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/invitations/[token].vue

@@ -6,6 +6,8 @@ import { requiredValidator } from '@core/utils/validators'
 import { VNodeRenderer } from '@layouts/components/VNodeRenderer'
 import { themeConfig } from '@themeConfig'
 import type { OrganisationRole } from '@/types/member'
+import type { AxiosError } from 'axios'
+import type { ApiErrorResponse } from '@/types/auth'
 
 definePage({
   meta: {
@@ -68,8 +70,8 @@ function onSubmit() {
           authStore.setUser(response.data.user)
           router.replace('/dashboard')
         },
-        onError: (err: any) => {
-          const data = err.response?.data
+        onError: (err: Error) => {
+          const data = (err as AxiosError<ApiErrorResponse>).response?.data
           if (data?.errors) {
             errors.value = {
               name: data.errors.name?.[0] ?? '',