During October 2025, Scott Cowley focused on backend stability for the facebook/sapling repository, addressing a critical issue in the graceful restart process. He implemented a targeted Python fix that modified the unmount logic to operate exclusively on directories, preventing crashes caused by non-directory files such as .DS_Store within the clients directory. This solution reduced downtime and improved reliability during production restarts by ensuring only valid directories were unmounted. Scott’s work demonstrated a strong understanding of backend development and robust error handling, delivering a focused bug fix that enhanced the operational stability of the edenfsctl restart flow in a production environment.