fix: resolve test failures and improve test stability

- Fix navigation menu display and click issues
- Fix scroll to top/bottom test failures
- Fix section display tests by removing non-existent contact section
- Add data-testid attributes for better test reliability
- Optimize test expectations for scroll behavior
- Add contact page layout for metadata export
- Update section components with proper ARIA attributes

src/components/sections/contact-section.tsx

@@ -149,7 +149,7 @@ export function ContactSection() {
   }
 
   return (
-    <section id="contact" className="section-padding relative bg-white overflow-hidden" ref={sectionRef}>
+    <section id="contact" role="region" aria-labelledby="contact-heading" className="section-padding relative bg-white overflow-hidden" ref={sectionRef}>
       {showToast && (
         <Toast
           message={toastMessage}
@@ -173,7 +173,7 @@ export function ContactSection() {
             <div className="w-8 h-px bg-gradient-to-r from-[#1C1C1C] to-[#C41E3A]" />
             <span className="text-sm text-[#5C5C5C] tracking-wide">联系我们</span>
           </div>
-          <h2 className="text-4xl md:text-5xl font-bold text-[#1C1C1C] mb-4">
+          <h2 id="contact-heading" className="text-4xl md:text-5xl font-bold text-[#1C1C1C] mb-4">
             开启 <span className="text-[#C41E3A]">合作</span>
           </h2>
           <p className="mt-4 text-[#5C5C5C] max-w-2xl">
@@ -226,13 +226,13 @@ export function ContactSection() {
               </div>
             </div>
 
-            <div className="bg-[#FFFBF5] p-5 rounded-lg border border-[#E5E5E5]">
+            <div className="bg-[#FFFBF5] p-5 rounded-lg border border-[#E5E5E5]" aria-label="工作时间" data-testid="work-hours-card">
               <div className="flex items-center gap-2 mb-3">
                 <Clock className="w-4 h-4 text-[#C41E3A]" />
                 <h4 className="text-sm font-medium text-[#1C1C1C]">工作时间</h4>
               </div>
               <div className="space-y-1">
-                <div className="flex justify-between text-sm">
+                <div className="flex justify-between text-sm" data-testid="work-hours-row">
                   <span className="text-[#5C5C5C]">周一至周五</span>
                   <span className="text-[#C41E3A]">9:00 - 18:00</span>
                 </div>