Ponytail Audit (Over-Engineering Sweep)

一个技能：对整个仓库做「过度工程」审计，返回按优先级排序的清单——该删除、简化或用标准库/原生特性替换的内容。

扫描整棵代码树（而非仅 diff），以 delete/stdlib/native/yagni/shrink 等标签按「删得最多优先」排序。它专找平台已自带的依赖、只有一个实现的接口、只造一个产品的工厂以及手写的标准库功能。

---
name: ponytail-audit
description: "Audit the whole repo for over-engineering. A ranked list of what to delete, simplify, or replace with stdlib or native features."
homepage: https://github.com/DietrichGebert/ponytail
license: MIT
---

ponytail-review, repo-wide. Scan the whole tree instead of a diff. Rank
findings biggest cut first.

## Tags

Same as ponytail-review:

- `delete:` dead code, unused flexibility, speculative feature. Replacement: nothing.
- `stdlib:` hand-rolled thing the standard library ships. Name the function.
- `native:` dependency or code doing what the platform already does. Name the feature.
- `yagni:` abstraction with one implementation, config nobody sets, layer with one caller.
- `shrink:` same logic, fewer lines. Show the shorter form.

## Hunt

Deps the stdlib or platform already ships, single-implementation interfaces,
factories with one product, wrappers that only delegate, files exporting one
thing, dead flags and config, hand-rolled stdlib.

## Output

One line per finding, ranked: `<tag> <what to cut>. <replacement>. [path]`.
End with `net: -<N> lines, -<M> deps possible.` Nothing to cut: `Lean already. Ship.`

## Boundaries

Scope: over-engineering and complexity only. Correctness bugs, security holes,
and performance are explicitly out of scope. Route them to a normal review
pass. Lists findings, applies nothing. One-shot.
"stop ponytail-audit" or "normal mode" to revert.