获取会话历史记录

{
    "code": 200,
    "message": "success",
    "data": {
        "total": 45,
        "page": 1,
        "limit": 20,
        "histories": [
            {
                "id": "123",
                "session_id": "session_1234",
                "conversation": [
                    {
                        "id": "record_001",
                        "source_text": "你好",
                        "source_language": "zh-CN",
                        "target_text": "Hello",
                        "target_language": "en-US",
                        "timestamp": "2025-07-03T10:30:00"
                    }
                ],
                "start_time": "2025-07-03T10:30:00",
                "end_time": "2025-07-03T11:30:00",
                "summary": "xxxxxxxxx"
            }
        ]
    }
}