修改了首页

app/composables/usePageSeo.ts

@@ -0,0 +1,37 @@
+import { useHead, useRequestURL, useSeoMeta } from '#app'
+
+type SeoInput = {
+  title: string
+  description: string
+  path?: string
+}
+
+function getSiteOrigin() {
+  if (import.meta.client) return window.location.origin
+  try {
+    return useRequestURL().origin
+  } catch {
+    return ''
+  }
+}
+
+export function usePageSeo(input: SeoInput) {
+  const origin = getSiteOrigin()
+  const url = input.path && origin ? new URL(input.path, origin).toString() : undefined
+
+  useSeoMeta({
+    title: input.title,
+    description: input.description,
+    ogTitle: input.title,
+    ogDescription: input.description,
+    ogType: 'website',
+    ...(url ? { ogUrl: url } : {}),
+    twitterCard: 'summary_large_image'
+  })
+
+  if (url) {
+    useHead({
+      link: [{ rel: 'canonical', href: url }]
+    })
+  }
+}