refactor-code
Installation
SKILL.md
Refactor Code
Apply the execution contract before this procedure.
Use this skill when the task is to change structure without changing intended behavior.
Core principle: Small, reversible steps over large rewrites. Separate design improvement from behavior change.
Quick Reference
| Step | Action | Verification |
|---|---|---|
| 1 | Define stable behavior | Written statement of what must not change |
| 2 | Add characterization tests | Tests pass on current code |
| 3 | Choose smallest safe slice | One boundary at a time |
| 4 | Rename, move, or extract | Tests still pass |
| 5 | Remove compatibility shims | Tests still pass, new path proven |