assertEquals("Fess Docker", result.getQuery());

        // Verify the full request has structured messages: system + history + wrapped user
        final LlmChatRequest capturedRequest = client.getLastChatRequest();
        assertNotNull(capturedRequest);
        final List<LlmMessage> messages = capturedRequest.getMessages();
        assertEquals(4, messages.size());
        assertEquals("system", messages.get(0).getRole());