Fix MinIO get_object response leak in MinioAdapter.get().

Close and release the HTTP response in a finally block per SDK guidance, and add unit tests for success and read-failure cleanup.

Co-authored-by: Cursor <[email protected]>

tests/unit/minio_adapter_test.py

@@ -91,3 +91,36 @@ def test_connect_disconnects_before_reconnect(
 
     assert adapter._client is new_client
     new_client.list_buckets.assert_called_once()
+
+
+def test_get_closes_response_on_success() -> None:
+    """get() must close and release the get_object HTTP response."""
+    mock_client = MagicMock(spec=Minio)
+    mock_client.bucket_exists.return_value = True
+    mock_response = MagicMock()
+    mock_response.read.side_effect = [b"data", b""]
+    mock_client.get_object.return_value = mock_response
+    adapter = MinioAdapter(config=TEST_MINIO_CONFIG, client=mock_client)
+
+    result = adapter.get("some-object")
+
+    assert result is not None
+    assert result.read() == b"data"
+    mock_response.close.assert_called_once()
+    mock_response.release_conn.assert_called_once()
+
+
+def test_get_closes_response_when_read_fails() -> None:
+    """get() must close and release the response even if read() raises."""
+    mock_client = MagicMock(spec=Minio)
+    mock_client.bucket_exists.return_value = True
+    mock_response = MagicMock()
+    mock_response.read.side_effect = OSError("connection reset")
+    mock_client.get_object.return_value = mock_response
+    adapter = MinioAdapter(config=TEST_MINIO_CONFIG, client=mock_client)
+
+    result = adapter.get("some-object")
+
+    assert result is None
+    mock_response.close.assert_called_once()
+    mock_response.release_conn.assert_called_once()