feat: implement security protocols for vero audit guard (#102)

[mrnetwork0001]

Closes #102

Description:
This PR addresses issue #102 by standardizing security protocols and improving system resilience against vulnerabilities within the vero-audit-guard module.

Changes Implemented:

• Security Protocol Engine: Created src/audit-guard/src/security-protocol.ts to implement strongly-typed security checks, applying Rust-like safety standards (e.g. Result<T, E> patterns for explicit error handling) to ensure safer failure modes.
• Audit-Guard API Integration: Integrated the new protocol layer with the existing API by exporting the SecurityProtocol module directly in index.ts.
• CI/CD Reliability Fixes: Fixed existing YAML syntax errors (duplicate env: keys) in .github/workflows/policy-compliance.yml which would have otherwise prevented CI checks from evaluating properly.

Affected Areas:

• src/audit-guard/src/security-protocol.ts (New File)
• src/audit-guard/src/index.ts
• .github/workflows/policy-compliance.yml

Verification:

• Code reviewed against internal security architecture documentation.
• Security-sensitive checks return explicit responses modeled after strict safety standards.
• Fixed invalid GH Actions syntax to ensure successful CI/CD runs.

[N-thnI]

please ensure all checks pass and please resolve conflicts