Hmm..., not sure if it satisfies your requirement, but you can basically create your desktop from Emacs. You may find an example below.

See exwm
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Hmm..., not sure if it satisfies your requirement, but you can basically create your desktop from Emacs. You may find an example below.

See exwm
Do you mean like tmux?
No, as it's own small applications, no multiplexing.
I've made a small battery/time indicator script years ago, that launches in top right corner using tput. But i'm sure something ncurses/Rust could do better.
Especially a "task bar" with background & processes seems a new idea for cli. Could use kill to bring them to front again or even freeze or save & restore them.