This skill should be used when the user says "swift", "arness code swift", "quick change", "small change", "just do this", "quick feature", "quick implementation", "swift fix", "implement this quickly", "add this quickly", "simple change", "just implement this", "arn-code-swift", "swift mode", "quick task", or wants a lightweight, pattern-aware implementation for a small feature or enhancement (1-8 files) without going through the full Arness pipeline. Bridges the gap between raw Claude Code and the full feature-spec/plan pipeline. Includes architectural assessment, targeted testing, and pattern compliance review.