During December 2025, Bartosz focused on enhancing reliability and stability in the potiuk/airflow repository by addressing a critical issue in workspace configuration management. He implemented a targeted dependency upgrade, raising the minimum Prek version to 0.2.0 across YAML configuration files to ensure recursive hook discovery in multi-package workspaces. This change reduced configuration drift and eliminated a common failure path in hook detection, directly supporting more stable deployments and streamlined testing. Bartosz demonstrated strong skills in dependency management and configuration management, coordinating cross-repo updates to maintain consistency and improve developer productivity in complex, multi-repository environments. Only bug fixes were delivered.