Worked on the openclaw/openclaw repository, focusing on improving overlay UI reliability for macOS applications. Addressed a critical bug in the VoiceWakeOverlayController by implementing robust visibility state management and introducing a first-time presentation check to prevent exclusivity violations during overlay panel presentations. This solution reduced race conditions and ensured overlays do not conflict when presented concurrently, enhancing the stability of the user interface. The work was carried out using Swift, with an emphasis on UI development and macOS-specific behaviors. Maintained clear commit documentation and issue linkage to support future audits and ongoing maintenance of the overlay presentation logic.