Worked on security hardening and reliability improvements for the pull request title validation workflow in the homebound-team/beam repository. Focused on CI/CD and GitHub Actions, the developer enhanced the workflow by pinning the amannn/action-semantic-pull-request action to a specific commit SHA using YAML, which mitigated risks associated with tag mutation. Permissions were restricted to pull-requests: read, minimizing token scope and reducing potential abuse while maintaining the workflow’s validation functionality. These changes aligned with security best practices for supply chain risk mitigation, ensuring that the workflow remained reliable and secure without requiring code checkout or compromising on operational efficiency.