feat: add security guard agentic workflow for PR review

[Copilot]

• Understand the repository structure and security aspects

• Create security guard agentic workflow

  • Created .github/workflows/security-guard.md workflow specification
  • Triggers on pull_request (opened, synchronize, reopened) and workflow_dispatch
  • Uses GitHub MCP server with default toolsets for PR analysis
  • Configures safe-outputs: add-comment for reporting findings
  • Documents critical security components to check

• Fix role requirements issue

  • Added roles: all to allow workflow to run for any user including bots like Copilot
  • Recompiled workflow with gh aw compile security-guard

• Compile workflow

  • Generated .github/workflows/security-guard.lock.yml
  • No errors or warnings

Original prompt

create a "security guard" agentic workflow that examines each PR very carefully (with evidence collected) to see if the PR weakens the security posture or extended the security boundary by any chance. Comment on the PR to suggest actions if the PR weakens it, or do nothing if it passes.

You should deeply understand this repo before creating an security guard agent.

Custom agent used: create-agentic-workflow
Design agentic workflows using GitHub Agentic Workflows (gh-aw) extension with interactive guidance on triggers, tools, and security best practices.

---

💬 We'd love your input! Share your thoughts on Copilot coding agent in our 2 minute survey.

[Mossaka]

waiting for the security guard workflow to run against this PR

[github-actions]

Test Coverage Report

Metric	Coverage	Covered/Total
Lines	81.02%	1230/1518
Statements	80.98%	1261/1557
Functions	78.16%	136/174
Branches	72.56%	410/565

Coverage Thresholds

The project has the following coverage thresholds configured:

• Lines: 38%
• Statements: 38%
• Functions: 35%
• Branches: 30%

---

Coverage report generated by `npm run test:coverage`

[Mossaka]

@copilot fix this issue by dropping the role requirements: Checking if user 'Copilot' has required permissions for githubnext/gh-aw-firewall
Required permissions: admin, maintainer, write
Warning: Repository permission check failed: Copilot is not a user

[Copilot]

@copilot fix this issue by dropping the role requirements: Checking if user 'Copilot' has required permissions for githubnext/gh-aw-firewall
Required permissions: admin, maintainer, write
Warning: R...

Added roles: all to the workflow configuration in commit 6949a63. This removes the role permission check and allows the workflow to run for any user including bots.