fix(lastleg): keep inventory warehouse snapshots canonical

lastleg-service/src/test/java/com/baiyue/lastleg/inventory/InventorySchemaContractTest.java

@@ -9,6 +9,8 @@ import com.baiyue.lastleg.inventory.query.mapper.InventoryQueryMapper;
 import com.baomidou.mybatisplus.annotation.IdType;
 import com.baomidou.mybatisplus.annotation.TableId;
 import org.apache.ibatis.annotations.Select;
+import org.apache.ibatis.annotations.Delete;
+import org.apache.ibatis.annotations.Update;
 import org.junit.jupiter.api.Test;
 
 import java.io.IOException;
@@ -82,6 +84,22 @@ class InventorySchemaContractTest {
         assertFalse(sql.contains("sku_code"));
     }
 
+    @Test
+    void balanceQueriesHideZeroRowsAndMutationsKeepWarehouseDimensionCanonical() throws Exception {
+        assertTrue(InventoryQueryMapper.BALANCE_FILTER.contains("procurement_packages)>0"));
+        assertTrue(InventoryQueryMapper.JOINED_BALANCE_FILTER.contains("b.procurement_packages)>0"));
+        String bindSql = String.join(" ", com.baiyue.lastleg.inventory.mapper.InventoryBalanceMapper.class
+            .getMethod("bindInboundPlan", String.class, String.class, Long.class, String.class,
+                String.class, java.time.LocalDateTime.class)
+            .getAnnotation(Update.class).value());
+        assertTrue(bindSql.contains("overseas_warehouse_id=#{overseasWarehouseId}"));
+        String deleteSql = String.join(" ", com.baiyue.lastleg.inventory.command.mapper.InventoryCommandMapper.class
+            .getMethod("deleteEmptyBalance", String.class, Long.class)
+            .getAnnotation(Delete.class).value());
+        assertTrue(deleteSql.contains("in_transit_packages=0"));
+        assertTrue(deleteSql.contains("NOT EXISTS"));
+    }
+
     @Test
     void incrementalMigrationIsAdditiveAndRerunnable() throws IOException {
         String migration = Files.readString(Path.of("..", "scripts", "db", "incremental.sql"), StandardCharsets.UTF_8)

lastleg-service/src/test/java/com/baiyue/lastleg/inventory/command/InventoryCommandServiceTest.java

@@ -140,6 +140,7 @@ class InventoryCommandServiceTest {
         source.setInTransitPackages(12L);
         when(balances.lockDimension("100", "WH-1", "ONT8", 101L, "IN-CODE-1")).thenReturn(target);
         when(commands.lockInboundTransitBalances("100", 101L, "IN-CODE-1")).thenReturn(List.of(source));
+        when(commands.deleteEmptyBalance("100", 201L)).thenReturn(1);
 
         InventoryCommandResponse result = service.stockIn("100", "7",
             stockIn("IN-1", "stock-in-cross-warehouse", 12, 24));
@@ -152,6 +153,40 @@ class InventoryCommandServiceTest {
         assertEquals(-12L, written.getAllValues().get(0).getDeltaPackages());
         assertEquals("STOCK_IN", written.getAllValues().get(1).getBusinessType());
         assertEquals("IN_TRANSIT", written.getAllValues().get(1).getStatusFrom());
+        verify(commands).deleteEmptyBalance("100", 201L);
+    }
+
+    @Test
+    void receivingWarehouseChangeRebindsOnlyInTransitBalanceAndWritesZeroDeltaAudit() {
+        InventoryBalance balance = balance(200L, 0);
+        balance.setInTransitPackages(12L);
+        when(commands.lockInboundBalances("100", 101L)).thenReturn(List.of(balance));
+        when(balances.lockDimension("100", "900", "ONT8", 101L, "IN-CODE-1")).thenReturn(null);
+
+        service.rebindReceivingWarehouse("100", 101L, 900L, "US-NYC-01", "纽约仓",
+            "admin", "change-1");
+
+        assertEquals("900", balance.getOverseasWarehouseId());
+        assertEquals("US-NYC-01", balance.getOverseasWarehouseCode());
+        assertEquals("纽约仓", balance.getOverseasWarehouseName());
+        ArgumentCaptor<InventoryLedger> audit = ArgumentCaptor.forClass(InventoryLedger.class);
+        verify(ledgers).insert(audit.capture());
+        assertEquals("RECEIVING_WAREHOUSE_CHANGED", audit.getValue().getBusinessType());
+        assertEquals(0L, audit.getValue().getDeltaPackages());
+        assertEquals(12L, audit.getValue().getBeforePackages());
+        assertEquals(12L, audit.getValue().getAfterPackages());
+    }
+
+    @Test
+    void receivingWarehouseChangeRejectsPhysicalInventoryBeforeAnySnapshotMutation() {
+        InventoryBalance balance = balance(200L, 1);
+        when(commands.lockInboundBalances("100", 101L)).thenReturn(List.of(balance));
+
+        assertThrows(ResponseStatusException.class, () -> service.rebindReceivingWarehouse(
+            "100", 101L, 900L, "US-NYC-01", "纽约仓", "admin", "change-physical"));
+
+        verify(balances, never()).updateById(any(InventoryBalance.class));
+        verify(ledgers, never()).insert(any(InventoryLedger.class));
     }
 
     @Test
@@ -311,6 +346,7 @@ class InventoryCommandServiceTest {
         InventoryBalance value = new InventoryBalance();
         value.setId(id); value.setCustomerId("100"); value.setCustomerName("Customer 100");
         value.setOverseasWarehouseId("WH-1");
+        value.setOverseasWarehouseCode("WH1"); value.setOverseasWarehouseName("Warehouse 1");
         value.setDestinationWarehouseCode("ONT8"); value.setInboundOrderId(101L);
         value.setInboundOrderNo("IN-1"); value.setInboundCode("IN-CODE-1");
         value.setAvailablePackages(available);