In January 2026, Bizwen developed the Light Switch feature for the microsoft/PowerToys repository, enabling dynamic desktop wallpaper switching based on the system’s Light or Dark mode. Using C#, C++, and the Windows API, Bizwen implemented a configuration-driven approach that allows users to specify different wallpaper paths and styles for each mode, enhancing desktop personalization and reducing the need for manual changes. The feature was delivered end-to-end, adhering to PowerToys’ code conventions and user experience goals. While no bugs were fixed during this period, the work demonstrated depth in UI/UX design and desktop application development within a short timeframe.