feat: disables registration form

app/Http/Controllers/Auth/RegisteredUserController.php

@@ -16,6 +16,7 @@
 use Illuminate\Support\Facades\Hash;
 use Illuminate\Validation\Rules;
 use Illuminate\View\View;
+use Illuminate\Validation\ValidationException;
 
 final readonly class RegisteredUserController
 {
@@ -43,6 +44,12 @@ public function store(Request $request): RedirectResponse
             'g-recaptcha-response' => app()->environment('production') ? ['required', new Recaptcha($request->ip())] : [],
         ]);
 
+        if (app()->environment('production')) {
+            throw ValidationException::withMessages([
+                'email' => 'We have temporarily disabled registration due to spam. We will try to enable it as soon as possible.',
+            ]);
+        }
+
         $user = User::create([
             'name' => $request->name,
             'email' => $request->email,