Do you leave your Mac running when Codex is on a long task?

I'm working on a small tool for people who run Codex for long tasks, and I want to understand how people really handle it first. How long do your longer Codex tasks usually run? When you step away, do you keep the Mac open, use "Keep this Mac awake", or move the work to a server? Do you approve things from your phone, or just run in full auto? What still breaks or annoys you? Not sharing anything, just want to hear how you do it.