Worked on the deepmodeling/abacus-develop repository, focusing on enhancing code safety and maintainability through a targeted type-safety refactor. Addressed a bug by systematically replacing C-style casts with static_cast in C++ code, specifically within read_pp_complete.cpp, to reduce potential runtime type issues and align with modern coding standards. This approach improved the codebase’s readiness for static analysis and future development. Collaborated closely with peers to ensure careful review and adherence to best practices. The work demonstrated strong skills in C++ and code refactoring, prioritizing long-term maintainability and runtime safety over feature delivery during the reported period.