During June 2025, Sema Cilingir focused on stabilizing the CI pipeline for the extenda/shared-workflows repository by addressing a persistent command-not-found error in the GitHub composite action. By analyzing the YAML configuration and refining the invocation of the Newman tool within GitHub Actions, Sema ensured that API tests executed reliably in the continuous integration environment. This targeted bug fix eliminated a source of CI failures, accelerating deployment feedback and improving workflow reliability. The work demonstrated practical expertise in CI/CD processes, GitHub Actions, and YAML, with a clear focus on diagnosing and resolving integration issues rather than developing new features.