Worked on enhancing reliability and compatibility across two repositories, focusing on targeted improvements and maintenance. In the tailscale/github-action repository, updated the default Tailscale version in the GitHub Action configuration, aligning it with upstream releases to reduce compatibility risks and streamline future updates. For SagerNet/tailscale, addressed Android file transfer stability by reverting a previous change, restoring correct directory handling and improving cross-platform file operations. Employed Go and YAML for configuration and implementation, leveraging skills in Android development, CI/CD, and file system operations. Maintained a disciplined, traceable workflow with focused commits, ensuring minimal risk and clear change management throughout the process.