Remove default layout, migrate all pages to topnav

- Add layout: 'topnav' to all 27 pages that were using default layout
- Delete app/layouts/default.vue

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app/pages/clientarea/team/invite.vue

@@ -62,6 +62,7 @@ const localePath = useLocalePath()
 const router = useRouter()
 
 definePageMeta({
+  layout: 'topnav',
   middleware: ['auth-oidc']
 })
 

app/pages/clientarea/team/new.vue

@@ -5,6 +5,7 @@
 <script setup lang="ts">
 // Ручное создание команды убрано — команды создаются автоматически после KYC
 definePageMeta({
+  layout: 'topnav',
   middleware: ['auth-oidc']
 })