FIX: the cashier problem on login

src/routes/login/+page.svelte

@@ -78,6 +78,9 @@
 					case 3:
 						localStorage.setItem('flag', 'kitchen');
 						break;
+					case 4:
+						localStorage.setItem('flag', 'cashier');
+						break;
 					default:
 						localStorage.setItem('flag', '');
 				}