Making a channel registration live no longer depends on an operator/agent
remembering to restart. setup/register.ts and scripts/deregister-room.ts now
call signalEjclawReload() after the DB write, which sends SIGHUP to the running
service's main PID (→ runtimeState.reloadRoomBindings). Best-effort and
injectable-for-tests; no-ops when the service isn't running.
Also document the canonical rule in the committed, agent-loaded platform prompt
(prompts/claude-platform.md): prefer these paths, never fake a restart, verify
via the "Room bindings reloaded" log; a plain in-turn systemctl restart is
forbidden (it kills the agent).
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
f74536a8b2