Developed a failover resilience improvement for the openclaw/openclaw repository, focusing on enhancing backend reliability in challenging network conditions. The work involved classifying connection errors as retryable timeout failures, which reduced unnecessary session hangs and improved overall uptime. By expanding error pattern recognition to include a wider range of connection-related messages and codes, the system became more robust in detecting and handling network disruptions. Additionally, automatic fallback to alternative models was enabled when endpoints became unreachable, ensuring service continuity. This feature was implemented using TypeScript and leveraged skills in backend development, error handling, and system design to address reliability challenges.