Foundational ConfigHub skill — load first for orientation and doctrine. Covers core vocabulary (Unit, Space, Target, Worker, Trigger, Filter, Link), Space layout per environment/region, config-as-data authoring (literal YAML, no Helm/Kustomize templates, one resource per Unit), delete/destroy gates, and routing a task to the right skill. Route obvious tasks directly (image bump -> cub-mutate; find Units -> cub-query).