Establish Railiance Fabric graph model

fabric/dependencies/flex-auth-api-topaz-runtime.yaml

@@ -0,0 +1,28 @@
+apiVersion: railiance.fabric/v1alpha1
+kind: DependencyDeclaration
+metadata:
+  id: flex-auth.api.needs-topaz-runtime
+  name: flex-auth Topaz runtime dependency
+  owner: flex-auth
+  repo: flex-auth
+  domain: railiance
+  source_links:
+    - label: Seed dependency declaration
+      path: fabric/README.md
+spec:
+  lifecycle: active
+  environments: [dev, staging, prod]
+  consumer_service_id: flex-auth.api
+  requires:
+    capability_type: authorization-decision-service
+    capability_id: flex-auth.topaz.authorization-runtime
+  interface:
+    type: http-api
+    version_constraint: ">=v1 <v2"
+  auth:
+    method: oidc
+  criticality: high
+  data_classification: restricted
+  fallback:
+    mode: degraded
+    description: flex-auth can fall back to limited local policy checks only for non-critical paths.