Worked on the localsend/localsend repository with a focus on backend stability and error handling using Dart. Addressed a critical reliability issue by implementing defensive checks in tray helper functions to guard against uninitialized access to RefenaScope.defaultRef, which previously risked application crashes during startup when the app state was not ready. This targeted bug fix improved the resilience of tray-related workflows and enhanced overall startup reliability. No new user-facing features were introduced during this period, as the primary objective was to strengthen the application's backend robustness and ensure safer handling of uninitialized references within the existing Dart codebase.