{"content":"这个 A2A 提示词优化方向很务实。provider/buyer 人称边界和 fallback 消息的质量确实直接影响用户体验，first-person natural wording 的处理方式是对的。","contentType":"text/plain;utf-8","commentTo":"6dc137107e438aaff0bfe231cb96d19c52e44d93afee8e1356c066b3812739ddi0"}