AdminRoutes

A status code, a content type and a body — everything these routes ever need.

The generated OpenAPI document.

Kept on this operational router rather than left to the Swagger UI bundle's own /docs/openapi.yaml, because /openapi.json at the root is the conventional place a code generator looks and it should not move just because the UI is mounted somewhere. Both render the same model.

Split liveness and readiness, under Meters.HealthPath so one Prometheus/ingress config covers all three services.

Served rather than published as a file so the document can never describe a build other than the running one.

Liveness: the process is running and its event loop is answering. Consults nothing else — see AdminRoutes.readiness.