feat: version state hub fabric export contract

tests/test_registry.py

@@ -8,6 +8,7 @@ from pathlib import Path
 
 from railiance_fabric.cli import main as cli_main
 from railiance_fabric.graph import build_graph
+from railiance_fabric.financial import materialize_financial_graph_export
 from railiance_fabric.registry import (
     RESET_CONFIRMATION_TOKEN,
     RegistryError,
@@ -21,6 +22,7 @@ from railiance_fabric.registry import (
     validate_graph_export,
     xregistry_projection,
 )
+from railiance_fabric.schema_validation import draft202012_validator
 from railiance_fabric.server import RegistryHandler
 
 
@@ -261,6 +263,20 @@ def test_graph_export_validation_rejects_unflagged_display_edges() -> None:
         raise AssertionError("expected RegistryError for unflagged display-only edge")
 
 
+def test_state_hub_export_schema_accepts_legacy_and_financial_shapes() -> None:
+    validator = draft202012_validator(Path("schemas/state-hub-export.schema.yaml"))
+    legacy_graph = {
+        "apiVersion": "railiance.fabric/v1alpha1",
+        "kind": "FabricGraphExport",
+        "nodes": [],
+        "edges": [],
+    }
+    financial_graph = materialize_financial_graph_export(_financial_graph())
+
+    assert list(validator.iter_errors(legacy_graph)) == []
+    assert list(validator.iter_errors(financial_graph)) == []
+
+
 def test_financial_graph_export_requires_resolvable_owner() -> None:
     graph = _financial_graph()
     del graph["nodes"][0]["ownership"]