Over a two-month period, this developer contributed to both mozilla/experimenter and ggml-org/llama.cpp, focusing on targeted improvements in C++ and front-end development. In mozilla/experimenter, they clarified UI messaging to accurately reflect backend logic, reducing user confusion by updating the interface to specify that users are included or excluded if enrolled in any listed experiments. This front-end change, implemented in HTML, aligned user expectations with actual system behavior. In ggml-org/llama.cpp, they modernized the codebase by adding the algorithm header, enabling C++23 compatibility. Their work emphasized precise, low-risk updates that improved maintainability and prepared projects for future enhancements.