Worked on enhancing media playback and spatial browsing experiences in the oven-sh/WebKit repository, focusing on VisionOS and Safari. Developed a FullscreenDocking control API and a pre-notification delegate for UIClient, enabling proactive management of fullscreen transitions and safer spatial browsing. Addressed race conditions in VisionOS Safari’s external playback by introducing state synchronization, improving playback reliability. Implemented administrative updates to contributor roles and ensured robust configuration management. Utilized Swift, Objective-C, and C++ to deliver features involving API design, concurrency, and UI development. The work emphasized cross-platform integration, traceable bug fixes, and collaborative workflows to support future VisionOS enhancements.