Starting work with sesh

When work needs to start somewhere other than the shell you're in, call sesh, not tmux.

Reaching for tmux new-session -s <name> or tmux new-window -t <session> throws away what the user set sesh up to do: resolve a rough name or a directory to the right session, start it from its configured root with its startup commands, reuse what's already running instead of duplicating it, and decide whether to move the user or leave them where they are.

If sesh is not on PATH, fall back to raw tmux. Otherwise use the commands below.

Session or window?

This is the first decision, and the one most worth getting right.

A session per unit of work. That's the model — a project, a repo, a directory. If the work has its own directory, it wants its own session: