refactor: move mcp auth record ownership

examples/authoring_workflow_as_node.py

@@ -9,6 +9,7 @@ from pydantic import BaseModel
 if __package__ in {None, ""}:
     sys.path.insert(0, str(Path(__file__).resolve().parents[1]))
 
+from examples.demo_workflow import build_demo_registry, build_demo_workflow
 from wf_authoring import (
     WorkflowBuilder,
     input_from,
@@ -19,8 +20,6 @@ from wf_authoring import (
 from wf_core import END
 from wf_core.run_state import RunState
 
-from examples.demo_workflow import build_demo_registry, build_demo_workflow
-
 
 class ChildInput(BaseModel):
     """Input accepted by the wrapped child workflow."""

examples/mcp_tool_workflow.py

@@ -1,8 +1,8 @@
 from __future__ import annotations
 
 import asyncio
-from pathlib import Path
 import sys
+from pathlib import Path
 
 from wf_core import END
 from wf_mcp.broker import WfMcpService

examples/mcp_workflow_surface.py

@@ -9,10 +9,10 @@ from wf_artifacts import (
     FileWorkflowArtifactStore,
     WorkflowDeployment,
 )
+from wf_mcp.broker import WfMcpService
 from wf_mcp.capabilities import DiscoveredPrompt, DiscoveredResource, DiscoveredTool
 from wf_mcp.models import AuthRecord, ConnectionConfig
 from wf_mcp.sdk import ToolCallResult
-from wf_mcp.broker import WfMcpService
 from wf_mcp.sdk.base import BackendAdapter
 from wf_mcp.storage import FileStore
 from wf_mcp.workflow_surface import WorkflowSurfaceHandlers

examples/mcp_wrapper_authoring_flow.py

@@ -3,11 +3,10 @@ from __future__ import annotations
 from pathlib import Path
 from typing import Any
 
+from examples.mcp_workflow_surface import prepare_demo_service
 from wf_artifacts import WorkflowDeployment
 from wf_mcp.workflow_surface import WorkflowSurfaceHandlers
 
-from examples.mcp_workflow_surface import prepare_demo_service
-
 
 async def author_echo_wrapper_from_capability(root: Path) -> dict[str, Any]:
     """Author, save, deploy, and run one wrapper from capability hints.