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/components/event/RegistrationFieldFormDialog.vue

@@ -2,8 +2,11 @@
 import { VForm } from 'vuetify/components/VForm'
 import { usePersonTagCategories } from '@/composables/api/usePersonTags'
 import { requiredValidator } from '@core/utils/validators'
-import type { RegistrationFormField } from '@/types/registration-form-field'
+import type { RegistrationFormField, RegistrationFormFieldCreateDTO } from '@/types/registration-form-field'
+import type { RegistrationFieldType } from '@/types/registration-field-template'
 import { FIELD_TYPE_LABELS, FIELD_TYPES_WITH_OPTIONS } from '@/types/registration-field-template'
+import type { AxiosError } from 'axios'
+import type { ApiErrorResponse } from '@/types/auth'
 
 const props = defineProps<{
   orgId: string
@@ -12,7 +15,7 @@ const props = defineProps<{
 }>()
 
 const emit = defineEmits<{
-  save: [payload: Record<string, any>]
+  save: [payload: Partial<RegistrationFormFieldCreateDTO>]
   'update:modelValue': [value: boolean]
 }>()
 
@@ -46,7 +49,7 @@ const dialogTitle = computed(() =>
 )
 
 const showOptions = computed(() =>
-  FIELD_TYPES_WITH_OPTIONS.includes(form.value.field_type as any),
+  (FIELD_TYPES_WITH_OPTIONS as readonly string[]).includes(form.value.field_type),
 )
 
 const showTagCategory = computed(() => form.value.field_type === 'tag_picker')
@@ -87,7 +90,7 @@ function onSubmit() {
     if (!valid) return
 
     errors.value = {}
-    const payload: Record<string, any> = {
+    const payload: Partial<RegistrationFormFieldCreateDTO> = {
       label: form.value.label,
       is_required: form.value.is_required,
       is_filterable: form.value.is_filterable,
@@ -98,7 +101,7 @@ function onSubmit() {
     }
 
     if (!props.field) {
-      payload.field_type = form.value.field_type
+      payload.field_type = form.value.field_type as RegistrationFieldType
     }
 
     if (showOptions.value) {
@@ -119,8 +122,8 @@ function onSubmit() {
   })
 }
 
-function setErrors(err: any) {
-  const data = err.response?.data
+function setErrors(err: Error) {
+  const data = (err as AxiosError<ApiErrorResponse>).response?.data
   if (data?.errors) {
     errors.value = Object.fromEntries(
       Object.entries(data.errors).map(([k, v]) => [k, (v as string[])[0]]),