BGTaskScheduler, BGAppRefreshTask, and background URLSession with WWDC code examples.

Comprehensive API reference for implementing iOS app extensions, widgets, Live Activities, and Control Center controls using WidgetKit, ActivityKit, and App Groups.

Provides decision trees and deep workflows for selecting Apple Instruments tools to diagnose performance issues like slowness, memory leaks, and battery drain.

Symptom-based decision trees for diagnosing phone energy issues (battery, heat, drain, cellular) with time-cost analysis for each path.

Comprehensive reference for implementing and debugging SwiftUI animations, including VectorArithmetic, @Animatable macro, and UIKit/AppKit bridging, covering iOS 13 to 26.

Diagnoses and optimizes iOS app performance issues including memory leaks, retain cycles, and battery drain using Instruments workflows.

Configures UI test recordings in Xcode 26 for enhanced stability and multi-configuration replay, aligned with WWDC 2025 best practices.

Diagnoses and resolves retain cycles in Objective-C blocks through systematic weak-strong pattern analysis, preventing memory leaks and crashes.

Provides systematic diagnostics for network issues including timeouts, TLS handshake failures, and connection drops in production environments, enabling rapid crisis resolution.

Automates triage of TestFlight crash reports, symbolication, and feedback analysis for iOS beta testing.

Provides computer vision utilities for subject segmentation, object isolation, OCR, and document scanning via VisionKit APIs.

Provides implementation guidance for iOS App Shortcuts API (Siri/Spotlight) including configuration, suggested phrases, and debugging for iOS 16+.