[BUG] 双击 ESC 回滚会话后，Task 列表未清理

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

当用户在会话中使用 TaskCreate 创建了 task 后，若通过双击 ESC 回滚/撤销会话，task 列表中已创建的任务不会被清理，导致残留。

What Should Happen?

回滚会话后，该会话创建的 task 应一并被清理。

Error Messages/Logs

Steps to Reproduce

1. 在会话中创建 task：TaskCreate({subject: "test", description: "test"})
2. 双击 ESC 回滚会话
3. 检查 task 列表：TaskList → 之前的 task 仍然存在

Claude Model

Other

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.150

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_