[Bug]: Race condition on branch rename stops execution of prompt

### Platform

macOS

### Operating system version

macOS Tahoe 26.2

### System architecture

ARM64 (M1, M2, etc)

### PolyScope Version

.8

### Bug description

Seem to have run into some kind of race condition. I supplied my prompt and the system renamed my branch but then stopped stating Ready for the next task.

### Steps to reproduce

_No response_

### Relevant log output

```shell

```

首先，在 macOS Tahoe 26.2 上使用 PolyScope .8 复现 prompt 执行流程，重点关注分支被重命名且执行停止的环节。报告没有提供复现步骤或日志输出，因此，完成的标准是确定竞态并确认 prompt 在分支重命名后继续执行。

由索引模型根据 Issue 内容生成。