Federate the release-registry capability index.

capability.infotech.release-coverage is composed from the local checkout
into the federated index.

Assistant: grok
Assistant-Session: 01a15f9f-3d77-7d21-911b-d93c86f9d14f

registry/federation/sources.yaml

@@ -463,6 +463,11 @@ sources:
   domain: helix_forge
   cache_ttl_seconds: 86400
   auth_header: Authorization
+- repo: release-registry
+  index: ../release-registry/registry/indexes/capabilities.yaml
+  enabled: true
+  required: true
+  domain: infotech
 - repo: resource-control
   index: ../resource-control/registry/indexes/capabilities.yaml
   enabled: true