fix: stabilize overseas initialization and PDA acceptance

lastleg-service/src/test/java/com/baiyue/lastleg/delivery/DeliverySchemaContractTest.java

@@ -64,7 +64,7 @@ class DeliverySchemaContractTest {
 
         String overseas = Files.readString(Path.of("..", "deploy", "sql", "海外区域统一增量-MySQL8.sql"),
             StandardCharsets.UTF_8).toLowerCase();
-        assertTrue(overseas.contains("空库先执行 lastleg-service/src/main/resources/db/lastleg.sql 基线"));
+        assertTrue(overseas.contains("begin inline empty-database baseline: lastleg"));
         assertTrue(overseas.contains(createToken));
         assertTrue(overseas.indexOf(createToken) < overseas.indexOf("assert_phase5_lastleg_identifiers_migratable"));
         assertTrue(overseas.contains("alter table ll_delivery_order add column overseas_warehouse_name"));

lastleg-service/src/test/java/com/baiyue/lastleg/pda/warehouse/PdaWarehouseContractTest.java

@@ -60,6 +60,14 @@ class PdaWarehouseContractTest {
             .contains("unique key uk_ll_pda_history_idempotency(operator_key,idempotency_key)");
     }
 
+    @Test
+    void sharedContainerHistoryDoesNotReadRemovedCustomerScope() throws Exception {
+        String mapper = Files.readString(Path.of(
+            "src/main/java/com/baiyue/lastleg/pda/warehouse/mapper/PdaWarehouseMapper.java"));
+        assertThat(mapper).contains("NULL customer_id")
+            .doesNotContain("s.customer_id");
+    }
+
     @Test
     void openApiAndGatewayPublishOnlyStablePdaPaths() throws Exception {
         String openapi = Files.readString(Path.of("src/main/resources/openapi/overseas-pda-operations-v1.yaml"));