ci: 临时生成 rustfmt 校准产物

[makoMakoGo]

这是用于校准 #154 格式输出的临时草稿 PR。它只触发现有 CI 生成格式化后的覆盖率产物，完成后会关闭并删除分支，不会进入正式提交历史。

[coderabbitai]

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[codspeed-hq]

Merging this PR will not alter performance

✅ 27 untouched benchmarks

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_{Comparing codex/issue-153-rustfmt-probe (aaa6de7) with personal/local-clients (48cf8bb)}