feat(admin): allow to delete private message

server/services/core/chat/message.service.ts

@@ -345,11 +345,16 @@ class MessageService extends TcService {
       throw new DataNotFoundError(t('该消息未找到'));
     }
 
+    const converseId = String(message.converseId);
     const groupId = message.groupId;
     if (!groupId) {
+      // 私人会话
+      if (userId !== SYSTEM_USERID) {
+        // 如果是私人发起的, 则直接抛出异常
         throw new Error(t('无法删除私人信息'));
       }
-
+    } else {
+      // 群组会话, 进行权限校验
       const [hasPermission] = await call(ctx).checkUserPermissions(
         String(groupId),
         userId,
@@ -359,8 +364,8 @@ class MessageService extends TcService {
       if (!hasPermission) {
         throw new NoPermissionError(t('没有删除权限')); // 仅管理员允许删除
       }
+    }
 
-    const converseId = String(message.converseId);
     await this.adapter.removeById(messageId); // TODO: 考虑是否要改为软删除
 
     this.roomcastNotify(ctx, converseId, 'delete', { converseId, messageId });