Apple App Quality

This skill should be used when the user asks to "write tests", "add unit tests", "implement UI tests", "analyze test coverage", "use XCTest", "use Swift Testing", "test SwiftUI views", or needs iOS/macOS testing guidance. Provides testing strategies, XCTest and Swift Testing framework patterns, and SwiftUI-specific testing techniques.

This skill should be used when the user asks to "review code", "analyze architecture", "assess code quality", "audit the codebase", "review PR", or needs read-only code analysis. Provides structured review checklist for organization, error handling, performance, security, and test coverage.

Refactor and review SwiftUI view files for consistent structure, dependency injection, and Observation usage. Use when asked to clean up a SwiftUI view’s layout/ordering, handle view models safely (non-optional when possible), or standardize how dependencies and @Observable state are initialized and passed.

This skill should be used when the user asks to "audit this code", "deep analysis before security review", "build architectural context", "line-by-line code review", or needs ultra-granular analysis before vulnerability discovery. Provides structured context-building methodology with First Principles, 5 Whys, 5 Hows micro-analysis patterns.