Fabrício Tosta refactored the Simulation module in the verg1lio/XangoER repository, focusing on improving code maintainability and readability. Using Python and object-oriented programming principles, he streamlined the code structure by removing unnecessary whitespace and enforcing consistent formatting throughout Simulation.py. This targeted update aimed to simplify future enhancements and make onboarding easier for new contributors. All modifications were consolidated into a single commit to minimize integration risk and repository churn. While the scope was limited to maintainability improvements rather than new features or bug fixes, the work demonstrated careful attention to software development best practices and codebase hygiene.