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playbook/skills/style-cleanup/SKILL.md
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csh e0b1c3ab1b ♻️ refactor(skills): standardize first-party skill contracts
upgrade commit-message, style-cleanup, and bulk-refactor-workflow
to use trigger-focused frontmatter and a shared contract structure.

add a first-party skill quality test gate and register it in tests
documentation.
2026-05-19 09:38:32 +08:00

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---
name: style-cleanup
description: Use when the user asks to format code, fix lint issues, or align style with the repository's existing toolchain without changing behavior.
---
# Style Cleanup Workflow(整理代码风格 / 格式化)
## Overview
Apply the repository's existing formatter and lint toolchain without changing
behavior. Core principle: trust repo truth, keep scope tight, and verify with a
rerun.
## When to Use
- The user asks for formatting, `fmt`, `format`, or lint cleanup
- A code change is done and needs a final style pass before review or commit
- A mechanical change produced noisy diff that should be normalized by the repo's
existing toolchain
## When Not to Use
- This is not for semantic refactors or behavior changes
- This is not for introducing a new formatter or lint configuration
- This is not for full-repo reformatting unless the user explicitly requests that
scope
## Inputs
- Target scope: staged files, unstaged files, explicit file list, or explicit
directory
- Relevant languages in scope
- Verification commands available in the repository
## Procedure
1. **Baseline the scope**
- Record `git status --short`.
- Default to changed files only unless the user requested broader scope.
- Resolve the target file set before running any formatter.
2. **Detect the repo toolchain**
- Prefer repository scripts and checked-in config over ad hoc commands.
- Use the repo's existing formatter/linter stack:
- JS/TS: `package.json`, prettier, biome, eslint
- Python: `pyproject.toml`, `isort`, `black`, `ruff`, `flake8`,
`pre-commit`
- C/C++: `.clang-format`, optional `.clang-tidy`
- Shell: `shfmt`, `shellcheck` if already present
- Markdown: prettier/markdownlint only if the repo already uses them
3. **Run cleanup in a fixed loop**
- Use `formatter -> lint/check -> lint --fix -> final check`.
- Prefer repository entrypoints over raw tool invocations.
- Keep execution scoped to the chosen files whenever the toolchain supports it.
4. **Control blast radius**
- If the formatter expands the diff far beyond the requested scope, stop and
explain the tradeoff.
- Offer a scoped pass vs. a full-repo normalization pass instead of silently
widening scope.
5. **Verify**
- Re-run the lightweight checks after fixes.
- Confirm that the second formatter run produces no additional diff.
- If the repo has a canonical lint or test command for style verification, run
that command and report the result.
## Playbook as Authority
When the target repo vendors this playbook, prefer these references for style
judgment:
- TSL: `docs/tsl/code_style.md`, `docs/tsl/naming.md`, `docs/tsl/toolchain.md`
- C++: `docs/cpp/code_style.md`, `docs/cpp/naming.md`, `docs/cpp/toolchain.md`
- Python: `docs/python/style_guide.md`, `docs/python/tooling.md`,
`docs/python/configuration.md`
## Output Contract
- `Scope:` actual files/directories/languages processed
- `Toolchain:` repo configs and commands used
- `Commands:` execution order
- `Changes:` modified files plus diff-size summary
- `Remaining:` unresolved lint/style issues plus why they remain
## Success Criteria
- Style cleanup stays within the requested or agreed scope
- The second formatter run produces no additional diff
- Verification commands pass, or any remaining exception is explicitly explained
- No semantic behavior change is introduced
## Failure Handling
- If the repo lacks a formatter/linter, say so and fall back to minimal manual
cleanup only with clear limits
- If tools are missing locally, report the missing dependency and stop before
inventing a new toolchain
- If two configured tools conflict, follow checked-in repo config and surface the
conflict instead of papering over it
- If cleanup would require wider scope than requested, stop and ask for approval