feat(emergency): push/send 接入IM消息推送，SendIm 新增 businessId 字段

- SendIm 新增 businessId 字段（String），用于区分业务来源，不影响已有调用
- FirstAidPushServiceImpl.send() 步骤5从日志占位改为实际发送IM群消息
- businessId 固定为 "article"，前端可据此识别宣教推送消息
- 工单无 sessionId 时跳过IM发送并 log.warn 告警

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

health-emergency/health-emergency-api/src/main/java/com/renkang/emergency/bean/response/SendIm.java

@@ -20,4 +20,8 @@ public class SendIm {
      * 类型  1: 应急单
      */
     private Integer type;
+    /**
+     * 业务标识，用于区分不同业务来源（例："article"=宣教推送）
+     */
+    private String businessId;
 }

health-emergency/health-emergency-biz/src/main/java/com/renkang/emergency/service/impl/FirstAidPushServiceImpl.java

@@ -2,9 +2,11 @@ package com.renkang.emergency.service.impl;
 
 import cn.hutool.core.collection.CollectionUtil;
 import cn.hutool.core.util.StrUtil;
+import com.alibaba.fastjson.JSONObject;
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.baomidou.mybatisplus.core.metadata.IPage;
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
+import com.renkang.emergency.bean.response.SendIm;
 import com.renkang.emergency.constant.FirstAidConstants;
 import com.renkang.emergency.dto.PushBatchSendDTO;
 import com.renkang.emergency.dto.PushFilterDTO;
@@ -17,6 +19,8 @@ import com.renkang.emergency.mapper.FirstAidResourceMapper;
 import com.renkang.emergency.mapper.FirstAidResourceCategoryMapper;
 import com.renkang.emergency.mapper.OrderMapper;
 import com.renkang.emergency.service.IFirstAidPushService;
+import com.renkang.im.api.IMHelloApi;
+import com.renkang.im.entity.ImGroupMsgTextReqDO;
 import lombok.extern.slf4j.Slf4j;
 import org.jeecg.common.constant.CommonConstant;
 import org.jeecg.common.system.vo.LoginUser;
@@ -55,6 +59,9 @@ public class FirstAidPushServiceImpl implements IFirstAidPushService {
     @Autowired
     private FirstAidPushServiceImpl self;
 
+    @Autowired
+    private IMHelloApi imHelloApi;
+
     @Override
     public IPage<FirstAidResource> queryResourceList(String orderId, PushFilterDTO filter, Page<FirstAidResource> page) {
         LambdaQueryWrapper<FirstAidResource> wrapper = buildFilterWrapper(filter);
@@ -108,10 +115,11 @@ public class FirstAidPushServiceImpl implements IFirstAidPushService {
             throw new RuntimeException("该资源已推送，请勿重复操作");
         }
 
-        // 3. 获取推送目标
+        // 3. 获取工单信息
         String targetUserId = null;
+        Order order = null;
         if (StrUtil.isNotBlank(orderId)) {
-            Order order = orderMapper.selectById(orderId);
+            order = orderMapper.selectById(orderId);
             if (order != null) {
                 targetUserId = order.getSalvageUserId();
             }
@@ -131,11 +139,26 @@ public class FirstAidPushServiceImpl implements IFirstAidPushService {
         record.setPushTime(new Date());
         pushRecordMapper.insert(record);
 
-        // 5. 推送通知（预留，当前记录日志）
-        log.info("急救宣教推送: resourceId={}, title={}, orderId={}, targetUserId={}, pushById={}, pushByName={}",
-                resourceId, resource.getTitle(), orderId, targetUserId,
-                loginUser != null ? loginUser.getId() : null,
-                loginUser != null ? loginUser.getRealname() : null);
+        // 5. 构建推送IM消息并发送
+        if (order != null && StrUtil.isNotBlank(order.getSessionId())) {
+            SendIm sendIm = new SendIm();
+            sendIm.setType(1);
+            sendIm.setTitle(resource.getTitle());
+            sendIm.setContent(StrUtil.isNotBlank(resource.getSummary()) ? resource.getSummary() : resource.getTitle());
+            sendIm.setBusinessId("article");
+
+            ImGroupMsgTextReqDO im = new ImGroupMsgTextReqDO();
+            im.setGroupId(order.getSessionId());
+            im.setFromUserId("administrator");
+            im.setContent(JSONObject.toJSON(sendIm).toString());
+
+            imHelloApi.sendGroupMsg(im);
+            log.info("急救宣教推送IM消息已发送: resourceId={}, title={}, orderId={}, sessionId={}, businessId=article",
+                    resourceId, resource.getTitle(), orderId, order.getSessionId());
+        } else {
+            log.warn("急救宣教推送IM消息未发送（工单无群聊sessionId）: resourceId={}, orderId={}",
+                    resourceId, orderId);
+        }
     }
 
     @Override