During September 2025, Donaldinho focused on code quality improvements for the GyulyVGC/sniffnet repository, specifically targeting the Check Updates module. He addressed a formatting issue by removing a trailing newline in the check_updates.rs file, ensuring the codebase adhered to established Rust style conventions. This work did not introduce new features or alter functionality, but it enhanced maintainability and reduced the risk of future merge conflicts. Donaldinho demonstrated disciplined use of Rust and code formatting best practices, applying minimal, low-risk changes that support future development. His contributions reflect a careful approach to repository hygiene and long-term project sustainability.