Proxy the Controller under /api/ai so the model sees one API: an
aggregate /status to start every diagnosis, lean service list, recent
service logs (lines clamped), and disks + SMART. One controller_client
helper resolves the Controller base URL (docker service name vs
localhost). Every proxy degrades to an `errors` entry when the
Controller is unreachable — never a 500.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
