Carlos Ruiz-Lantero enhanced the grafana/openapi-to-k6 repository by centralizing secret management within the CI/CD publishing workflow. He replaced static GitHub secrets with dynamic retrieval from HashiCorp Vault, introducing a Vault-based secret fetch action that provisions secrets securely during builds. By updating npm authentication to consume Vault-managed secrets, Carlos improved access controls and reduced the risk of secret exposure. His work leveraged YAML for workflow configuration and applied DevOps best practices to strengthen security posture. The changes addressed the need for better auditability and secret rotation, demonstrating a focused approach to security hardening and infrastructure reliability within a short timeframe.