feat: 合并急救员建群逻辑到createGroupMag，新增参与工单列表接口

1. createGroupMag增加addCareUsersToGroup调用，自动拉入关爱联络员+急救员
2. 废除createGroupMagFirstAider（标记@Deprecated）
3. 新增/myparticipatedOrders接口，app端查询当前登录人参与的应急工单列表

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

health-emergency/health-emergency-api/src/main/java/com/renkang/emergency/entity/vo/MyParticipatedOrderVO.java

@@ -0,0 +1,53 @@
+package com.renkang.emergency.entity.vo;
+
+import com.fasterxml.jackson.annotation.JsonFormat;
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Data;
+import org.springframework.format.annotation.DateTimeFormat;
+
+import java.util.Date;
+
+/**
+ * App端：当前登录人参与的应急工单VO
+ *
+ * @author PengJ
+ * @date 2026/7/20
+ */
+@Data
+public class MyParticipatedOrderVO {
+
+    @Schema(title = "应急单ID")
+    private String orderId;
+
+    @Schema(title = "会话ID")
+    private String sessionId;
+
+    @Schema(title = "被救助人姓名")
+    private String salvageUserName;
+
+    @Schema(title = "被救助人性别", description = "字典: sex2")
+    private String salvageUserSex;
+
+    @Schema(title = "被救助人头像")
+    private String salvageUserAvatar;
+
+    @Schema(title = "被救助人年龄")
+    private Integer salvageUserAge;
+
+    @Schema(title = "被救助人手机号")
+    private String salvageUserMobile;
+
+    @Schema(title = "单位名称")
+    private String orgName;
+
+    @Schema(title = "部门名称")
+    private String deptName;
+
+    @Schema(title = "应急单状态", description = "字典: emergency_order_status")
+    private String orderStatus;
+
+    @Schema(title = "发起时间")
+    @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss")
+    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", timezone = "GMT+8")
+    private Date initTime;
+}