Replace stale black and isort config with ruff

[glenn-jocher]

Two pyproject/tooling corrections.

• pyproject.toml configured [tool.black] and [tool.isort], but neither tool runs anywhere in this repo — .github/workflows/format.yml formats it with Ruff and docformatter via ultralytics/actions, matching the rest of the org. Replaced both tables with [tool.ruff] line-length = 120, which is what actually applies.
• Cleared the executable bit on capitalize_comments.py (mode 100755 → 100644). The file has no shebang, so the bit never did anything, and ruff check flagged it as EXE002. It was a leftover from the old design where .pre-commit-hooks.yaml pointed entry at the filename; since Fix capitalize-comments hook entry point, add AGENTS.md #30 the hook runs through the capitalize-comments console script, so nothing executes the file directly.

Verified: with the new config ruff check . reports "All checks passed" (it reported the EXE002 error before the mode change) and ruff format --check . shows 4 files already formatted. Re-ran the hook via pre-commit try-repo against the committed branch state with a cleared pre-commit cache — it still installs and capitalizes correctly.

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Modernizes project linting configuration by replacing Black and isort settings with Ruff and correcting a script file’s permissions. 🛠️

📊 Key Changes

• Changed capitalize_comments.py from executable (755) to standard non-executable (644) permissions.
• Replaced separate [tool.black] and [tool.isort] configuration sections with a unified [tool.ruff] section.
• Preserved the project’s 120-character line-length setting.
• Removed the isort Black-compatible profile because Ruff now manages formatting and import sorting. ✨

🎯 Purpose & Impact

• Simplifies development tooling by consolidating linting and formatting configuration under Ruff.
• Reduces redundant configuration and supports a more streamlined pre-commit workflow.
• Prevents the comment-capitalization script from being treated as a directly executable file.
• Maintains existing line-length behavior while improving tool consistency for contributors. ✅

[UltralyticsAssistant]

👋 Hello @glenn-jocher, thank you for submitting a ultralytics/pre-commit 🚀 PR! This is an automated welcome message, and an engineer will assist with your review. Please check the following:

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[UltralyticsAssistant]

🔍 PR Review

_{Made with ❤️ by Ultralytics Actions}

Clean change. The obsolete Black and isort configuration is removed, and the replacement Ruff line-length setting matches the repository's Ruff-based formatting workflow. No actionable issues found.

[UltralyticsAssistant]

🎉 Thank you, @glenn-jocher, for this thoughtful contribution—and congratulations on the merge!

“Great things are done by a series of small things brought together.” — Vincent van Gogh

By consolidating Black and isort settings under Ruff, preserving the 120-character line length, and correcting the script permissions, this PR simplifies tooling and creates a more consistent workflow for contributors. Your attention to these details helps keep the project clean, maintainable, and efficient. 🙌