feat(docs): add interactive cloud services demo components

Add 10 new Vue components for cloud services documentation with interactive demos including:
- Cloud services overview and provider comparison
- Pricing calculator and region latency visualization
- Compute instance configurator and storage type explorer
- API call workflow and deployment process steps
- IAM structure and policy editor demos

docs/.vitepress/theme/components/appendix/cloud-services/ProviderComparison.vue

@@ -0,0 +1,193 @@
+<template>
+  <div class="provider-comparison">
+    <div class="compare-table">
+      <div class="table-header">
+        <div class="col feature">对比项</div>
+        <div class="col provider">AWS</div>
+        <div class="col provider">阿里云</div>
+        <div class="col provider">腾讯云</div>
+      </div>
+      <div 
+        v-for="row in compareData" 
+        :key="row.feature"
+        class="table-row"
+      >
+        <div class="col feature">{{ row.feature }}</div>
+        <div class="col provider" :class="{ highlight: row.awsHighlight }">
+          {{ row.aws }}
+        </div>
+        <div class="col provider" :class="{ highlight: row.aliyunHighlight }">
+          {{ row.aliyun }}
+        </div>
+        <div class="col provider" :class="{ highlight: row.tencentHighlight }">
+          {{ row.tencent }}
+        </div>
+      </div>
+    </div>
+    
+    <div class="selection-guide">
+      <div class="guide-title">💡 选择建议</div>
+      <div class="guide-items">
+        <div class="guide-item">
+          <span class="scenario">出海业务</span>
+          <span class="recommend">→ AWS</span>
+        </div>
+        <div class="guide-item">
+          <span class="scenario">国内电商</span>
+          <span class="recommend">→ 阿里云</span>
+        </div>
+        <div class="guide-item">
+          <span class="scenario">游戏/社交</span>
+          <span class="recommend">→ 腾讯云</span>
+        </div>
+      </div>
+    </div>
+  </div>
+</template>
+
+<script setup>
+const compareData = [
+  {
+    feature: '全球覆盖',
+    aws: '⭐⭐⭐⭐⭐',
+    aliyun: '⭐⭐⭐',
+    tencent: '⭐⭐⭐',
+    awsHighlight: true
+  },
+  {
+    feature: '国内速度',
+    aws: '⭐⭐⭐',
+    aliyun: '⭐⭐⭐⭐⭐',
+    tencent: '⭐⭐⭐⭐⭐',
+    aliyunHighlight: true,
+    tencentHighlight: true
+  },
+  {
+    feature: '文档中文',
+    aws: '⭐⭐⭐',
+    aliyun: '⭐⭐⭐⭐⭐',
+    tencent: '⭐⭐⭐⭐⭐',
+    aliyunHighlight: true,
+    tencentHighlight: true
+  },
+  {
+    feature: '价格优势',
+    aws: '⭐⭐⭐',
+    aliyun: '⭐⭐⭐⭐',
+    tencent: '⭐⭐⭐⭐⭐',
+    tencentHighlight: true
+  },
+  {
+    feature: '生态丰富',
+    aws: '⭐⭐⭐⭐⭐',
+    aliyun: '⭐⭐⭐⭐',
+    tencent: '⭐⭐⭐⭐',
+    awsHighlight: true
+  }
+]
+</script>
+
+<style scoped>
+.provider-comparison {
+  border: 1px solid var(--vp-c-divider);
+  border-radius: 8px;
+  background-color: var(--vp-c-bg-soft);
+  padding: 1rem;
+  margin: 1rem 0;
+}
+
+.compare-table {
+  display: flex;
+  flex-direction: column;
+  gap: 0.5rem;
+}
+
+.table-header,
+.table-row {
+  display: grid;
+  grid-template-columns: 100px 1fr 1fr 1fr;
+  gap: 0.5rem;
+  align-items: center;
+}
+
+.table-header {
+  font-weight: 600;
+  font-size: 0.85rem;
+  padding-bottom: 0.5rem;
+  border-bottom: 1px solid var(--vp-c-divider);
+}
+
+.table-row {
+  font-size: 0.85rem;
+  padding: 0.4rem 0;
+}
+
+.col {
+  padding: 0.4rem 0.6rem;
+  border-radius: 4px;
+}
+
+.col.feature {
+  font-weight: 500;
+  color: var(--vp-c-text-1);
+}
+
+.col.provider {
+  text-align: center;
+  background: var(--vp-c-bg);
+}
+
+.col.provider.highlight {
+  background: var(--vp-c-brand-soft);
+  font-weight: 500;
+}
+
+.selection-guide {
+  margin-top: 1rem;
+  padding-top: 1rem;
+  border-top: 1px solid var(--vp-c-divider);
+}
+
+.guide-title {
+  font-weight: 600;
+  margin-bottom: 0.75rem;
+  font-size: 0.9rem;
+}
+
+.guide-items {
+  display: flex;
+  flex-direction: column;
+  gap: 0.5rem;
+}
+
+.guide-item {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  background: var(--vp-c-bg);
+  padding: 0.5rem 0.75rem;
+  border-radius: 4px;
+  font-size: 0.85rem;
+}
+
+.guide-item .scenario {
+  color: var(--vp-c-text-2);
+}
+
+.guide-item .recommend {
+  font-weight: 500;
+  color: var(--vp-c-brand);
+}
+
+@media (max-width: 640px) {
+  .table-header,
+  .table-row {
+    grid-template-columns: 80px 1fr 1fr 1fr;
+    font-size: 0.75rem;
+  }
+  
+  .col {
+    padding: 0.3rem 0.4rem;
+  }
+}
+</style>