Andy focused on code quality improvements and null-safety enhancements across the ppy/osu and ppy/osu-framework repositories, working primarily in C#. He removed dead code by eliminating the unused HandleScale method, which improved maintainability and reduced potential confusion for future contributors. Andy enabled nullable reference types within the osu.Framework.Text namespace, propagating nullability improvements to catch null-related errors at compile time. He also strengthened test robustness by enforcing non-nullable types by default in osu.Framework.Tests, initializing variables with non-null assertions. His work emphasized clean code, code refactoring, and unit testing, resulting in safer, more maintainable framework development over the month.