Developed a hidden startup window with system tray integration for the localsend repository, enabling the desktop application to launch in the background without displaying the main window. Using C++ and GTK, the implementation introduced a --hidden startup path and leveraged gtk_widget_realize to initialize the window for plugin readiness while keeping it invisible. This approach addressed startup race conditions related to Refena loading and tray attachment, improving reliability and user experience by preventing UI flicker during launch. The work laid the foundation for future background task enhancements and demonstrated proficiency in desktop application development, command-line argument handling, and GTK-based UI control.