feat: 详细报告接入 v3 测量历史接口，设备列表接入设备接口

- 详细报告按 scaleType 区分 4/8 电极渲染，节段卡片 8 电极专属
- 设备列表改为接口驱动并新增空态
- 登录后统一跳首页，请求层兼容 code 0 返回风格

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

miniprogram/pages/helpCenter/helpCenter.wxml

@@ -15,7 +15,7 @@
     <view class="list">
         <scroll-view class="scrollView" scroll-y>
             <block wx:for="{{ questions }}" wx:key="id">
-                <view class="question" bind:tap="onTapQuestion" data-id="{{ item.id }}" data-title="{{ item.title }}">
+                <view class="question" bind:tap="onTapQuestion" data-id="{{ item.id }}">
                     <view class="dot"></view>
                     <view class="question-title">{{ item.title }}</view>
                     <view class="arrow"></view>