fix(lint): Header.tsx 的 <a href="/..."> 改 next/link <Link>

修 CI lint error: @next/next/no-html-link-for-pages

Author: longsizhuo

app/components/Header.tsx

@@ -1,3 +1,4 @@
+import Link from "next/link";
 import { ThemeToggle } from "./ThemeToggle";
 import { Button } from "@/components/ui/button";
 import { MessageCircle } from "lucide-react";
@@ -30,42 +31,42 @@ export function Header() {
 
         <div className="flex items-center justify-between h-10">
           <nav className="hidden md:flex items-center gap-8 font-sans text-xs font-bold uppercase tracking-widest text-[var(--foreground)]">
-            <a
+            <Link
               href="/"
               className="hover:text-[#CC0000] transition-colors"
               data-umami-event="navigation_click"
               data-umami-event-region="header"
               data-umami-event-label="home"
             >
               首页
-            </a>
-            <a
+            </Link>
+            <Link
               href="/#features"
               className="hover:text-[#CC0000] transition-colors"
               data-umami-event="navigation_click"
               data-umami-event-region="header"
               data-umami-event-label="features"
             >
               特点
-            </a>
-            <a
+            </Link>
+            <Link
               href="/#community"
               className="hover:text-[#CC0000] transition-colors"
               data-umami-event="navigation_click"
               data-umami-event-region="header"
               data-umami-event-label="community"
             >
               社区
-            </a>
-            <a
+            </Link>
+            <Link
               href="/#contact"
               className="hover:text-[#CC0000] transition-colors"
               data-umami-event="navigation_click"
               data-umami-event-region="header"
               data-umami-event-label="contact"
             >
               联系我们
-            </a>
+            </Link>
           </nav>
 
           <div className="flex items-center gap-2">