add test batches

app/Http/Controllers/Api/Finance/PaymentManualController.php

@@ -110,10 +110,12 @@ class PaymentManualController extends BaseApiController
     public function file(Request $request, string $filename)
     {
         $mode = (string) ($request->query('mode') ?? 'download');
-
         return $this->service->serveCheckFile($filename, $mode);
     }
 
+    /**
+     * @return int|JsonResponse
+     */
     private function authenticatedUserIdOrUnauthorized(): int|JsonResponse
     {
         $userId = (int) (auth()->id() ?? 0);