- Install `diglactic/laravel-breadcrumbs` and update composer dependencies.
- Configure breadcrumbs in `config/breadcrumbs.php`.
- Define breadcrumbs for admin and site views.
- Update base admin controller to include default breadcrumb view.
Otherwise phpstorm doesn't understand the paths correctly. He thinks that this is not a complete application, but a package. And when creating a class, the namespace indicates “app” with a small letter, but should be “App”.