During July 2025, Louis Gagnon developed two core features for the andiwand/acts repository, focusing on enhancing track-based jet analysis in high-energy physics. He built a FastJet plugin that integrates with ACTS, enabling detailed track-level jet studies with configurable kinematic cuts, and established a reusable analysis component for track-density proxy research. Using C++ and CMake, Louis also expanded the TrackStateFlag enumeration, introducing a SplitHitFlag to clarify shared measurements between tracks, which improves data quality and reproducibility. His work demonstrated depth in low-level programming, careful enumeration design, and plugin development, resulting in clearer, more maintainable code for complex analysis workflows.