During October 2025, Slavafyi developed a persistent file logging system for the mhsanaei/3x-ui repository, enhancing backend reliability and operational transparency. Leveraging Go and system programming expertise, Slavafyi extended the existing logging infrastructure to support file-based logs alongside console and syslog outputs. This approach enabled debug messages to be stored in a dedicated log directory, improving troubleshooting and auditability for the application. The work also included updating the in-memory UI buffer to align with the new file logging structure, ensuring consistent log handling across runtime components. The feature demonstrated depth in backend development and robust logging integration.