feat: added analyst risk pr agent

[zivadler]

Pull Request Checklist

• I have read and followed the CONTRIBUTING.md guidelines.
• My contribution adds a new instruction, prompt, agent, or skill 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, or skill with GitHub Copilot.
• I have run npm start and verified that README.md is up to date.

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Description

Analyze the pull request or current branch changes for security, safety, and operational risks.
Write a report file to /reports/review-{branchname}.md with the results.
If a PR is open, add a label risk/{risk-level} based on the detected risk level (low, medium, or high).
Do not create or update a PR.

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Type of Contribution

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

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Additional Notes

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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.

[Copilot]

Pull request overview

Adds a new “risk analysis” custom agent intended to assess PR/branch changes for security, safety, and operational risk, generate a Markdown report, and (when a PR exists) manage risk/* labels.

Changes:

• Introduces a new agent definition for PR risk & safety analysis.
• Specifies report output to /reports/review-{branchname}.md and risk label management behavior.

[Copilot]

This file is being added as a new custom agent, but it does not follow the repository’s established agent file conventions: agent files are *.agent.md and include YAML front matter (see docs/README.agents.md:8 and e.g. agents/address-comments.agent.md:1-8). As-is, this likely won’t be discoverable/usable as an agent. Rename to agents/analyst-risk-file-generator.agent.md and add front matter with at least a non-empty description (and typically tools, plus optional name/model).

[Copilot]

New agent files should be added to the agents catalog (docs/README.agents.md) so users can discover/install them (the catalog is a table of agents; this new agent is not present). Please add an entry for this agent after renaming it to *.agent.md.