I've been using shpool these days (especially for things like Claude / Codex / etc). Shpool only does persistence, not multiplexing. It turns out this is exactly what I want. I want to have one keyboard shortcut, to detach the session, and that's it.

I can do terminal multiplexing better in the GUI—tabs, virtual desktops, or in the browser with xterm.js.

Yes, you can learn all these different tmux shortcuts, and I know them well enough. I like using the shortcuts in my terminal emulator better. All I really want is a way to continue my session after putting my laptop to sleep, and shpool does exactly that and no more.