Worked on the OpenListTeam/OpenList repository to improve reliability and user experience in the thumbnail rendering workflow. Focused on backend development using Go, with an emphasis on HTTP protocol compliance and robust file handling. Addressed a recurring Chrome ERR_HTTP_2_PROTOCOL_ERROR by correcting the Content-Length calculation in HTTP responses, ensuring accurate header values across multiple drivers and proxy layers. This targeted bug fix reduced protocol-related errors during thumbnail previews and enhanced overall system stability. Added comprehensive tests and code reviews to validate the solution and prevent regressions, demonstrating a methodical approach to network programming and backend maintenance within the project’s infrastructure.