[General] In settings, please allow me to turn off worktrees globally, as some people m...

**Mood:** 😔
**Category:** General

In settings, please allow me to turn off worktrees globally, as some people might not use it at all. It should be a user preference.

---
| Field | Value |
| --- | --- |
| App version | 0.2.24 |
| OS | Windows 10.0.26200 |
| Theme | Notionish |
| Path | /chat |
| Tenure | Day 1 |

首先定位应用的设置入口点和现有的 worktree 处理逻辑。添加一个持久化的用户偏好设置，用于全局禁用 worktrees，然后验证在原本会使用 worktrees 的所有位置都会遵循该设置。

由索引模型根据 Issue 内容生成。