feat: enhance demo components with consistent styling and info boxes

- Add standardized header and info box components to all demo files
- Improve visual consistency with theme colors and spacing
- Add max-height and overflow-y for better content containment
- Update package.json build script with --force flag
- Add .gitignore entries for REFACTORING files
- Fix table formatting in audio-intro.md

docs/.vitepress/theme/components/appendix/cloud-storage-cdn/HttpsOptimizationDemo.vue

@@ -1,50 +1,83 @@
 <template>
-  <div class="demo-container">
+  <div class="https-optimization-demo">
     <div class="demo-header">
-      <h4>{{ title }}</h4>
-      <p class="hint">{{ description }}</p>
+      <span class="icon">🔒</span>
+      <span class="title">HTTPS 优化</span>
+      <span class="subtitle">理解 CDN 的 HTTPS 协议和证书管理</span>
     </div>
     <div class="demo-content">
       <el-alert type="info" :closable="false">
-        HTTPS优化演示组件占位符 - 待实现具体交互
+        HTTPS 优化演示组件占位符 - 待实现具体交互
       </el-alert>
     </div>
+
+    <div class="info-box">
+      <span class="icon">💡</span>
+      <strong>核心思想：</strong>HTTPS 通过 TLS/SSL 加密数据传输，防止中间人攻击和数据泄露，是现代 Web 应用的安全基础。
+    </div>
   </div>
 </template>
 
 <script setup>
 import { ref } from 'vue'
 
-const title = ref('HTTPS优化演示')
+const title = ref('HTTPS 优化演示')
 const description = ref('展示CDN的HTTPS优化技术，包括TLS握手优化、证书管理、HSTS等')
 </script>
 
 <style scoped>
-.demo-container {
+.https-optimization-demo {
   border: 1px solid var(--vp-c-divider);
-  border-radius: 8px;
-  padding: 20px;
   background: var(--vp-c-bg-soft);
+  border-radius: 8px;
+  padding: 1.5rem;
+  margin: 1rem 0;
+  max-height: 600px;
+  overflow-y: auto;
 }
 
 .demo-header {
-  margin-bottom: 20px;
+  margin-bottom: 1rem;
 }
 
-.demo-header h4 {
-  margin: 0 0 8px 0;
-  color: var(--vp-c-text-1);
+.demo-header .icon {
+  font-size: 1.25rem;
 }
 
-.hint {
-  margin: 0;
-  font-size: 14px;
+.demo-header .title {
+  font-weight: bold;
+  font-size: 1rem;
+}
+
+.demo-header .subtitle {
   color: var(--vp-c-text-2);
+  font-size: 0.85rem;
+  margin-left: 0.5rem;
 }
 
 .demo-content {
+  margin-bottom: 1rem;
+}
+
+.info-box {
+  padding: 0.75rem;
+  background: var(--vp-c-bg-alt);
+  border: 1px solid var(--vp-c-divider);
+  border-left: 4px solid var(--vp-c-brand);
+  border-radius: 6px;
+  font-size: 0.9rem;
+  line-height: 1.6;
+  color: var(--vp-c-text-2);
+  margin-top: 0.75rem;
   display: flex;
-  flex-direction: column;
-  gap: 16px;
+  gap: 0.25rem;
+}
+
+.info-box .icon {
+  flex-shrink: 0;
+}
+
+.info-box strong {
+  color: var(--vp-c-text-1);
 }
 </style>