TDD Refactor Guard

A safety gate that runs before any AI-assisted refactoring. Ensures tests exist to catch regressions. If coverage is insufficient, generates characterization tests first.

When This Skill Activates

Use this skill when the user:

• Says "refactor this" or "clean this up"
• Wants AI to "restructure" or "reorganize" code
• Asks to "extract", "inline", "rename", or "simplify" existing code
• Plans to migrate between patterns (e.g., MVC → MVVM, CoreData → SwiftData)
• Wants AI to "improve" or "modernize" existing code

Why This Guard Exists