New Skill - add ruff-recursive-fix skill

[MarcelloCuoghi]

Pull Request Checklist

• I have read and followed the CONTRIBUTING.md guidelines.
• I have read and followed the Guidance for submissions involving paid services.
• My contribution adds a new instruction, prompt, agent, skill, or workflow file in the correct directory.
• The file follows the required naming convention.
• The content is clearly structured and follows the example format.
• I have tested my instructions, prompt, agent, skill, or workflow with GitHub Copilot.
• I have run npm start and verified that README.md is up to date.
• I am targeting the staged branch for this pull request.

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Description

Adds the ruff-recursive-fix Agent Skill, a controlled iterative workflow for enforcing Python code quality using Ruff.

The skill runs Ruff checks against a configurable scope, applies safe and then unsafe autofixes in sequence, reviews each diff, performs manual remediation for remaining findings, and loops until the codebase is clean or a user decision is required. It supports flexible runner resolution (uv, ruff, python -m ruff, pipx run ruff), per-run rule overrides (--select, --ignore, --extend-select, --extend-ignore), and a strict suppression policy — # noqa is added only when explicitly justified.

Usage: invoke it via GitHub Copilot with prompts like:

• "Run ruff-recursive-fix on the whole repo with default config."
• "Run ruff-recursive-fix on src/models, ignore DOC rules."

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Type of Contribution

• New instruction file.
• New prompt file.
• New agent file.
• New plugin.
• New skill file.
• New agentic workflow.
• Update to existing instruction, prompt, agent, plugin, skill, or workflow.
• Other (please specify):

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Additional Notes

No external scripts or bundled assets are included — the skill is self-contained in SKILL.md.

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By submitting this pull request, I confirm that my contribution abides by the Code of Conduct and will be licensed under the MIT License.