iPhone's Apple Intelligence shows a beautiful iridescent glow around the screen edges when Siri is thinking. I wanted that same effect on my Mac when Claude Code is working. So I built EdgeGlow — a free, open-source macOS menu bar app that recreates iPhone's edge glow effect on Mac. In this post, I'll walk through how I did it and the technical challenges I faced. How It Works AI Agent triggers hook → curl http://127.0.0.1:9876/start → Screen glows AI Agent finishes → curl http://127.0.0.1:9