Worked on the ScuffleCloud/scuffle repository to enhance build automation by improving the portability of the project's Justfile scripts. Updated the shebang lines for the test, grind, and doc targets to use /usr/bin/env bash, replacing the previous hard-coded /bin/bash path. This approach leverages the system PATH for interpreter resolution, reducing environment-specific failures and supporting more consistent script execution across different development machines and CI pipelines. Demonstrated proficiency in shell scripting and scripting for build automation, with a focus on cross-environment compatibility. No bugs were addressed during this period, and the primary contribution centered on scripting reliability and maintainability.