Capability sources, add default source under wf.

tests/wf_mcp/test_broker_server.py

@@ -97,6 +97,20 @@ def test_create_broker_server_exposes_tools_resources_and_prompts() -> None:
     assert "wf.std" in source_ids
 
 
+def test_broker_admin_tools_are_backed_by_wf_admin_source() -> None:
+    service = WfMcpService(store=FileStore(local_temp_root() / "broker_admin_source"))
+    server = create_broker_server(service)
+
+    tools = asyncio.run(server.list_tools())
+    tool_names = {tool.name for tool in tools}
+
+    assert "list_spec_sources" in tool_names
+    assert "get_planner_catalog" in tool_names
+    assert "wf.admin.list_sources" in service.capability_sources[
+        "wf.admin"
+    ].capabilities.tools
+
+
 def test_build_service_from_config_registers_connections() -> None:
     config = BrokerConfig(
         store_root=local_temp_root() / "broker_config_store",