feat: add agent-shield.yml compliance workflow

[don-petry]

Summary

• Adds the required agent-shield.yml workflow to bring the repository into compliance with the CI standards requirement for an AgentShield scan.
• File copied verbatim from the org standards template at petry-projects/.github/standards/workflows/agent-shield.yml.
• Thin caller delegating all logic to the org-level reusable workflow (petry-projects/.github/.github/workflows/agent-shield-reusable.yml@v1).

Closes #57

Generated with Claude Code

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Reviewing files that changed from the base of the PR and between 5d0b59d and 6164530.

📒 Files selected for processing (1)

• .github/workflows/agent-shield.yml

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch claude/issue-57-20260408-2243

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[don-petry]

@don-petry — this PR adds the required agent-shield.yml workflow (copied verbatim from the org standards template) to resolve the compliance finding in #57. Ready for your review and merge.

[sonarqubecloud]

Quality Gate failed

Failed conditions
1 Security Hotspot

See analysis details on SonarQube Cloud

[Copilot]

Pull request overview

Adds the missing required AgentShield GitHub Actions workflow to meet org CI compliance standards by delegating execution to the org-level reusable workflow.

Changes:

• Introduces .github/workflows/agent-shield.yml as a thin caller workflow.
• Configures the workflow to run on push/pull_request to main with read-only contents permission.
• Delegates all scan logic to petry-projects/.github/.github/workflows/agent-shield-reusable.yml@v1.

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