Code Refactoring Skill

A systematic approach to refactoring code based on Martin Fowler's Refactoring: Improving the Design of Existing Code (2nd Edition). This skill emphasizes safe, incremental changes backed by tests.

"Refactoring is the process of changing a software system in such a way that it does not alter the external behavior of the code yet improves its internal structure." — Martin Fowler

Core Principles

1. Behavior Preservation: External behavior must remain unchanged
2. Small Steps: Make tiny, testable changes
3. Test-Driven: Tests are the safety net
4. Continuous: Refactoring is ongoing, not a one-time event
5. Collaborative: User approval required at each phase

Workflow Overview