improvement: add record migration and correct state normalization in new code

lib/frontend/stores/eventStore.js

@@ -1,9 +1,12 @@
 import { writable } from 'svelte/store'
 
 import { STORAGE_KEYS } from '../services/storageListener'
+import { migrateRecord, sortRecords }  from '../../static/app/storage'
 
 const createEventStore = () => {
   const state = JSON.parse(localStorage.getItem(STORAGE_KEYS.EVENTS) || '[]')
+    .map(migrateRecord)
+    .sort(sortRecord)
 
   const { subscribe, set, update } = writable(state)