fail("Failed to list temp directory: " + e.getMessage());
        }
    }

    // --- execute() with config format tests ---

    @Test
    public void test_execute_usesConfigFormat_json() throws IOException {
        final Map<String, Object> doc = new LinkedHashMap<>();
        doc.put("url", "https://example.com/data");
        doc.put("title", "Test");
        doc.put("content", "Body");