
Swift modern concurrency with async/await, Task, Actor, Swift 6 strict mode, Sendable, and structured concurrency patterns.
Use this skill for semantic codebase analysis and mapping local code dependencies. It provides a semantic engine to query local code context. Use when asking "where is X implemented", "what depends on Y", "find all usages of Z", "what breaks if I change this", or any question about your local project's code structure, dependencies, or impact analysis.
Swift language structures including collections, optionals, closures, generics, control flow, and core language features.
Use this skill for expert Swift/iOS architectural guidance and best practices. It provides a senior mentor layer to validate patterns before implementation. Use when asking "how should I architect X", "what are tradeoffs of Y", "SwiftUI best practices", "Swift concurrency patterns", or any general Swift/iOS design question — even if they don't explicitly mention "Swift" or "iOS" but describe mobile app architecture concerns.
Swift Combine framework for reactive programming, handling asynchronous events with publishers, subscribers, and operators.
Use this skill for semantic runtime debugging and state analysis. It provides LLDB plugins to bridge code context with runtime state. Use when debugging crashes, inspecting variable state at runtime, setting semantic breakpoints, or analyzing why code behaves differently than expected — even if they don't mention "LLDB" or "debugger".
Use this skill for architecture documentation and generating high-level system overviews. It generates an ARCHITECTURE.md for your project. Use when onboarding to a new codebase, documenting project structure, creating system overviews, or understanding how components connect — even if they don't mention "architecture" but describe understanding or documenting a project's structure.
Use this skill for PR safety and risk analysis. It analyzes the risk and blast radius of a PR using git diff. Use before committing changes, reviewing pull requests, or assessing the impact of code modifications — even if they don't mention "review" but describe checking change safety or understanding what a diff affects.
SwiftUI framework concepts including property wrappers, state management, and reactive UI patterns.
Use this skill when you need expert Swift/iOS architectural guidance, semantic codebase analysis, or PR impact reviews. It provides a senior mentor layer for Swift (SwiftUI, UIKit, Combine, Concurrency) and a semantic engine to query local code context. Trigger this skill to: 1. Validate architectural patterns before implementation using 'ask'. 2. Find and map local code dependencies using 'context'. 3. Analyze the risk and blast radius of a PR using 'review'. 4. Generate system overviews for onboarding using 'onboard'. 5. Troubleshoot runtime crashes with semantic LLDB tools using 'debug'. Activate even if specific keywords are missing but the intent is improving Swift code quality or understanding project structure.
Identify unused code in Swift projects using the Swift compiler's index store. Detects unused classes, structs, functions, properties, protocols, and more. Use when cleaning up dead code, auditing codebase health, preparing for refactoring, or reviewing PR scope — even if they don't mention "index store" or "dead code" but describe removing unused or unreachable code.
Swift Package Manager (SPM) for dependency management, package creation, and modular code organization.
Swift style guidelines covering naming conventions, code organization, and best practices for writing idiomatic Swift code.
Swift Testing framework for unit tests, integration tests, and async testing with modern syntax.