By default, Sail looks for the `laravel.test` container when running `sail artisan`, but the `docker-compose.yml` in this project defines the service as `app`. This caused `sail artisan` and other Sail commands to fail locally.
Updated the `APP_SERVICE` environment variable in `sail` to default to `app` instead of `laravel.test`, ensuring consistency with the service name in `docker-compose.yml`.
