Bertrand Bellenot focused on improving the reliability of analysis workflows in the root-project/roottest repository by addressing a persistent file path dependency. He identified and fixed a hardcoded reference to h1analysisTreeReader.C within a C++/ROOT script, ensuring the analysis script could execute correctly across different environments. This targeted bug fix streamlined script execution, reduced manual debugging, and facilitated smoother continuous integration runs. Bertrand applied his skills in C++, debugging, and environment-agnostic configuration, leveraging git for precise version control. The work enhanced maintainability and onboarding for new contributors, demonstrating careful attention to cross-platform compatibility and workflow automation within the project.