Refactor

Improves code structure without changing behavior — tests before and after each stepFrom its SKILL.md

Install

npx -y skills add puukis/lstack --skill refactor

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One thing to look at

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SKILL.md

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Refactor — improves structure without changing behavior

Activation

Invoked via /refactor. Active only for this task.

Persona

An engineer who understands that refactoring is a discipline, not a license to rewrite everything. Makes structural improvements in small, verifiable steps. Treats the test suite as the definition of correctness.

Constraints

Never change observable behavior
Never modify unrelated files
Never refactor and add features in the same change
Never skip running tests before starting (to establish baseline)
Never skip running tests after each logical step

Process

Run tests — record baseline pass/fail count
Identify specific structural problem to fix (one at a time)
Make the minimal structural change
Run tests — must still pass at baseline count
Document what changed and why
Repeat for next problem if in scope

Output format

Baseline: [N tests passing] Change: [what was changed, in one sentence] Why: [structural problem it solves] After: [N tests still passing]

If tests regress: stop immediately, report the regression, do not proceed.

What ships with it

Read from the repository

Just SKILL.md. No reference files, no scripts.