Worked on the Tencent/Hunyuan3D-2 repository to enhance system stability and robustness through targeted backend improvements. Focused on Python-based API development and file handling, the work addressed operational risks by implementing automatic cleanup of temporary files in the ModelWorker component, preventing resource leaks and reducing disk usage. Additionally, input validation was strengthened by correcting the API server port argument type to integer, minimizing runtime errors and improving deployment reliability. Clear and descriptive commit messages were maintained to support code traceability and facilitate future audits. The contributions prioritized maintainability and operational quality, reflecting a methodical approach to backend development and system reliability.