fix unit tests

src/routes/admin.routes.ts

@@ -84,7 +84,11 @@ const emptySchema = z.object({});
 
 const router = Router();
 
-const upload = createUploadMiddleware({ storageType: 'flyer' });
+const brandLogoUpload = createUploadMiddleware({
+  storageType: 'flyer', // Using flyer storage path is acceptable for brand logos.
+  fileSize: 2 * 1024 * 1024, // 2MB limit for logos
+  fileFilter: 'image',
+});
 
 // --- Bull Board (Job Queue UI) Setup ---
 const serverAdapter = new ExpressAdapter();
@@ -239,7 +243,7 @@ router.put(
 router.post(
   '/brands/:id/logo',
   validateRequest(numericIdParam('id')),
-  upload.single('logoImage'),
+  brandLogoUpload.single('logoImage'),
   requireFileUpload('logoImage'),
   async (req: Request, res: Response, next: NextFunction) => {
     const { params } = req as unknown as z.infer<ReturnType<typeof numericIdParam>>;