fix(chat): 订单详情进群统一走 connectToGroupChat，groupId=订单号，修复历史消息与身份

Co-authored-by: Cursor <cursoragent@cursor.com>

pages/fighter-order-detail/fighter-order-detail.js

@@ -1,6 +1,7 @@
 // pages/fighter-order-detail/fighter-order-detail.js - 【最终版：提交前公告弹窗 + 修改图片至少保留一张】
 const app = getApp()
 import request from '../../utils/request.js'
+import connectionManager from '../../utils/xiaoxilj.js'
 const COS = require('../../utils/cos-wx-sdk-v5.min.js')
 
 Page({
@@ -284,7 +285,7 @@ Page({
     });
   },
 
-  // ===== 联系老板（订单群 groupId 即订单号，与商家端 sjddxq 一致） =====
+  // ===== 联系老板（订单群 groupId = 订单号） =====
   goToChatWithBoss() {
     const uid = wx.getStorageSync('uid')
     if (!uid) {
@@ -298,37 +299,15 @@ Page({
       return
     }
 
-    const targetUserId = 'Ds' + uid
-    const connected = wx.goEasy && wx.goEasy.getConnectionStatus && wx.goEasy.getConnectionStatus() === 'connected'
-    const currentUserId = wx.goEasy?.im?.userId
-    if (!connected || currentUserId !== targetUserId) {
-      if (app.ensureConnection) app.ensureConnection()
-      wx.showToast({ title: '连接中，请稍后再试', icon: 'none' })
-      return
-    }
-
-    const orderIdStr = String(orderId)
-    const groupName = (this.data.jibenShuju.nicheng || '订单') + '的订单群'
-    const isCross = this.data.jibenShuju.fadanpingtai || 0
-
-    wx.goEasy.im.subscribeGroup({
-      groupIds: [orderIdStr],
-      onSuccess: () => {
-        const param = {
-          groupId: orderIdStr,
-          orderId: orderIdStr,
-          groupName,
-          groupAvatar: '',
-          isCross,
-        }
-        wx.navigateTo({
-          url: '/pages/group-chat/group-chat?data=' + encodeURIComponent(JSON.stringify(param)),
-        })
-      },
-      onFailed: (err) => {
-        console.error('订阅群组失败', err)
-        wx.showToast({ title: '连接群聊失败', icon: 'none' })
-      },
+    connectionManager.connectToGroupChat({
+      identityType: 'dashou',
+      userId: 'Ds' + uid,
+      orderId: orderId,
+      groupName: (this.data.jibenShuju.nicheng || '订单') + '的订单群',
+      isCross: this.data.jibenShuju.fadanpingtai || 0,
+    }).catch((err) => {
+      console.error('跳转群聊失败', err)
+      wx.showToast({ title: '跳转聊天失败', icon: 'none' })
     })
   },