While risking to be nit-picky:
tmux 3.1+ (e.g. included in Debian 11 "bullseye") is capabable of using ~/.config/tmux/tmux.conf
https://unix.stackexchange.com/questions/644819/is-it-possible-to-move-tmux-conf-to-config-folder
(Apart from that, the general idea of boxxy seems communicated good enough. Cheers!)
While risking to be nit-picky:
tmux 3.1+ (e.g. included in Debian 11 "bullseye") is capabable of using ~/.config/tmux/tmux.conf
https://unix.stackexchange.com/questions/644819/is-it-possible-to-move-tmux-conf-to-config-folder
(Apart from that, the general idea of boxxy seems communicated good enough. Cheers!)