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-countdown/live-countdown.wxml

@@ -0,0 +1,60 @@
+<view wx:if="{{show}}" class="live-countdown-container {{isDarkTheme ? 'live-countdown-container-dark' : ''}}">
+  <block wx:if="{{isLandscape}}">
+    <view class="live-countdown-container-landscape {{showReservationEntry ? '' : 'live-countdown-container-landscape-only'}}">
+      <view class="live-countdown-panel {{showReservationEntry ? '' : 'live-countdown-panel-only'}}">
+        <text class="live-countdown-label">距离直播开始还有</text>
+        <view class="live-countdown-time-box">
+          <text wx:if="{{countdown.d > 0}}" class="live-countdown-num">{{countdown.d}}</text>
+          <text wx:if="{{countdown.d > 0}}" class="live-countdown-unit">天</text>
+          <text class="live-countdown-num">{{countdown.h}}</text>
+          <text class="live-countdown-unit">时</text>
+          <text class="live-countdown-num">{{countdown.m}}</text>
+          <text class="live-countdown-unit">分</text>
+          <text class="live-countdown-num">{{countdown.s}}</text>
+          <text class="live-countdown-unit">秒</text>
+        </view>
+      </view>
+      <view
+        wx:if="{{showReservationEntry}}"
+        class="live-countdown-btn-landscape {{isReserved ? 'live-countdown-btn-done' : ''}}"
+        bindtap="onReservationTap"
+      >
+        <text wx:if="{{isReserved}}">已预约</text>
+        <text wx:else>立即预约</text>
+      </view>
+    </view>
+  </block>
+
+  <view wx:else class="live-countdown-portrait-container {{showReservationEntry ? '' : 'live-countdown-portrait-container-only'}}">
+    <view class="live-countdown-portrait-left">
+      <text class="live-countdown-portrait-label">距离直播开始还有</text>
+      <view class="live-countdown-portrait-time">
+        <text wx:if="{{countdown.d > 0}}" class="live-countdown-portrait-num">{{countdown.d}}</text>
+        <text wx:if="{{countdown.d > 0}}" class="live-countdown-portrait-unit">天</text>
+        <text class="live-countdown-portrait-num">{{countdown.h}}</text>
+        <text class="live-countdown-portrait-unit">时</text>
+        <text class="live-countdown-portrait-num">{{countdown.m}}</text>
+        <text class="live-countdown-portrait-unit">分</text>
+        <text class="live-countdown-portrait-num">{{countdown.s}}</text>
+        <text class="live-countdown-portrait-unit">秒</text>
+      </view>
+    </view>
+
+    <view wx:if="{{showReservationEntry}}" class="live-countdown-portrait-right">
+      <view
+        class="live-countdown-portrait-btn {{isReserved ? 'live-countdown-portrait-btn-done' : ''}}"
+        bindtap="onReservationTap"
+      >
+        <text wx:if="{{isReserved}}">已预约</text>
+        <text wx:else>立即预约</text>
+      </view>
+    </view>
+  </view>
+
+  <reservation-modal
+    sdkInstance="{{sdkInstance}}"
+    visible="{{modalVisible}}"
+    bind:success="onReservationSuccess"
+    bind:close="onModalClose"
+  />
+</view>