Establish Railiance Fabric graph model

examples/declarations/invalid/binding-bad-status.yaml

@@ -0,0 +1,15 @@
+apiVersion: railiance.fabric/v1alpha1
+kind: BindingAssertion
+metadata:
+  id: flex-auth.api.bad-binding-status
+  name: Bad binding status
+  owner: flex-auth
+  repo: flex-auth
+  domain: railiance
+spec:
+  lifecycle: active
+  environments: [dev]
+  dependency_id: flex-auth.api.needs-runtime-secrets
+  provider_capability_id: railiance-platform.openbao.runtime-secrets
+  status: accepted
+  rationale: Invalid because accepted is not a binding status.