Bare 'party host' now walks staff, users, wheel, party and gates on
the first group the caller belongs to, announcing the pick. Boxes
where people already share a system group need no setup; the curated
'party' group remains the fallback and the explicit --group /
TMUX_PARTY_GROUP paths are unchanged. Caller membership is the only
probe (id -nG, portable everywhere); whether a guest is a member stays
an invite-time warning, where it can actually be answered.
The gates in front of destructive operations exist to stop mistakes
(stale rosters, typos, racing hosts); stopping a malicious group
member is a side effect, not the design goal. Written into README
§Security and the man page so future checks are judged by that bar.
ROADMAP.md captures the direction: social features (knock, log,
clean) over further hardening, plus the explicit resist list.
tmux-party: share a tmux session with people on the same UNIX host.
Single-file POSIX shell (party) with a filesystem + tmux server-access
trust model. See README.md.
