在 agent run 过程中插入消息

查阅代码 没找到有任何方式可以在 agent.run 过程中插入消息 但是这是一个非常常见的需求

例如用户和 agent 交互，需要插入消息到队列中更新 agent 执行逻辑

Start by tracing the agent.run entry point and the queue-handling code mentioned in the issue. Determine how messages are represented and processed during an active run, then define the insertion behavior and its completion criteria with the maintainers, since no specific files or tests are identified.

Written by the indexing model from the issue text.