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_

Begin with the reported macOS fish paths, ~/.config/fish/conf.d/00_fig_pre.fish and 99_fig_post.fish, and reproduce the permissions error during shell integration installation. Compare the behavior with the suggested sudo q debug fix-permissions command; done means shell integrations install without the reported permission-denied errors.

Written by the indexing model from the issue text.