add allowDecimalQuantity

src/main/java/com/imyeyu/api/modules/gao/entity/GaoSalesOrderItem.java

@@ -68,6 +68,14 @@ public class GaoSalesOrderItem extends UUIDEntity {
 	/// 基础单位数量系数快照
 	private BigDecimal baseQuantityPerUnitSnapshot;
 
+	/// 当前 SKU 是否允许业务数量保留小数
+	@Transient
+	private Boolean allowDecimalQuantity;
+
+	/// 当前 SKU 基础单位名称
+	@Transient
+	private String baseUnitName;
+
 	/// 购买数量
 	private BigDecimal quantity;
 

src/main/java/com/imyeyu/api/modules/gao/mapper/GaoProductSkuMapper.java

@@ -13,6 +13,12 @@ import java.util.List;
 /// @since 2026-09-06
 public interface GaoProductSkuMapper extends BaseMapper<GaoProductSku, String> {
 
+	/// 批量查询 SKU
+	///
+	/// @param idList SKU ID 集合
+	/// @return SKU 列表
+	List<GaoProductSku> selectByIdList(@Param("idList") Collection<String> idList);
+
 	/// 按产品查询 SKU
 	List<GaoProductSku> selectByProductId(@Param("productId") String productId);
 

src/main/java/com/imyeyu/api/modules/gao/service/GaoProductSkuService.java

@@ -15,6 +15,12 @@ import java.util.List;
 /// @since 2026-09-06
 public interface GaoProductSkuService extends BaseService<GaoProductSku, String> {
 
+	/// 批量查询 SKU
+	///
+	/// @param idList SKU ID 集合
+	/// @return SKU 列表，包含单位、规格和附件临时数据
+	List<GaoProductSku> listByIdList(Collection<String> idList);
+
 	/// 查询 SKU 详情
 	GaoProductSku detail(String id);
 

src/main/java/com/imyeyu/api/modules/gao/service/implement/GaoProductSkuServiceImplement.java

@@ -76,6 +76,16 @@ public class GaoProductSkuServiceImplement extends AbstractEntityService<GaoProd
 		return sku;
 	}
 
+	@Override
+	public List<GaoProductSku> listByIdList(Collection<String> idList) {
+		if (idList == null || idList.isEmpty()) {
+			return List.of();
+		}
+		List<GaoProductSku> result = mapper.selectByIdList(idList);
+		fillTransient(result);
+		return result;
+	}
+
 	@Override
 	public List<GaoProductSku> listByProductId(String productId) {
 		TimiException.required(productId, "not found productId");

src/main/java/com/imyeyu/api/modules/gao/service/implement/GaoSalesOrderServiceImplement.java

@@ -115,6 +115,7 @@ public class GaoSalesOrderServiceImplement extends AbstractEntityService<GaoSale
 		TimiException.required(order, "not found sales order");
 		storeScopeService.checkStoreId(order.getStoreId());
 		List<GaoSalesOrderItem> itemList = itemMapper.selectBySalesOrderId(order.getId());
+		fillItemDisplayInfo(itemList);
 		for (GaoSalesOrderItem item : itemList) {
 			fillItemBalance(item);
 		}
@@ -562,6 +563,37 @@ public class GaoSalesOrderServiceImplement extends AbstractEntityService<GaoSale
 		item.setRemainingBaseQuantity(baseQuantity.subtract(fulfilledBaseQuantity));
 	}
 
+	/// 填充订单项数量展示所需的 SKU 信息
+	///
+	/// @param itemList 订单项列表
+	private void fillItemDisplayInfo(List<GaoSalesOrderItem> itemList) {
+		if (itemList == null || itemList.isEmpty()) {
+			return;
+		}
+		List<String> skuIdList = itemList.stream()
+			.map(GaoSalesOrderItem::getSkuId)
+			.filter(value -> value != null && !value.isBlank())
+			.distinct()
+			.toList();
+		if (skuIdList.isEmpty()) {
+			return;
+		}
+		Map<String, GaoProductSku> skuMap = skuService.listByIdList(skuIdList).stream()
+			.collect(java.util.stream.Collectors.toMap(GaoProductSku::getId, java.util.function.Function.identity()));
+		for (GaoSalesOrderItem item : itemList) {
+			GaoProductSku sku = skuMap.get(item.getSkuId());
+			if (sku == null) {
+				continue;
+			}
+			item.setAllowDecimalQuantity(sku.getAllowDecimalQuantity());
+			item.setBaseUnitName(sku.getUnitList().stream()
+				.filter(unit -> Boolean.TRUE.equals(unit.getIsBase()))
+				.map(GaoProductSkuUnit::getName)
+				.findFirst()
+				.orElse(null));
+		}
+	}
+
 	private void fillItemAttachments(List<GaoSalesOrderItem> itemList) {
 		if (itemList == null || itemList.isEmpty()) {
 			return;