Understudy Control Plane API
REST surface behind the dashboard and CLI, served from the gateway host under /admin/v1 and /customer/v1, org-scoped and authenticated with sk_* bearer keys. Covers API key mint/list/revoke, project CRUD by slug, workload CRUD, the model catalog, route writes with traffic percentages, capture listing and envelope fetch, evaluation capture catalogs with frozen cohorts and audited short-lived exports, and reporting endpoints for routing status, provider health, workload status, and usage summaries.