assertEquals("Q4", messages.get(5).getContent());
        assertEquals("A4", messages.get(6).getContent());
    }

    @Test
    public void test_buildIntentRequest_historyExactlySix() {
        final List<LlmMessage> history = new ArrayList<>();
        history.add(LlmMessage.user("Q1"));
        history.add(LlmMessage.assistant("A1"));
        history.add(LlmMessage.user("Q2"));