Issue Description
子代理陷入死循环，总是查看相同文件
Steps to Reproduce
使用/ultra-review 审查代码提交
Expected Behavior
Actual Behavior
Screenshots / Screen Recordings
Operating System
Current Qoder Version (Menu → About Qoder → Copy)
反馈ID：7e8013e2-7c55-420b-8bfe-8e9578cb667a
版本: 1.7.0
VSCode 版本: 1.106.3 (system setup)
提交: 20d7181814dc1d4b692c8bcddc2f27d05f66bf4c
日期: 2026-06-10T14:01:16.983Z
Electron: 37.7.0
Chromium: 138.0.7204.251
Node.js: 22.20.0
V8: 13.8.258.32-electron.0
OS: Windows_NT x64 10.0.26200