References cover each area in depth: concurrency, architecture/DI, testing, i18n, and performance.

Best practices: prefer actors over classes with locks for shared state, @Observable over ObservableObject, structured concurrency over completion handlers, String Catalogs for all user-facing text, profiling in Release (-O) builds, and value types (structs) over classes where possible.

Swift Core

Swift 6 fundamentals shared across all Apple platforms.

Agent Workflow (MANDATORY)

Before ANY implementation, use TeamCreate to spawn 3 agents:

1. fuse-ai-pilot:explore-codebase - Analyze existing Swift patterns
2. fuse-ai-pilot:research-expert - Verify latest Swift 6 docs via Context7/Exa
3. mcp__apple-docs__search_apple_docs - Check Swift concurrency patterns