[Bug] Windows 10: Integrated terminal shell selector ignored

提交前确认 · Pre-submission checklist

• 我已搜索过现有 issue，确认这不是重复 / I searched existing issues and confirmed this isn't a duplicate.
• 我已阅读 CONTRIBUTING.md / I've read CONTRIBUTING.md.

问题类别 · Category

UI / 界面体验 · UI / UX

涉及的 Agent 框架 · Agent framework

ZCode Agent（自研）

严重程度 · Severity

阻塞使用 · Blocking (无法使用核心功能 / core function unusable)

复现频率 · Reproducibility

必现 · Always

问题描述 · Description

Windows 10: Integrated terminal shell selector ignored; always launches PowerShell
ZCode version: [your version]
Git Bash and CMD both selected in Settings, but every newly created terminal still opens PowerShell. Persists after full app restart and Windows reboot. Git Bash works normally outside ZCode.

复现步骤 · Steps to reproduce

Disable 'Inherit terminal' and select 'terminal: bash' in settings. Create a new terminal. (It is still PS after reload or reboot).

期望表现 · Expected behavior

Should create new bash terminals after selecting Git Bash for the terminal in settings.

实际表现 · Actual behavior

Git Bash and CMD both selected in Settings, but every newly created terminal still opens PowerShell. Persists after full app restart and Windows reboot. Git Bash works normally outside ZCode.

ZCode 版本 · ZCode version

3.7.3

设备 / 系统 / 浏览器 · Device / OS / Browser

Windows 10 19045.3930

截图 / 录屏 / 日志 · Screenshots / Recordings / Logs

No response

Start by reproducing the issue in ZCode 3.7.3 on Windows 10: disable “Inherit terminal,” select Git Bash or bash in the terminal settings, and create a new integrated terminal. Trace the terminal shell selection from the settings entry point to terminal creation; done means newly created terminals use Git Bash instead of PowerShell and the behavior persists after restart.