Worked on enhancing Feishu integration within the openclaw/openclaw repository, focusing on improving streaming reliability and data integrity. Developed a robust chunk merge mechanism to preserve card content when updates arrived fragmented or out of order, addressing issues with data loss and unwanted newline characters. Introduced non-blocking WebSocket acknowledgments to increase responsiveness during real-time communication. Leveraged TypeScript for backend development and API integration, ensuring that streaming updates maintained content fidelity across fragmented or upstream changes. The work delivered measurable improvements to user experience by maintaining data consistency and responsiveness, reflecting a thoughtful approach to real-time backend engineering challenges in a production environment.