Yaroslav Sokolovsky focused on backend reliability improvements in the projectdiscovery/nuclei repository, addressing a nuanced issue in the Headless Module’s HTTP header handling. He implemented a fix in Go that ensured extra headers provided via the CLI were correctly merged without overwriting essential defaults, such as Accept-Language, thereby maintaining consistent request behavior in automated headless workflows. By refining the header merging logic, Yaroslav improved the robustness of network protocol interactions and reduced the risk of header-related bugs during automated scans. His work demonstrated a careful approach to backend development, emphasizing correctness and reliability in networked systems over the course of the month.