Worked on enhancing the Mac CI pipeline reliability and test stability for the aws/aws-toolkit-jetbrains repository. Focused on improving the CI/CD workflow by upgrading checkout and setup-java actions to their latest versions, ensuring consistent build environments. Addressed test error messaging by refining error handling in SetupAuthenticationDialogTest, making authentication failures easier to diagnose. Optimized test execution by modifying CfnLspStartupActivity to be skipped during unit tests, reducing unnecessary processing and accelerating both local and CI test runs. Utilized Kotlin, Gradle, and YAML to implement these changes, resulting in more stable and efficient continuous integration processes without introducing new bug fixes.