# Fusion Refactor

> Compare refactoring approaches and pick the safest path; use when multiple refactor strategies are possible.

- Skill: `majiayu000/fusion-refactor` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add majiayu000/fusion-refactor`
- Raw SKILL.md: https://api.skillmd.com/api/skills/majiayu000/fusion-refactor/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: majiayu000 (https://skillmd.com/u/majiayu000)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/majiayu000/fusion-refactor

---


# Fusion Refactor

## Overview

Use an F-thread: three workers propose different refactor strategies in separate worktrees. The queen selects the safest path.

## Inputs

- Refactor goal and constraints

## Workflow

1. Verify `git` and `mprocs`.
2. Create session variables and worktrees.
3. Write `tasks.json`, worker prompts, and queen prompt.
4. Launch mprocs.

## Worktree Commands

```bash
git worktree add "{WORKTREE_ROOT}/impl-a" -b fusion/{SESSION_ID}/impl-a
git worktree add "{WORKTREE_ROOT}/impl-b" -b fusion/{SESSION_ID}/impl-b
git worktree add "{WORKTREE_ROOT}/impl-c" -b fusion/{SESSION_ID}/impl-c
```

## Worker Prompt Outline

- Worker A: incremental refactor
- Worker B: module-by-module
- Worker C: larger rewrite with safeguards

## Queen Prompt Outline

- Compare risk, test impact, and migration cost

## mprocs Launch

```bash
mprocs --config .hive/mprocs.yaml
```

## Output

- Selected refactor strategy and staged plan