During February 2026, work on the openclaw/openclaw repository centered on enhancing Feishu API integration by developing a large-document chunking workflow. This solution addressed HTTP 400 errors encountered when writing or appending extensive Markdown content by splitting documents into manageable chunks while preserving code block integrity across boundaries. The implementation, written in TypeScript and leveraging full stack development and testing skills, included targeted fixes to ensure content stability and reliable API calls. Comprehensive validation against edge cases and clear documentation established a maintainable foundation for future large-payload handling, improving the reliability and scalability of Feishu-based content workflows.