Yifan Chen focused on stabilizing the detector configuration workflow in the DUNE/larnd-sim repository, addressing challenges with non-modular variations in simulation environments. By implementing a targeted bug fix, Yifan ensured reliable loading of detector configurations, updating FSD and ND-LAR files and refining response and light-parameter settings to improve simulation fidelity. The work involved Python and YAML for data configuration and detector simulation, emphasizing precise configuration management. This contribution reduced downstream debugging and aligned with project standards, demonstrating a methodical approach to enhancing simulation accuracy and flexibility while maintaining clear documentation and robust engineering practices throughout the development process.