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/consultation/index.tsx

@@ -1,6 +1,7 @@
 import { 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 { useAuthStore } from '@/stores/auth';
 import { listConsultations, ConsultationSession } from '@/services/consultation';
@@ -99,7 +100,7 @@ export default function Consultation() {
   });
 
   const handleTapSession = (session: ConsultationSession) => {
-    Taro.navigateTo({ url: `/pages/pkg-consultation/detail/index?id=${session.id}` });
+    safeNavigateTo(`/pages/pkg-consultation/detail/index?id=${session.id}`);
   };
 
   if (!user) {
@@ -130,7 +131,7 @@ export default function Consultation() {
       {/* 发起咨询按钮 */}
       <View
         className='consultation-create-btn'
-        onClick={() => Taro.navigateTo({ url: '/pages/consultation/create/index' })}
+        onClick={() => safeNavigateTo('/pages/consultation/create/index')}
       >
         <Text className='consultation-create-btn-text'>发起咨询</Text>
       </View>