curl "http://localhost:18080/api/history?user_id=user_123&session_id=session_abc&limit=20" \
  -H "Authorization: Bearer YOUR_JWT_TOKEN"

{
  "code": 0,
  "msg": "ok",
  "data": {
    "messages": [
      {
        "msg_id": "q_550e8400-e29b-41d4-a716-446655440000",
        "role": "user",
        "content": "我昨天走了多少步？",
        "timestamp": "2024-01-15T10:30:00.123Z",
        "session_id": "session_abc",
        "file_list": []
      },
      {
        "msg_id": "a_660e8400-e29b-41d4-a716-446655440001",
        "role": "assistant",
        "content": "根据您的 Garmin 数据，您昨天走了 10,543 步。这比您的每日平均步数多出约 200 步！",
        "timestamp": "2024-01-15T10:30:02.456Z",
        "session_id": "session_abc",
        "agent": "deep",
        "provider": "openrouter",
        "model": "anthropic/claude-3.5-sonnet",
        "tool_calls": [
          {
            "tool_name": "get_health_data",
            "arguments": "{\"indicator\": \"steps\", \"date\": \"2024-01-14\"}",
            "result": "{\"value\": 10543, \"unit\": \"steps\"}"
          }
        ]
      }
    ],
    "total": 2,
    "session_id": "session_abc"
  }
}