[WIP] Fix dim coloring leak in check output

[Copilot]

Thanks for assigning this issue to me. I'm starting to work on it and will keep this PR's description up to date as I form a plan and make progress.

Original prompt

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This section details on the original issue you should resolve

<issue_title>The dim coloring leaks into the check output</issue_title>
<issue_description>### Summary

The check reports some info in a dim color before the check output. However, prek is forgetting to clear the color, so it affects the start of the check:

Compare this to pre-commit:

You can see the first thing in the check output is dim, like the previous text. (Note pre-commit also puts in a blank line here, and it seems prek indents the output a bit.)

Platform

macOS 15 ARM

Version

prek 0.2.17 (Homebrew 2025-11-18)

.pre-commit-config.yaml

No response

Log file

No response</issue_description>

<agent_instructions>Investigate why printing the dimmed line in src/run/run.rs 822 line: writeln!(stdout, "{}", format!("- exit code: {status}").dimmed())?; has effect on the next bolded line</agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes The dim coloring leaks into the check output #1124

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