Ask HN：为什么主流 AI 智能体都无法跨会话持久化记忆？
ChatGPT 的“记忆”功能本质上只是一个记事本；Claude 的 CLAUDE.md 需要手动维护。没有任何 AI 智能体真正从过往交互中学习。这是技术上的根本性难题，还是单纯没有被列为优先事项？
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