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>

utils/xiaoxilj.js

@@ -155,29 +155,29 @@ class ConnectionManager {
       }
     }
 
-    // 3. 从会话列表查找真实群组ID
-    let realGroupId = null;
+    // 3. 从会话列表查找群组；找不到则用订单号作为 groupId（首聊场景）
+    const orderIdStr = String(orderId);
+    let realGroupId = orderIdStr;
     try {
       const result = await new Promise((resolve, reject) => {
         wx.goEasy.im.latestConversations({
           onSuccess: (res) => {
             const conversations = res.content?.conversations || [];
-            const found = conversations.find(c => c.type === 'group' && c.data && c.data.orderId === orderId);
-            resolve(found ? found.groupId : null);
+            const found = conversations.find((c) => {
+              if (c.type !== 'group') return false;
+              if (c.groupId === orderIdStr) return true;
+              const data = c.data || {};
+              return String(data.orderId || '') === orderIdStr;
+            });
+            resolve(found ? found.groupId : orderIdStr);
           },
-          onFailed: reject
+          onFailed: reject,
         });
       });
-      realGroupId = result;
+      realGroupId = result || orderIdStr;
     } catch (err) {
-      console.error('获取会话列表失败:', err);
-      wx.showToast({ title: '获取群聊信息失败', icon: 'none' });
-      throw err;
-    }
-
-    if (!realGroupId) {
-      wx.showToast({ title: '暂未创建群聊', icon: 'none' });
-      return;
+      console.warn('获取会话列表失败，使用订单号作为群ID', err);
+      realGroupId = orderIdStr;
     }
 
     // 4. 🔥 关键：主动订阅群组并等待成功，确保发送消息时订阅已完成
@@ -202,10 +202,13 @@ class ConnectionManager {
     // 5. 跳转群聊页（参数与消息列表完全一致）
     const param = {
       groupId: realGroupId,
-      orderId: orderId,
+      orderId: orderIdStr,
       groupName: groupName || '订单群聊',
       groupAvatar: groupAvatar || '',
-      isCross: isCross || 0
+      isCross: isCross || 0,
+      currentUserId: userId,
+      currentUserName: app.globalData.currentUser?.name || `用户${uid}`,
+      currentUserAvatar: avatar,
     };
     const path = '/pages/group-chat/group-chat?data=' + encodeURIComponent(JSON.stringify(param));
     wx.navigateTo({ url: path });