feat: 电子药箱小程序 - 4Tab药品管理

- 电子药箱: 药品库存管理 + 手动录入 + 今日用药打卡
- 药品百科: 搜索 + 分类筛选 + 20种药品静态数据
- 惠教中心: 4条药品使用指南课程
- 我的: 家庭成员信息管理
- 自定义TabBar + navigation-bar组件
- SVG药品分类插图

miniprogram/package-live/volc-mini-sdk/components/live-description/live-description.wxml

@@ -0,0 +1,21 @@
+<view wx:if="{{description}}" class="live-description {{isLandscape ? 'live-description-landscape' : 'live-description-portrait'}} {{isDarkTheme ? 'live-description-dark' : ''}}" bindtap="openDescriptionPopup">
+  <view class="live-description-track">
+    <text class="live-description-text">{{description}}</text>
+  </view>
+</view>
+<view wx:if="{{descriptionPopupVisible && description}}" class="live-description-drawer-mask" bindtap="closeDescriptionPopup"></view>
+<view wx:if="{{descriptionPopupVisible && description}}" class="live-description-drawer-sheet" catchtap="catchNone">
+  <view class="live-description-drawer">
+    <view class="live-description-drawer-header">
+      <text class="live-description-drawer-title">直播描述</text>
+      <view class="live-description-drawer-close" bindtap="closeDescriptionPopup">
+        <view class="live-description-drawer-close-icon">
+          <mp-icon icon="close" size="{{16}}" color="#1d2129"></mp-icon>
+        </view>
+      </view>
+    </view>
+    <scroll-view scroll-y class="live-description-drawer-body">
+      <view class="live-description-drawer-content">{{description}}</view>
+    </scroll-view>
+  </view>
+</view>