feat: Implement logic to prevent deletion of system tasks and rewards; update APIs and tests accordingly

frontend/vue-app/src/stores/auth.ts

@@ -1,12 +1,19 @@
 import { ref, watch } from 'vue'
 
-export const isParentAuthenticated = ref(localStorage.getItem('isParentAuthenticated') === 'true')
+const hasLocalStorage =
+  typeof localStorage !== 'undefined' && typeof localStorage.getItem === 'function'
+
+export const isParentAuthenticated = ref(
+  hasLocalStorage ? localStorage.getItem('isParentAuthenticated') === 'true' : false,
+)
 export const isUserLoggedIn = ref(false)
 export const isAuthReady = ref(false)
 export const currentUserId = ref('')
 
 watch(isParentAuthenticated, (val) => {
-  localStorage.setItem('isParentAuthenticated', val ? 'true' : 'false')
+  if (hasLocalStorage && typeof localStorage.setItem === 'function') {
+    localStorage.setItem('isParentAuthenticated', val ? 'true' : 'false')
+  }
 })
 
 export function authenticateParent() {
@@ -15,7 +22,9 @@ export function authenticateParent() {
 
 export function logoutParent() {
   isParentAuthenticated.value = false
-  localStorage.removeItem('isParentAuthenticated')
+  if (hasLocalStorage && typeof localStorage.removeItem === 'function') {
+    localStorage.removeItem('isParentAuthenticated')
+  }
 }
 
 export function loginUser() {