feat(about): 添加导航项的无障碍标签并优化二维码加载逻辑

- 为首页和博客导航链接增加 aria-label 属性以提升无障碍访问性
- 移除微信公众号模态框中失效的二维码降级提示注释
- 删除冗余的 moments.js 和粒子系统相关脚本文件内容

about.html

@@ -74,7 +74,7 @@
             </a>
 
             <div class="nav-menu">
-                <a href="index.html" class="nav-item">
+                <a href="index.html" class="nav-item" aria-label="Home">
                     <i class="ri-home-smile-2-line"></i>
                     <span class="nav-label" data-i18n="nav.home">首页</span>
                 </a>
@@ -82,7 +82,7 @@
                     <i class="ri-user-3-line"></i>
                     <span class="nav-label" data-i18n="nav.about">关于</span>
                 </a>
-                <a href="https://blog.hehouhui.cn" class="nav-item">
+                <a href="https://blog.hehouhui.cn" class="nav-item" aria-label="Honesty Blog">
                     <i class="ri-quill-pen-line"></i>
                     <span class="nav-label" data-i18n="nav.blog">博客</span>
                 </a>
@@ -321,7 +321,6 @@
             <h3 data-i18n="modal.wechat">Official Account</h3>
             <div class="qr-box">
                 <img src="./images/mp-honesy.jpg" alt="WeChat QR" onerror="this.style.display='none';this.nextElementSibling.style.display='block'" loading="lazy" width="200" height="200">
-<!--                <div class="qr-fallback">QR Load Failed</div>-->
             </div>
             <p data-i18n="modal.desc">Scan to follow Tech Share</p>
         </div>