Migrate route loaders and password flows to new client API

frontend/src/routes/_layout/items.tsx

@@ -11,7 +11,8 @@ import PendingItems from "@/components/Pending/PendingItems"
 
 function getItemsQueryOptions() {
   return {
-    queryFn: () => ItemsService.readItems({ skip: 0, limit: 100 }),
+    queryFn: async () =>
+      (await ItemsService.readItems({ query: { skip: 0, limit: 100 } })).data,
     queryKey: ["items"],
   }
 }