upgrade to tamagui v2 and guest pwa overhaul

resources/js/guest-v2/screens/NotFoundScreen.tsx

@@ -0,0 +1,26 @@
+import React from 'react';
+import { YStack } from '@tamagui/stacks';
+import { SizableText as Text } from '@tamagui/text';
+import { useTranslation } from '@/guest/i18n/useTranslation';
+
+export default function NotFoundScreen() {
+  const { t } = useTranslation();
+
+  return (
+    <YStack
+      minHeight="100vh"
+      alignItems="center"
+      justifyContent="center"
+      backgroundColor="$background"
+      padding="$4"
+      gap="$2"
+    >
+      <Text fontSize="$6" fontWeight="$7">
+        {t('notFound.title', 'Seite nicht gefunden')}
+      </Text>
+      <Text fontSize="$3" color="$color" opacity={0.72}>
+        {t('notFound.description', 'Die Seite konnte nicht gefunden werden.')}
+      </Text>
+    </YStack>
+  );
+}