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/mall/index.tsx

@@ -1,6 +1,7 @@
 import React, { useState, useCallback } from 'react';
 import { View, Text } from '@tarojs/components';
 import Taro, { useReachBottom } from '@tarojs/taro';
+import { safeNavigateTo } from '@/utils/navigate';
 import { usePageData } from '@/hooks/usePageData';
 import { listProducts } from '../../services/points';
 import type { PointsProduct } from '../../services/points';
@@ -132,7 +133,7 @@ export default function Mall() {
       Taro.showToast({ title: '已兑完', icon: 'none' });
       return;
     }
-    Taro.navigateTo({ url: `/pages/pkg-mall/exchange/index?product_id=${item.id}` });
+    safeNavigateTo(`/pages/pkg-mall/exchange/index?product_id=${item.id}`);
   };
 
   const balance = account?.balance ?? 0;
@@ -145,7 +146,7 @@ export default function Mall() {
           text='请先完善个人档案'
           hint='建档后即可使用积分商城、签到等功能'
           actionText='去建档'
-          onAction={() => Taro.navigateTo({ url: '/pages/pkg-profile/family-add/index' })}
+          onAction={() => safeNavigateTo('/pages/pkg-profile/family-add/index')}
         />
       </PageShell>
     );