Individual skill

refactor

基于 Martin Fowler 方法论的系统化代码重构 skill。适用于用户请求重构代码、改进代码结构、减少技术债、清理旧代码、消除 code smell 或提升可维护性时。这个 skill 采用分阶段、带研究与计划的安全增量实施方式。

zh/03-skills/refactor/SKILL.md

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# 代码重构 Skill

这是一个基于 Martin Fowler《Refactoring: Improving the Design of Existing Code》(第 2 版)的系统化代码重构方法。这个 skill 强调安全、渐进的修改,并由测试提供保障。

> “重构是在不改变软件外部行为的前提下,改进其内部结构的过程。” — Martin Fowler

## 核心原则

1. **保持行为不变**:外部行为必须保持一致
2. **小步前进**:每次只做很小、可测试的改动
3. **测试驱动**:测试是安全网
4. **持续进行**:重构是长期过程,不是一次性任务
5. **协作确认**:每个阶段都需要用户确认
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