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]/(marketing)/layout.tsx

@@ -0,0 +1,22 @@
+import { requireUser } from '@kit/supabase/require-user';
+import { getSupabaseServerClient } from '@kit/supabase/server-client';
+
+import { SiteFooter } from '~/(marketing)/_components/site-footer';
+import { SiteHeader } from '~/(marketing)/_components/site-header';
+
+async function SiteLayout(props: React.PropsWithChildren) {
+  const client = getSupabaseServerClient();
+  const user = await requireUser(client, { verifyMfa: false });
+
+  return (
+    <div className={'flex min-h-[100vh] flex-col'}>
+      <SiteHeader user={user.data} />
+
+      {props.children}
+
+      <SiteFooter />
+    </div>
+  );
+}
+
+export default SiteLayout;