During December 2025, Kotopheiop focused on backend reliability in the MHSanaei/3x-ui repository, addressing a persistent issue with CPU threshold notifications. Using Go, they delivered a targeted bug fix that introduced robust validation to the notification flow, ensuring alerts are only sent when the CPU threshold is both retrievable and non-zero. This approach eliminated false notifications caused by failed or invalid threshold retrievals, directly reducing alert noise in production environments. By enhancing error handling and associating the change with a clear commit reference, Kotopheiop improved both the maintainability and traceability of the codebase, demonstrating depth in backend development practices.