Use vueuse useStorage instead of manually using localStorage

web/src/stores/budget.ts

@@ -1,3 +1,4 @@
+import { useStorage } from "@vueuse/core";
 import { defineStore } from "pinia";
 import { useAPI } from "./api";
 import { useAccountStore } from "./budget-account";
@@ -8,7 +9,7 @@ interface State {
 }
 
 export const useBudgetsStore = defineStore('budget', {
-    state: (): State => ({
+    state: () => useStorage<State>('budget', {
         CurrentBudgetID: null,
     }),
     getters: {