feat: 添加福安德外贸相关内容并重构产品页面

重构产品中心页面布局，添加产品展示网格和面包屑导航
更新关于页面支持多部分内容展示，包括公司简介、发展历史等
添加新的i18n翻译内容，更新品牌名称为福安德外贸
移除主题切换功能，更新欢迎邮件模板
添加多个关于页面的MDX内容，包括公司简介、发展历史等

app/[locale]/about/page.tsx

@@ -16,11 +16,12 @@ const options = {
   },
 };
 
-async function getMDXContent(locale: string) {
+async function getMDXContent(locale: string, section: string) {
   const filePath = path.join(
     process.cwd(),
     "content",
     "about",
+    section,
     `${locale}.mdx`
   );
   try {
@@ -56,9 +57,18 @@ export async function generateMetadata({
   });
 }
 
-export default async function AboutPage({ params }: { params: Params }) {
+export default async function AboutPage({
+  params,
+  searchParams
+}: {
+  params: Params;
+  searchParams: Promise<{ [key: string]: string | string[] | undefined }>;
+}) {
   const { locale } = await params;
-  const content = await getMDXContent(locale);
+  const resolvedSearchParams = await searchParams;
+  const section = (resolvedSearchParams.section as string) || "company";
+
+  const content = await getMDXContent(locale, section);
 
   return (
     <article className="w-full md:w-3/5 px-2 md:px-12">
@@ -75,4 +85,4 @@ export async function generateStaticParams() {
   return LOCALES.map((locale) => ({
     locale,
   }));
-}
+}