test: align output binding integration coverage

tests/wf_mcp/server/test_tools.py

@@ -103,7 +103,9 @@ async def test_registered_output_bindings_tool_delegates_typed_bindings_once(
     )
     service = WfMcpService(
         store=FileStore(tmp_path / "tool_invocation_store"),
-        artifact_store=FileWorkflowArtifactStore(tmp_path / "tool_invocation_artifacts"),
+        artifact_store=FileWorkflowArtifactStore(
+            tmp_path / "tool_invocation_artifacts"
+        ),
         draft_workspace_store=FileDraftWorkspaceStore(
             tmp_path / "tool_invocation_drafts"
         ),

tests/wf_mcp/workflow_surface/test_drafts.py

@@ -361,8 +361,14 @@ def test_workflow_surface_sets_ordered_canonical_step_output_bindings(
             revision=created["revision"],
             step_id="call",
             bindings=[
-                OutputBinding(source="value", target="state.report"),
-                OutputBinding(source="value", target="state.audit"),
+                OutputBinding(
+                    source=LocalPath.parse("value"),
+                    target=StatePath.parse("state.report"),
+                ),
+                OutputBinding(
+                    source=LocalPath.parse("value"),
+                    target=StatePath.parse("state.audit"),
+                ),
             ],
         )
     )