During December 2024, contributed two feature enhancements to the bkeepers/vueuse repository, focusing on composable utilities for frontend development. Developed a visual viewport-aware window size detection feature using the visualViewport API and resize listeners, enabling more accurate mobile size detection and improved cross-device layout consistency. Also introduced a new composable to detect the prefers-reduced-transparency setting from the operating system or browser, exposing this as a reactive state for accessibility-aware interfaces. Both features were implemented with TypeScript and Vue, emphasizing code quality, maintainability, and clear commit traceability. No bugs were addressed this period, with efforts centered on feature delivery and developer experience.