feat: add parent PIN setup functionality and email notifications

- Implemented User model updates to include PIN and related fields.
- Created email sender utility for sending verification and reset emails.
- Developed ParentPinSetup component for setting up a parent PIN with verification code.
- Enhanced UserProfile and EntityEditForm components to support new features.
- Updated routing to include PIN setup and authentication checks.
- Added styles for new components and improved existing styles for consistency.
- Introduced loading states and error handling in various components.

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

@@ -1,16 +1,21 @@
-import { ref } from 'vue'
+import { ref, watch } from 'vue'
 
-export const isParentAuthenticated = ref(false)
+export const isParentAuthenticated = ref(localStorage.getItem('isParentAuthenticated') === 'true')
 export const isUserLoggedIn = ref(false)
 export const isAuthReady = ref(false)
 export const currentUserId = ref('')
 
+watch(isParentAuthenticated, (val) => {
+  localStorage.setItem('isParentAuthenticated', val ? 'true' : 'false')
+})
+
 export function authenticateParent() {
   isParentAuthenticated.value = true
 }
 
 export function logoutParent() {
   isParentAuthenticated.value = false
+  localStorage.removeItem('isParentAuthenticated')
 }
 
 export function loginUser() {