优化页面数据加载并完善多语言 SEO、新闻回退、主题首屏及自动化回归测试

src/app/[locale]/news/[slug]/page.tsx

@@ -2,6 +2,7 @@ import { notFound } from "next/navigation";
 import { getNewsBySlug, getNewsList } from "@/data/news";
 import { NewsDetailClient } from "@/components/news/news-detail-client";
 import { isLocale } from "@/lib/i18n";
+import { descriptionFromMarkdown, pageMetadata } from "@/lib/seo";
 
 export async function generateStaticParams() {
   return (await getNewsList()).map((item) => ({ slug: item.slug }));
@@ -11,11 +12,14 @@ export async function generateMetadata({ params }: { params: Promise<{ slug: str
   const { slug, locale } = await params;
   if (!isLocale(locale)) notFound();
   const item = await getNewsBySlug(slug, locale);
-  return { title: item?.title ?? "新闻" };
+  if (!item) notFound();
+  return pageMetadata(locale, item.href, { title: item.title, description: descriptionFromMarkdown(item.body), article: true });
 }
 
 export default async function NewsDetailPage({ params }: { params: Promise<{ slug: string; locale: string }> }) {
   const { slug, locale } = await params;
   if (!isLocale(locale)) notFound();
-  return <NewsDetailClient item={await getNewsBySlug(slug, locale)} locale={locale} />;
+  const item = await getNewsBySlug(slug, locale);
+  if (!item) notFound();
+  return <NewsDetailClient item={item} locale={locale} />;
 }