fix: count distinct SKU codes across shared pallet inbounds

firstleg/src/main/java/com/baiyue/firstleg/service/DropshipPalletizationService.java

@@ -231,7 +231,8 @@ public class DropshipPalletizationService {
    values.stream().map(v->v.carton().getBoxCode()).toList());}).toList();
   int discrepancies=(int)cartons.stream().filter(c->"ACCEPTED_VARIANCE".equals(c.getDiscrepancyStatus())).count();
   PalletMetrics metrics=mapper.metrics(row.getId());
-  return new Pallet(row.getId(),row.getPalletNo(),row.getPalletStatus(),cartons.size(),items.size(),discrepancies,
+  int skuCount=(int)items.stream().map(SkuItem::skuCode).distinct().count();
+  return new Pallet(row.getId(),row.getPalletNo(),row.getPalletStatus(),cartons.size(),skuCount,discrepancies,
    metrics==null?BigDecimal.ZERO:metrics.weightKg(),metrics==null?BigDecimal.ZERO:metrics.volumeCbm(),row.getVersion(),items,
    cartons.stream().map(c->cartonView(c,c.getInboundCode(),false,null)).toList(),row.getCompletedAt());
  }

firstleg/src/main/resources/openapi/dropship-palletization-v1.yaml

@@ -163,7 +163,7 @@ components:
         palletNo: {$ref: '#/components/schemas/PalletNo'}
         status: {type: string, enum: [OPEN, SEALED]}
         cartonCount: {type: integer, minimum: 0}
-        skuCount: {type: integer, minimum: 0}
+        skuCount: {type: integer, minimum: 0, description: '整托按 SKU 编码去重的种类数，包含合托全部入仓码，不是商品件数或入仓明细数'}
         discrepancyCartons: {type: integer, minimum: 0}
         weightKg: {type: number, minimum: 0}
         volumeCbm: {type: number, minimum: 0}

firstleg/src/test/java/com/baiyue/firstleg/service/DropshipPalletizationServiceTest.java

@@ -26,6 +26,26 @@ class DropshipPalletizationServiceTest {
  private final DropshipPalletizationService service=new DropshipPalletizationService();
  DropshipPalletizationServiceTest(){ ReflectionTestUtils.setField(service,"mapper",mapper); ReflectionTestUtils.setField(service,"documentNumbers",numbers); when(mapper.labelSkus(anyLong(),anyLong())).thenAnswer(call -> java.util.List.of(labelSku())); when(mapper.cartonSkus(anyLong())).thenAnswer(call -> java.util.List.of(cartonSku())); }
 
+ @Test void sharedPalletCountsDistinctSkuCodesWithoutMergingInboundDetails(){
+  when(mapper.inboundCode(1L,30L)).thenReturn("IN-1");
+  when(mapper.palletsByInbound(1L,30L)).thenReturn(java.util.List.of(pallet()));
+  CartonRow first=carton(),second=carton(); second.setId(61L); second.setInboundId(31L); second.setBoxCode("BOX-2");
+  CartonSkuRow sameSku=cartonSku(); sameSku.setInboundDetailId(41L);
+  CartonSkuRow differentSku=cartonSku(); differentSku.setInboundDetailId(42L); differentSku.setSkuCode("SKU-2");
+  when(mapper.cartons(20L)).thenReturn(java.util.List.of(first,second));
+  when(mapper.cartonSkus(61L)).thenReturn(java.util.List.of(sameSku));
+  var shared=service.inboundPallets(1L,30L).get(0);
+  assertThat(shared.cartonCount()).isEqualTo(2);
+  assertThat(shared.skuCount()).isEqualTo(1);
+  assertThat(shared.items()).hasSize(2);
+  when(mapper.cartonSkus(61L)).thenReturn(java.util.List.of(sameSku,differentSku));
+  assertThat(service.inboundPallets(1L,30L).get(0).skuCount()).isEqualTo(2);
+  when(mapper.cartons(20L)).thenReturn(java.util.List.of(first));
+  assertThat(service.inboundPallets(1L,30L).get(0).skuCount()).isEqualTo(1);
+  when(mapper.cartons(20L)).thenReturn(java.util.List.of());
+  assertThat(service.inboundPallets(1L,30L).get(0).skuCount()).isZero();
+ }
+
  @Test void reviewCreatesExpectedNumberOfPrintablePalletCodes(){
   InboundOrderEntity inbound=dropshipInbound(); when(mapper.insertTask(anyLong(),eq(1L),eq(30L),eq(100L),eq(8))).thenReturn(1);
   when(numbers.next("DP")).thenReturn("DP-260911-0001","DP-260911-0002");