Dan Bopes focused on improving database connection stability and efficiency for the Cockatrice/Cockatrice repository during February 2025. He addressed an issue where the system unnecessarily closed and reopened database connections by refining the checkSql() condition to more accurately detect inactive connections. This adjustment prevented redundant reconnection operations, reducing latency and enhancing reliability under concurrent usage. Working primarily with C++ and leveraging his database management expertise, Dan’s contribution improved the performance and stability of the database layer. The work demonstrated a targeted, in-depth approach to backend reliability, addressing a nuanced problem that impacts the overall robustness of data interactions.