Health
The unauthenticated liveness probe: check whether the API and its dependencies are up.
GET /v1/health is the liveness probe. It's the only unauthenticated route
(no key, no scope), so a load balancer, uptime monitor, or status page can poll it
freely. It reports whether the API process is up and whether its backing services
(the database) are reachable, returning 200 when healthy and 503 when a
dependency is degraded. Unlike the rest of the API, this endpoint does not use
the standard envelope: it's a flat, monitor-friendly
body.