During December 2025, Devilhiyan focused on improving database reliability for the topoteretes/cognee repository. They addressed a critical issue in PostgreSQL connection handling by implementing URL encoding for usernames and passwords, ensuring that special characters in credentials no longer caused connection failures. This targeted fix, developed in Python and leveraging backend development and database management skills, reduced the risk of production outages and minimized support incidents related to database connectivity. Devilhiyan’s work demonstrated careful attention to security and correctness, delivering a low-risk, well-documented change that improved deployment reliability across diverse environments without introducing new features or unnecessary complexity.