Cannot install shell integrations

### Checks

- [x] I have searched [github.com/aws/amazon-q-developer-cli/issues](https://github.com/aws/amazon-q-developer-cli/issues?q=) and there are no duplicates of my issue

### Operating system

macOS 15.5.0 (24F74)

### Expected behaviour

Cannot install *Shell integrations*, these are the errors received.

```
Error: fish (/Users/****/.config/fish/conf.d/00_fig_pre.fish): Permissions denied for /Users/****/.config/fish/conf.d

To automatically fix the permissions run: sudo q debug fix-permissions

Error: Permission denied (os error 13)

fish (/Users/****/.config/fish/conf.d/99_fig_post.fish): Permissions denied for /Users/****/.config/fish/conf.d

To automatically fix the permissions run: sudo q debug fix-permissions

Error: Permission denied (os error 13)
```

### Actual behaviour


### Steps to reproduce

_No response_

从报告中的 macOS fish 路径 ~/.config/fish/conf.d/00_fig_pre.fish 和 99_fig_post.fish 开始，并重现 shell 集成安装期间的权限错误。将其行为与建议的 sudo q debug fix-permissions 命令进行比较；当 shell 集成能够安装且不再出现报告的权限被拒绝错误时，即视为完成。

由索引模型根据 Issue 内容生成。