When the "Repos directory" setting is changed (e.

When the "Repos directory" setting is changed (e.g. from ~/.copilot/repos to ~/repos), existing projects retain their original main_repo_path in the projects table and root_resource_uri in the project_checkouts table. This causes worktree creation to fail for those projects because the app tries to run git worktree add from a main checkout path that no longer exists.

---
| Field | Value |
| --- | --- |
| App version | 1.0.21 |
| OS | macOS 26.5.2 |
| Theme | GitHub |
| Path | /chat |
| Tenure | Day 4 (Week 1) |

从 /chat 设置流程开始，跟踪更改 Repos 目录如何影响 projects 表和 project_checkouts 表。检查这些存储的路径在创建 git worktree 时是如何使用的；完成的标准是现有项目使用新的有效 checkout 位置，并且设置更改后 worktree 创建成功。

由索引模型根据 Issue 内容生成。