Preserve no-AST adapter bindings

tests/test_adapter_contract.py

@@ -366,6 +366,7 @@ class AdapterContractTests(unittest.TestCase):
             self.assertTrue(visual_logic["available"])
             self.assertEqual("entry", visual_logic["root"])
             self.assertEqual("return", visual_logic["edges"][0]["relation"])
+
             loader.extract_calls.clear()
             cache_path = root / ".cache" / "incremental" / "extractions.json"
             cache_modified = cache_path.stat().st_mtime_ns
@@ -403,6 +404,20 @@ class AdapterContractTests(unittest.TestCase):
                 index.get_node("guide.workflow")["node"]["source_path"],
             )
 
+    def test_no_ast_index_policy_rejects_logic_publication(self) -> None:
+        with tempfile.TemporaryDirectory() as directory:
+            root = Path(directory).resolve()
+            project = AdapterProject(
+                IncrementalLoader(root),
+                cache_root=root / ".cache" / "no-ast",
+            )
+
+            with self.assertRaises(DocForgeError) as captured:
+                ProjectIndex(project, allow_logic=False).build()
+
+            self.assertEqual("adapter_policy_forbids_logic", captured.exception.code)
+            self.assertFalse(project.descriptor.index_path.exists())
+
     def test_fast_incremental_reads_reverify_a_changed_index_file(self) -> None:
         with tempfile.TemporaryDirectory() as directory:
             root = Path(directory).resolve()