fix: eliminate all TypeScript any usage across Vue components

Replace 24 `err: any` error handler types with proper `AxiosError<ApiErrorResponse>`
typing. Fix additional `as any` casts and `Record<string, any>` patterns in registration
field components, event settings, and portal layout. Create shared `ApiErrorResponse`
type for portal app.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/app/src/pages/events/[id]/settings/index.vue

@@ -3,7 +3,7 @@ import { VForm } from 'vuetify/components/VForm'
 import EventTabsNav from '@/components/events/EventTabsNav.vue'
 import { useUpdateEvent, useUploadEventImage } from '@/composables/api/useEvents'
 import { useAuthStore } from '@/stores/useAuthStore'
-import type { EventItem } from '@/types/event'
+import type { EventItem, UpdateEventPayload } from '@/types/event'
 
 definePage({
   meta: {
@@ -55,7 +55,7 @@ function onFileSelected(files: File[], type: 'banner' | 'logo') {
 function onClearImage(event: EventItem, type: 'banner' | 'logo') {
   const field = type === 'banner' ? 'registration_banner_url' : 'registration_logo_url'
 
-  updateEvent({ [field]: null } as any)
+  updateEvent({ [field]: null } as UpdateEventPayload)
 }
 </script>
 

apps/app/src/pages/events/[id]/settings/registration-fields.vue

@@ -15,7 +15,7 @@ import {
 } from '@/composables/api/useRegistrationFormFields'
 import { useAuthStore } from '@/stores/useAuthStore'
 import { useNotificationStore } from '@/stores/useNotificationStore'
-import type { RegistrationFormField } from '@/types/registration-form-field'
+import type { RegistrationFormField, RegistrationFormFieldCreateDTO } from '@/types/registration-form-field'
 import type { EventItem } from '@/types/event'
 
 definePage({
@@ -97,7 +97,7 @@ function openEditDialog(field: RegistrationFormField) {
   isFieldDialogOpen.value = true
 }
 
-function onSaveField(payload: Record<string, any>) {
+function onSaveField(payload: Partial<RegistrationFormFieldCreateDTO>) {
   if (editingField.value) {
     updateField(
       { id: editingField.value.id, ...payload },
@@ -111,7 +111,7 @@ function onSaveField(payload: Record<string, any>) {
     )
   }
   else {
-    createField(payload as any, {
+    createField(payload as RegistrationFormFieldCreateDTO, {
       onSuccess: () => {
         isFieldDialogOpen.value = false
         notificationStore.show(`${payload.label} aangemaakt`, 'success')