docs: expand VitePress user guide

sites/index.html

@@ -75,6 +75,7 @@
           <a href="#workflows">场景</a>
           <a href="#features">功能</a>
           <a href="#assistant">助手</a>
+          <a href="./docs-dist/zh/">用户手册</a>
           <a href="#faq">FAQ</a>
         </nav>
 
@@ -514,6 +515,7 @@
               选择你的桌面版本
               <span aria-hidden="true">↓</span>
             </a>
+            <a class="text-link" href="./docs-dist/zh/">阅读用户手册 <span aria-hidden="true">→</span></a>
           </div>
 
           <div class="assistant-list">
@@ -583,6 +585,7 @@
           <a href="#download">下载</a>
           <a href="#workflows">场景</a>
           <a href="#features">功能</a>
+          <a href="./docs-dist/zh/">用户手册</a>
           <a href="#faq">FAQ</a>
           <a href="https://github.com/mesalogo/goodbuddy/blob/main/README.zh-CN.md">入门指南</a>
           <a href="https://github.com/mesalogo/goodbuddy" target="_blank" rel="noreferrer">