Session lifecycle now runs entirely on the stream-json model: argv
selection picks --resume <id> for an existing transcript and
--session-id <uuid> for a fresh one, and the managed-session orchestrator
owns spawn/close. With the transport off tmux, remove the tmux session
lifecycle (reaping, kill-all-for-repo) and the tmux-polling team observer;
kill-all-sessions now closes sessions through the orchestrator. Team
membership is orchestrator-driven since the coordination broker landed.
Amends D-41 (tmux persistence -> --resume). T-167.
Co-Authored-By: Claude <noreply@anthropic.com>
jpmschweitzerandClaude
f6b88f503f