Names tmux reads as target syntax (`@1`, `%1`, `=eq`, a bare `~`) passed the
has-session guard by name and then joined something else in new-session -t:
another session, or a fresh shell on the foreign server. They are refused at
discovery now, and take the existing skipped note.
One stopped tmux server emptied the whole local list and left a stuck client
per scan. Each server now gets a bounded ping with stdout at /dev/null first,
because a tmux client hands dups of its stdout to the server: a stopped server
holds our pipe open after the client is dead, so a watchdog around list-panes
cannot work. The probe runs in its own process group, all three transports
keep the rows read before a failure, and a missed ping becomes a note.
The attach and the probe pass -u, so a POSIX-locale container no longer garbles
the tab or lists a non-ASCII name as underscores. A docker attach gets the same
TERM and COLORTERM an owned container's exec gets.
A missing tmux no longer reads as "session is gone", and the launch line's `$`
now reaches bash unexpanded, so the ssh attach's PATH line is expanded at the
far end, as the probe's already was.
fix-plan/write, fix-plan/read and ralph-prompt/write refuse an adopted session:
its workingDir is the neutral /tmp, so they read and wrote a predictable name
in a folder anyone can write to.
FOREIGN_MAX_SOCKETS is gone: it capped nothing, and a real cap in glob order
would never reach `default` on a box with many `codeman-*` sockets (this one
has 212). Closing an adopted tab re-reads the outside-sessions list.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Closing a tab took ~0.55-0.7s on an idle machine, more with child
processes or recently active subagents. Most of it was waiting:
- The web UI kept the tab until DELETE returned, then removed it on the
100ms tab-render debounce, which every session update restarts.
closeSession() is now optimistic: the tab, tile and split go and the
next session is selected before the request is sent, rendered at
once. A refused delete (checked with a GET, since a delete can land
and lose its reply) puts the row back at its old index with the
error toast. This also fixes a latent bug: _apiDelete never throws,
so an HTTP error used to report "Session closed" while the session
kept running. SSE upserts skip ids that are being closed.
- The kill path slept fixed intervals (100ms PTY grace, 200ms for the
pane's children, 100ms for the process group) and verified in 100ms
steps. waitForProcessesExit() (utils/process-exit-wait.ts) keeps
every deadline but returns once the processes are gone, counting a
zombie as exited. Signal decisions keep kill(pid, 0).
- tmux kill-session and the pane-pid lookup ran via execSync, freezing
the server for ~70ms per close. Now async.
- killSubagentsForSession() ran a full `pgrep -f claude` scan per
active/idle subagent (~85ms each with ~100 matching processes). It
now scans once for all of them.
Measured on an isolated instance: click to tab gone 540-690ms -> 58-95ms;
DELETE of a claude session ~450ms -> ~200-260ms.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Give the active-session handoff one owner: closeSession captures wasActive before its await and the session_deleted handler stands down for a close this tab started.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Codeman maintainer