refactor(order):优化订单查询时间过滤逻辑

- 移除对 cn.hutool.core.date.DateTime 的依赖
- 使用 java.time 包替换原有日期处理方式
- 简化日期解析与时间范围计算逻辑
- 统一时间戳转换为 UTC 毫秒数- 提升代码

 package com.infoloop.tianting.service.client;
 
-import cn.hutool.core.date.DateTime;
 import com.infoloop.tianting.SingleResponse;
 import com.infoloop.tianting.SingleSkuResponse;
 import com.infoloop.tianting.SingleSpecialResponse;
@@ -92,6 +91,7 @@ import java.io.IOException;
 import java.time.Duration;
 import java.time.LocalDate;
 import java.time.LocalDateTime;
+import java.time.LocalTime;
 import java.time.ZoneOffset;
 import java.util.ArrayList;
 import java.util.HashMap;
@@ -497,18 +497,13 @@ public class OrderServiceRpcClient {
                 .setShouldFilterClientIds(true).addClientIds(queryOrderDto.getClientId())
                 .setShouldFilterStallIds(true).addAllStallIds(queryOrderDto.getStallIds());
         if (StringUtils.isNotEmpty(queryOrderDto.getMealTime())) {
-            DateTime mealDate = cn.hutool.core.date.DateUtil.parseDate(queryOrderDto.getMealTime());
-
-            DateTime startOfDayBeijing = cn.hutool.core.date.DateUtil.beginOfDay(mealDate);
-            DateTime endOfDayBeijing = cn.hutool.core.date.DateUtil.endOfDay(mealDate);
-
-            long startTimestamp = cn.hutool.core.date.DateUtil.offsetHour(startOfDayBeijing, 8).getTime();
-            long endTimestamp = cn.hutool.core.date.DateUtil.offsetHour(endOfDayBeijing, 8).getTime();
-
+            LocalDate today = LocalDate.parse(queryOrderDto.getMealTime(), DateUtil.YYYY_MM_DD);
+            LocalDateTime todayZero = today.atStartOfDay();
+            LocalDateTime todayEnd = today.atTime(LocalTime.MAX);
             request.setShouldFilterMealTimeStart(true)
-                    .setMealTimeStart(startTimestamp)
+                    .setMealTimeStart(todayZero.toInstant(ZoneOffset.UTC).toEpochMilli())
                     .setShouldFilterMealTimeEnd(true)
-                    .setMealTimeEnd(endTimestamp);
+                    .setMealTimeEnd(todayEnd.toInstant(ZoneOffset.UTC).toEpochMilli());
         }
         return orderServiceRpcBlockingStub.queryClientCustomerOrdersByCondition(request.build());
     }