fix: onPageNotFound 兜底防空页崩溃 + 首页/记录页接入 i18n(语言切换覆盖全部3个tab)

miniprogram/pages/index/index.wxml

@@ -1,47 +1,47 @@
 <view class="page">
   <view class="loading-container" wx:if="{{loading}}">
     <view class="loading-spinner"></view>
-    <text class="loading-text">加载中...</text>
+    <text class="loading-text">{{i18n.common.loading}}</text>
   </view>
 
   <view class="page-content" wx:if="{{!loading && !hasDevice}}">
     <view class="empty-device">
       <text class="empty-icon">📱</text>
-      <view class="empty-text">还没有绑定设备</view>
-      <button class="btn-primary mt-30" bindtap="onAddDevice">扫码添加设备</button>
+      <view class="empty-text">{{i18n.home.noDevice}}</view>
+      <button class="btn-primary mt-30" bindtap="onAddDevice">{{i18n.home.addDevice}}</button>
     </view>
   </view>
 
   <view class="page-content" wx:if="{{!loading && hasDevice}}">
     <view class="device-card">
       <view class="device-card-icon">💆</view>
-      <view class="device-card-name">{{deviceName || '我的设备'}}</view>
+      <view class="device-card-name">{{deviceName || i18n.home.myDevice}}</view>
       <view class="device-card-status">
-        <text class="status-badge status-badge-green" wx:if="{{connected}}">已连接</text>
-        <text class="status-badge" style="background:#ccc;" wx:else>未连接</text>
+        <text class="status-badge status-badge-green" wx:if="{{connected}}">{{i18n.home.connected}}</text>
+        <text class="status-badge" style="background:#ccc;" wx:else>{{i18n.home.disconnected}}</text>
         <text class="device-card-battery" wx:if="{{connected}}">🔋 {{battery}}%</text>
       </view>
-      <button class="btn-reconnect" bindtap="onConnectBle" wx:if="{{!connected}}">重新连接</button>
+      <button class="btn-reconnect" bindtap="onConnectBle" wx:if="{{!connected}}">{{i18n.home.reconnect}}</button>
     </view>
 
     <view class="sub-info" bindtap="onViewSubscription" wx:if="{{!subscription || subscription.plan !== 'free'}}">
       <view class="sub-info-left">
         <text class="sub-info-icon">💳</text>
-        <text wx:if="{{subscription && subscription.status === 'active'}}">智能模式 · 剩余{{subRemaining}}天</text>
-        <text wx:else>未订阅智能模式</text>
+        <text wx:if="{{subscription && subscription.status === 'active'}}">{{subRemainText}}</text>
+        <text wx:else>{{i18n.home.notSubscribed}}</text>
       </view>
       <text class="sub-info-arrow">›</text>
     </view>
     <view class="sub-info" wx:if="{{subscription && subscription.plan === 'free'}}">
       <view class="sub-info-left">
         <text class="sub-info-icon">✨</text>
-        <text>智能模式已开放</text>
+        <text>{{i18n.home.smartOpen}}</text>
       </view>
     </view>
 
     <view class="action-buttons">
-      <button class="btn-primary" bindtap="onStartTreatment">开始使用</button>
-      <button class="btn-secondary" bindtap="onManageDevice">设备管理</button>
+      <button class="btn-primary" bindtap="onStartTreatment">{{i18n.home.start}}</button>
+      <button class="btn-secondary" bindtap="onManageDevice">{{i18n.home.deviceManage}}</button>
     </view>
   </view>
 </view>