Ponytail Audit — Whole-Repo Over-Engineering Audit

一个斜杠命令提示词，扫描整个仓库（而非单次 diff），只针对「过度工程」——死代码、重造标准库、不必要的抽象——按可删减程度从大到小排序输出。

对整个仓库树进行「过度工程」审计（不涉及正确性），按可删减程度从大到小逐条输出：`<标签> <可删内容>。<替代方案>。[路径]`，标签包括 delete/stdlib/native/yagni/shrink，最后给出可精简的净行数与可移除依赖。若没有可删内容，则回复 'Lean already. Ship.' 与已收录的 ponytail-review 命令是同一体系，区别在于审查范围是整仓库而非单次 diff。

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description: Audit the whole repo for over-engineering, what can be deleted
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Audit the entire repository for over-engineering only, not correctness. Scan the whole tree, not a diff. One line per finding, ranked biggest cut first: <tag> <what to cut>. <replacement>. [path]. Tags: delete (dead code/speculative feature), stdlib (reinvented standard library), native (dependency doing what the platform does), yagni (abstraction with one implementation), shrink (same logic, fewer lines). End with the net lines and dependencies removable. If nothing to cut: 'Lean already. Ship.'