Worked on the JeffersonLab/halld_recon repository to enhance the accuracy and maintainability of particle identification systems. Focused on updating PDG codes for deuteron, triton, He-3, and He-4, ensuring that both the PDGtype and PDGtoPType functions correctly mapped and returned the new codes. Applied C++ skills to implement these changes, emphasizing data management and physics simulation principles. Additionally, standardized code formatting in particleType.h by replacing tabs with spaces, which improved readability and long-term code maintenance. The work addressed foundational aspects of analysis workflows, contributing to cleaner code and more reliable particle identification for future development.