feat(docs): enhance interactive demos and improve documentation

- Add new interactive components for frontend routing, browser rendering pipeline, and database transactions
- Improve existing demos with better visuals, explanations, and examples
- Update documentation structure and content for better clarity
- Add new utility scripts and update package.json with new commands
- Fix formatting and alignment in documentation tables

docs/.vitepress/theme/components/appendix/browser-rendering-pipeline/LayoutReflowDemo.vue

@@ -1,50 +1,283 @@
 <template>
-  <div class="demo-container">
+  <div class="layout-reflow-demo">
     <div class="demo-header">
-      <h4>{{ title }}</h4>
-      <p class="hint">{{ description }}</p>
+      <span class="icon">📐</span>
+      <span class="title">布局与重排</span>
+      <span class="subtitle">看看布局计算如何影响页面</span>
     </div>
+
     <div class="demo-content">
-      <el-alert type="info" :closable="false">
-        布局重排演示组件占位符 - 待实现具体交互
-      </el-alert>
+      <div class="control-panel">
+        <div class="control-group">
+          <label>选择要修改的属性：</label>
+          <select v-model="selectedProperty" @change="resetDemo">
+            <option value="transform">transform: translateY() (只触发合成)</option>
+            <option value="width">width (触发重排)</option>
+            <option value="marginLeft">margin-left (触发重排)</option>
+          </select>
+        </div>
+        <button class="toggle-btn" @click="toggleAnimation">
+          {{ isAnimating ? '停止动画' : '开始动画' }}
+        </button>
+      </div>
+
+      <div class="visualization">
+        <div class="element-container">
+          <div
+            class="animated-element"
+            :class="{ animating: isAnimating }"
+            :style="elementStyle"
+          >
+            <span class="element-label">盒子</span>
+          </div>
+          <div class="neighbor-element">
+            <span class="element-label">邻居元素</span>
+          </div>
+        </div>
+
+        <div class="stats-panel">
+          <div class="stat-item">
+            <span class="stat-label">触发阶段：</span>
+            <span class="stat-value" :class="statClass">{{ currentStage }}</span>
+          </div>
+          <div class="stat-item">
+            <span class="stat-label">性能影响：</span>
+            <span class="stat-value" :class="performanceClass">{{ performanceImpact }}</span>
+          </div>
+          <div class="stat-item">
+            <span class="stat-label">是否影响其他元素：</span>
+            <span class="stat-value">{{ affectsOthers }}</span>
+          </div>
+        </div>
+      </div>
+    </div>
+
+    <div class="info-box">
+      <span class="icon">💡</span>
+      <strong>核心要点：</strong>布局属性（如 width、margin）会触发重排，影响周围元素的位置。而 transform 只触发合成，在 GPU 上处理，不影响其他元素，性能更好。
     </div>
   </div>
 </template>
 
 <script setup>
-import { ref } from 'vue'
+import { ref, computed } from 'vue'
 
-const title = ref('布局重排演示')
-const description = ref('展示浏览器渲染过程中的布局计算和重排机制')
+const selectedProperty = ref('transform')
+const isAnimating = ref(false)
+
+const elementStyle = computed(() => {
+  if (!isAnimating.value) return {}
+
+  if (selectedProperty.value === 'transform') {
+    return { transform: 'translateY(20px)' }
+  } else if (selectedProperty.value === 'width') {
+    return { width: '150px' }
+  } else if (selectedProperty.value === 'marginLeft') {
+    return { marginLeft: '20px' }
+  }
+  return {}
+})
+
+const currentStage = computed(() => {
+  if (!isAnimating.value) return '无'
+
+  if (selectedProperty.value === 'transform') {
+    return '合成（Composite）'
+  }
+  return '布局（Layout）+ 重绘（Paint）+ 合成'
+})
+
+const performanceClass = computed(() => {
+  if (!isAnimating.value) return ''
+  return selectedProperty.value === 'transform' ? 'good' : 'bad'
+})
+
+const performanceImpact = computed(() => {
+  if (!isAnimating.value) return '-'
+
+  if (selectedProperty.value === 'transform') {
+    return '低（GPU加速）'
+  }
+  return '高（CPU计算）'
+})
+
+const affectsOthers = computed(() => {
+  if (!isAnimating.value) return '-'
+
+  if (selectedProperty.value === 'transform') {
+    return '否'
+  }
+  return '是（需要重新计算）'
+})
+
+function toggleAnimation() {
+  isAnimating.value = !isAnimating.value
+}
+
+function resetDemo() {
+  isAnimating.value = false
+}
 </script>
 
 <style scoped>
-.demo-container {
+.layout-reflow-demo {
   border: 1px solid var(--vp-c-divider);
   border-radius: 8px;
-  padding: 20px;
   background: var(--vp-c-bg-soft);
+  padding: 1rem;
+  margin: 1rem 0;
 }
 
 .demo-header {
-  margin-bottom: 20px;
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+  margin-bottom: 1rem;
 }
 
-.demo-header h4 {
-  margin: 0 0 8px 0;
-  color: var(--vp-c-text-1);
+.demo-header .icon { font-size: 1.25rem; }
+.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 {
+  background: var(--vp-c-bg);
+  border-radius: 6px;
+  padding: 1rem;
 }
 
-.hint {
-  margin: 0;
-  font-size: 14px;
+.control-panel {
+  display: flex;
+  align-items: center;
+  gap: 1rem;
+  margin-bottom: 1rem;
+  flex-wrap: wrap;
+}
+
+.control-group {
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+}
+
+.control-group label {
+  font-size: 0.9rem;
   color: var(--vp-c-text-2);
 }
 
-.demo-content {
+.control-group select {
+  padding: 0.4rem 0.6rem;
+  border: 1px solid var(--vp-c-divider);
+  border-radius: 4px;
+  background: var(--vp-c-bg-soft);
+  color: var(--vp-c-text-1);
+  font-size: 0.9rem;
+  cursor: pointer;
+}
+
+.toggle-btn {
+  padding: 0.4rem 1rem;
+  background: var(--vp-c-brand);
+  color: white;
+  border: none;
+  border-radius: 4px;
+  font-size: 0.9rem;
+  cursor: pointer;
+  transition: background 0.2s;
+}
+
+.toggle-btn:hover {
+  background: var(--vp-c-brand-dark);
+}
+
+.visualization {
   display: flex;
   flex-direction: column;
-  gap: 16px;
+  gap: 1rem;
 }
+
+.element-container {
+  display: flex;
+  flex-direction: column;
+  gap: 0.5rem;
+  padding: 1rem;
+  background: var(--vp-c-bg-soft);
+  border-radius: 6px;
+  min-height: 150px;
+}
+
+.animated-element {
+  width: 100px;
+  height: 60px;
+  background: var(--vp-c-brand);
+  color: white;
+  border-radius: 6px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  transition: all 0.3s ease;
+}
+
+.neighbor-element {
+  width: 100px;
+  height: 60px;
+  background: var(--vp-c-text-3);
+  color: white;
+  border-radius: 6px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  transition: margin-left 0.3s ease;
+}
+
+.element-label {
+  font-size: 0.85rem;
+  font-weight: 500;
+}
+
+.stats-panel {
+  display: grid;
+  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
+  gap: 0.75rem;
+  padding-top: 0.75rem;
+  border-top: 1px solid var(--vp-c-divider);
+}
+
+.stat-item {
+  display: flex;
+  flex-direction: column;
+  gap: 0.25rem;
+  padding: 0.5rem;
+  background: var(--vp-c-bg-soft);
+  border-radius: 4px;
+}
+
+.stat-label {
+  font-size: 0.8rem;
+  color: var(--vp-c-text-2);
+}
+
+.stat-value {
+  font-size: 0.9rem;
+  font-weight: 500;
+  color: var(--vp-c-text-1);
+}
+
+.stat-value.good {
+  color: var(--vp-c-success);
+}
+
+.stat-value.bad {
+  color: var(--vp-c-danger);
+}
+
+.info-box {
+  background: var(--vp-c-bg-alt);
+  padding: 0.75rem;
+  border-radius: 6px;
+  font-size: 0.85rem;
+  color: var(--vp-c-text-2);
+  margin-top: 1rem;
+}
+
+.info-box .icon { margin-right: 0.25rem; }
 </style>