Description

Ensure implementation follows security best practices.

Tasks

• Implement input validation for all endpoints
• Add SQL injection prevention
• Sanitize error messages (no data leakage)
• Use TLS 1.2+ for all connections
• Implement proper secret management
• Add security headers
• Run security audit
• Document security considerations

Documentation

• See SECURITY.md for security policy
• See docs/03-system-architecture.md Section 6 for security design

Acceptance Criteria

• All inputs are validated
• No sensitive data in logs/errors
• Security audit passes