[Bug]: Unable to change auth guard from `web`

[Muffinman]

What happened?

In some scenarios it would be beneficial to specify the auth guard that can be used to authenticate users with Vantage. Specifically if you have a separate set of frontend users and admin users, with different auth guards.

Currently this isn't possible.

Perhaps something like this would be possible?

class AuthorizeVantage
{
    /**
     * Handle an incoming request.
     *
     * @param  Closure(Request): (Response)  $next
     */
    public function handle(Request $request, Closure $next): Response
    {
        // Try to resolve the authenticated user via the configured or default guard
        $user = Auth::guard(config('vantage.auth.guard'))->user() ?? Auth::user();

        // Authorization is fully handled by the Gate
        // The Gate accepts a null user and performs its own logic
        if (! Gate::forUser($user)->allows('viewVantage', $user)) {
            abort(403, 'Unauthorized access to Vantage dashboard.');
        }

        return $next($request);
    }
}

Vantage config:

...
    'auth' => [
        'enabled' => env('VANTAGE_AUTH_ENABLED', true),
        'guard' => env('VANTAGE_AUTH_GUARD', 'web'),
    ],
...

How to reproduce the bug

1 .Create another separate auth guard (leave web as default)
2, Attempt to authorise the user against the non-default guard

Package Version

0.1.24

PHP Version

8.4.18

Laravel Version

12.55.1

Which operating systems does this happen with?

No response

Notes

No response

[Muffinman]

The work-around is to just ignore the passed in $user value (since it will be NULL), and look up the user yourself in the gate.

Gate::define('viewVantage', function (?Authenticatable $user = null): bool {
    return (bool) Auth::guard('admin')->user()->is_developer;
});