Worked on the 4C-multiphysics/4C repository over two months, focusing on code quality and documentation improvements. Enhanced maintainability by standardizing C++ code comments, removing author abbreviations, and ensuring consistent formatting, which improved readability and streamlined code reviews without altering functionality. Subsequently, delivered comprehensive documentation updates for Particle Discretization in the DEM/SPH stack, clarifying particle properties, problem types, and assignment handling to reduce misconfigurations and support onboarding. Leveraged skills in code refactoring, comment cleanup, and technical writing using C++ and RST. The work established a cleaner codebase and clearer documentation, supporting future development and cross-method consistency within the repository.