Connect a computer
Install the CLI from apps/agentsctrl/cli, mint a pairing token on the server, then:
npx agentsctrl connect pair <BASE_URL> ACTRL-PAIR-...
Runner loop: npx agentsctrl run (heartbeat + open commands).
Smoke-test an act_ key:
npx agentsctrl agent run-test --base-url <URL> -k act_...