Declare forge graph contracts

fabric/bindings/railiance-forge-runtime-secrets-openbao.yaml

@@ -0,0 +1,16 @@
+apiVersion: railiance.fabric/v1alpha1
+kind: BindingAssertion
+metadata:
+  id: railiance-forge.source-forge.runtime-secrets-to-openbao
+  name: Forge runtime secrets binding
+  owner: railiance-forge
+  repo: railiance-forge
+  domain: railiance
+spec:
+  lifecycle: active
+  environments: [dev, staging, prod]
+  dependency_id: railiance-forge.source-forge.needs-runtime-secrets
+  provider_capability_id: railiance-platform.openbao.runtime-secrets
+  provider_interface_id: railiance-platform.openbao.kv-v2
+  status: compatible
+  rationale: Runtime secret custody for forge workloads belongs to the platform OpenBao path; SOPS/age remains bootstrap only.