- AuditLog entity: action, entityType, entityId, data (JSON), performedBy, ipAddress - AuditService: logs actions with current user and IP - Audit on: order_created, order_paid, order_cancelled, order_refunded - Admin /admin/logs: paginated table with action badges, details, user, IP - Navigation link 'Logs' in admin header Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>