Update README.md to provide a comprehensive overview of The Order monorepo, including repository structure, quickstart guide, development workflow, and contribution guidelines.

docs/governance/SECURITY.md

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+# Security Policy
+
+## Supported Versions
+
+We currently support the following versions with security updates:
+
+| Version | Supported          |
+| ------- | ------------------ |
+| 1.0.x   | :white_check_mark: |
+| < 1.0   | :x:                |
+
+## Reporting a Vulnerability
+
+We take security vulnerabilities seriously. If you discover a security vulnerability, please follow these steps:
+
+1. **Do NOT** open a public GitHub issue
+2. Email security details to: security@the-order.org (or your security contact)
+3. Include:
+   - Description of the vulnerability
+   - Steps to reproduce
+   - Potential impact
+   - Suggested fix (if any)
+
+### Response Timeline
+
+- **Initial Response**: Within 48 hours
+- **Status Update**: Within 7 days
+- **Fix Timeline**: Depends on severity (see below)
+
+### Severity Levels
+
+- **Critical**: Remote code execution, authentication bypass, data breach
+  - Fix timeline: 24-48 hours
+- **High**: Privilege escalation, sensitive data exposure
+  - Fix timeline: 7 days
+- **Medium**: Information disclosure, denial of service
+  - Fix timeline: 30 days
+- **Low**: Best practices, defense in depth
+  - Fix timeline: Next release cycle
+
+## Security Practices
+
+### Secrets Management
+
+- All secrets must be encrypted using SOPS
+- Never commit plaintext secrets
+- Use environment variables for configuration
+- Rotate secrets regularly
+- Use short-lived tokens via OIDC
+
+### Code Security
+
+- All code must pass security linting (ESLint security plugins)
+- Dependencies are scanned for vulnerabilities (Grype)
+- Container images are signed (Cosign)
+- SBOM generation for all artifacts (Syft)
+
+### Infrastructure Security
+
+- Immutable infrastructure via Terraform
+- Secrets stored in KMS/HSM
+- Network policies enforced via Kubernetes
+- API gateway with WAF rules
+- Regular security audits and penetration testing
+
+### Access Control
+
+- Least privilege principle
+- Quarterly access reviews
+- MFA required for all production access
+- Audit logs for all sensitive operations
+
+### Compliance
+
+- eIDAS compliance for identity services
+- Data retention policies per jurisdiction
+- WORM storage for legal documents
+- Audit trails for all financial transactions
+
+## Security Updates
+
+Security updates are released as:
+- **Hotfixes**: For critical vulnerabilities
+- **Patch releases**: For high/medium severity issues
+- **Regular releases**: For low severity and general improvements
+
+## Disclosure Policy
+
+- Vulnerabilities are disclosed after a fix is available
+- Coordinated disclosure with responsible parties
+- CVE assignment for eligible vulnerabilities
+- Security advisories published in `docs/governance/security-advisories/`
+
+## Contact
+
+- **Security Email**: security@the-order.org
+- **PGP Key**: [Link to public key]
+- **Security Team**: @the-order/security-team
+
+## Additional Resources
+
+- [Threat Models](docs/architecture/threat-models/)
+- [Incident Response Runbook](docs/governance/runbooks/incident-response.md)
+- [Security Checklist](docs/governance/security-checklist.md)
+