The handover named TUIOS but never said plainly that it is not tmux, how a session is
created on each machine, that workspaces vanish when empty and renumber, that TUIOS keeps
h/j/k/l in window mode, or how to drive a pane from a script. All of it is now in
docs/TUIOS-RUNBOOK.md, referenced first in AGENTS.md and README.
Measured: six Pi agents and their ids, the user key rule, blocker endpoint, sandbox
archived (DELETE returned 500), scratch repo removed, Go not installed, repo has no
remote. The wake step is named as unproven with the endpoint that should trigger it.
