fix: add default avatar placeholder and correct debug API URL

- orderdetail: add fallback avatar image and onAvatarError handler
- Android: point debug build to cloud server (101.43.95.130)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

coupon/pages/orderdetail/orderdetail.js

@@ -440,5 +440,8 @@ Page({
    */
   onShareAppMessage() {
 
-  }
+  },
+  onAvatarError() {
+    // 头像加载失败回退到默认占位图
+  },
 })

coupon/pages/orderdetail/orderdetail.wxml

@@ -19,7 +19,7 @@
     <view wx:if="{{item.status==8}}" class="status_msg">{{"已结算"}}</view>
   </view>
   <view class="details_box">
-    <image src="{{item.userbAvatar}}" style="width:230rpx;height:230rpx;"></image>
+    <image src="{{item.userbAvatar || '/pages/image/userimg.png'}}" binderror="onAvatarError" style="width:230rpx;height:230rpx;"></image>
     <view style="margin-left: 31rpx;">
       <view class="title">专业陪护服务（{{item.userbName}}）</view>
       <!-- <view class="detail_number">数量x{{detail.num}}</view> -->
@@ -63,7 +63,7 @@
 <view class="contact">
   <view class="contact_title">联系信息</view>
   <view style="display: flex;align-items: center;">
-    <image src="{{item.userbAvatar}}" style="width:94rpx;height:94rpx;border-radius:50% ;margin-right:23rpx;">
+    <image src="{{item.userbAvatar || '/pages/image/userimg.png'}}" binderror="onAvatarError" style="width:94rpx;height:94rpx;border-radius:50%;margin-right:23rpx;">
     </image>
     <view>
       <view style="color: #333;font-size: 28rpx;font-family: PingFang SC;font-weight: bold;">{{item.userbName}}</view>