chore: Nuxt 4 upgrade (#7426)

frontend/app/pages/group/data/index.vue

@@ -0,0 +1,11 @@
+<template>
+  <div />
+</template>
+
+<script setup lang="ts">
+const router = useRouter();
+onMounted(() => {
+  // Force redirect to first valid page
+  router.push("/group/data/foods");
+});
+</script>