Arthur Saint-Denis focused on stabilizing the evaluation workflow in the Future-House/aviary repository by addressing a critical runtime issue in the LFRQAPairwiseEvalEnv module. Using Python and environment configuration skills, he implemented a targeted bug fix that replaced the 'unsure' reward key with 'tie' to correctly handle scenarios with no clear winner during pairwise evaluation. This change prevented KeyErrors and ensured uninterrupted experiment runs without altering the existing API. Arthur’s work prioritized production stability and reliability, delivering a well-scoped patch that improved the robustness of the evaluation pipeline while maintaining alignment with the project’s feature roadmap.