Next.js Supabase V3 (#463)

Version 3 of the kit:
- Radix UI replaced with Base UI (using the Shadcn UI patterns)
- next-intl replaces react-i18next
- enhanceAction deprecated; usage moved to next-safe-action
- main layout now wrapped with [locale] path segment
- Teams only mode
- Layout updates
- Zod v4
- Next.js 16.2
- Typescript 6
- All other dependencies updated
- Removed deprecated Edge CSRF
- Dynamic Github Action runner

apps/web/app/[locale]/admin/_components/mobile-navigation.tsx

@@ -0,0 +1,30 @@
+import Link from 'next/link';
+
+import { Menu } from 'lucide-react';
+
+import {
+  DropdownMenu,
+  DropdownMenuContent,
+  DropdownMenuItem,
+  DropdownMenuTrigger,
+} from '@kit/ui/dropdown-menu';
+
+export function AdminMobileNavigation() {
+  return (
+    <DropdownMenu>
+      <DropdownMenuTrigger>
+        <Menu className={'h-8 w-8'} />
+      </DropdownMenuTrigger>
+
+      <DropdownMenuContent>
+        <DropdownMenuItem>
+          <Link href={'/admin'}>Home</Link>
+        </DropdownMenuItem>
+
+        <DropdownMenuItem>
+          <Link href={'/admin/accounts'}>Accounts</Link>
+        </DropdownMenuItem>
+      </DropdownMenuContent>
+    </DropdownMenu>
+  );
+}