the WorkflowApiBackend collapses

tests/wf_api/test_no_double_delegation.py

@@ -0,0 +1,28 @@
+from __future__ import annotations
+
+import ast
+from pathlib import Path
+
+
+def _imports_module(path: Path, module_name: str) -> bool:
+    tree = ast.parse(path.read_text(encoding="utf-8"), filename=str(path))
+    for node in ast.walk(tree):
+        if isinstance(node, ast.ImportFrom) and node.module == module_name:
+            return True
+        if isinstance(node, ast.Import):
+            if any(alias.name == module_name for alias in node.names):
+                return True
+    return False
+
+
+def test_cli_and_mcp_tools_do_not_import_backend_adapter() -> None:
+    root = Path(__file__).resolve().parents[2]
+
+    assert not _imports_module(
+        root / "src" / "wf_cli" / "context.py",
+        "wf_mcp.broker.service.workflow_api_backend",
+    )
+    assert not _imports_module(
+        root / "src" / "wf_mcp" / "workflow_surface" / "tools.py",
+        "wf_mcp.broker.service.workflow_api_backend",
+    )