The install half of the OneCLI step is fully scriptable (the gateway
and CLI install themselves via `curl | sh`, PATH + api-host + .env
updates are idempotent). Register the Anthropic secret is still
interactive — the auto driver leaves that for `/setup` §4 to handle.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>