test(openspec): map cloud integration scenarios

tests/test_cloud_repository_contract.py

@@ -123,6 +123,37 @@ def test_repository_crud_contract(database_url: str) -> None:
         database.close()
 
 
+def test_repository_can_atomically_transfer_explicit_device_takeover(
+    database_url: str,
+) -> None:
+    database = CloudDatabase(database_url)
+    repository = database.repository
+    old_host_id = _unique_id("old-host")
+    new_host_id = _unique_id("new-host")
+    device_id = _unique_id("shared-device")
+
+    try:
+        repository.replace_host_devices(
+            old_host_id,
+            [_device(device_id, old_host_id)],
+        )
+        repository.replace_host_devices(
+            new_host_id,
+            [_device(device_id, new_host_id)],
+            allow_device_takeover=True,
+        )
+
+        matching = [
+            device
+            for device in repository.list_devices()
+            if device.device_id == device_id
+        ]
+        assert len(matching) == 1
+        assert matching[0].host_id == new_host_id
+    finally:
+        database.close()
+
+
 def test_failed_snapshot_transaction_rolls_back(database_url: str) -> None:
     database = CloudDatabase(database_url)
     repository = database.repository