fix(mp): P1+P2 稳定性加固 — 导航安全+生产日志+分包预加载+logout清理

P1:
- 全局 23 个页面 Taro.navigateTo → safeNavigateTo，防止页栈超10层
- 生产构建保留 console.warn/error，便于线上问题排查
- 添加 preloadRule 分包预加载（首页预加载健康/医生/文章分包）

P2:
- logout 时清理 ai_chat_history + BLE DataBuffer 缓存
- restore() 移除冗余的双重 Storage 读取（secureGet 已包含 getStorageSync）
- 首页文章图片添加 lazyLoad

apps/miniprogram/src/pages/profile/index.tsx

@@ -1,5 +1,6 @@
 import { View, Text } from '@tarojs/components';
 import Taro from '@tarojs/taro';
+import { safeNavigateTo } from '@/utils/navigate';
 import { useState, useCallback } from 'react';
 import { useAuthStore } from '../../stores/auth';
 import { usePointsStore } from '../../stores/points';
@@ -113,7 +114,7 @@ export default function Profile() {
     if (item.isSwitchTab) {
       Taro.switchTab({ url: item.path });
     } else {
-      Taro.navigateTo({ url: item.path });
+      safeNavigateTo(item.path);
     }
   };
 
@@ -188,7 +189,7 @@ export default function Profile() {
           <ContentCard
             padding="none"
             margin="none"
-            onPress={() => Taro.navigateTo({ url: '/pages/pkg-profile/notifications/index' })}
+            onPress={() => safeNavigateTo('/pages/pkg-profile/notifications/index')}
           >
             <View className='menu-item'>
               <View className='menu-icon menu-icon--pri-l'>