Agregue middleware a productos Destroy y Edit. Y cambios en la vista de stock.

bootstrap/app.php

@@ -12,6 +12,9 @@ return Application::configure(basePath: dirname(__DIR__))
     )
     ->withMiddleware(function (Middleware $middleware): void {
         //
+        $middleware->alias([
+            'admin' => \App\Http\Middleware\CheckAdmin::class,
+        ]);
     })
     ->withExceptions(function (Exceptions $exceptions): void {
         //