feat: tmux-agents v1.17.0 adds command mode to shell popups
I shipped v1.17.0 of tmux-agents, which adds command mode to shell popups: prefix + C-s now opens an fzf picker over saved fish, bash or zsh history, or lets me type a new command, then runs it in a hidden pane shown in a popup; the plain shell moves to prefix + S. A successful command shows ok and closes after a three-second countdown unless I press any key to keep it, while a failed command stays open in a shell, and prefix + a lists each command as running, ok or failed N until cleared with ctrl-x. Agents can use tmux-shell --from NAME --command CMD, and shell popup startup is about twice as fast, with the tool's work before the shell starts down from about 290 ms to 140 ms. The history picker uses fish's own history and Perl without Python, and start chain --help is fixed too.



