refactor(DeviceSnapshotService): 优化数值类型处理逻辑

- 将通用Number类型转换为具体数值类型（Integer、Long、Float、Double）
- 添加具体的数值类型判断和转换逻辑
- 保持Boolean和String类型的原有处理方式
- 在WebSocketUtil中添加lombok.var导入

business/src/main/java/com/fizz/business/service/DeviceSnapshotService.java

@@ -764,8 +764,14 @@ public class DeviceSnapshotService {
 
                     // 处理不同类型的值
                     if (value != null) {
-                        if (value instanceof Number) {
-                            dataNode.put(field, (Number) value);
+                        if (value instanceof Integer) {
+                            dataNode.put(field, (Integer) value);
+                        } else if (value instanceof Long) {
+                            dataNode.put(field, (Long) value);
+                        } else if (value instanceof Float) {
+                            dataNode.put(field, (Float) value);
+                        } else if (value instanceof Double) {
+                            dataNode.put(field, (Double) value);
                         } else if (value instanceof Boolean) {
                             dataNode.put(field, (Boolean) value);
                         } else if (value instanceof String) {

business/src/main/java/com/fizz/business/utils/WebSocketUtil.java

@@ -20,6 +20,7 @@ import com.fizz.business.form.WebOperateMatForm;
 import com.fizz.business.service.client.TrackWsHandler;
 import com.google.common.collect.Maps;
 import lombok.extern.slf4j.Slf4j;
+import lombok.var;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
 import org.springframework.web.socket.TextMessage;