diff --git a/firstleg/src/main/java/com/baiyue/firstleg/service/LoadingListService.java b/firstleg/src/main/java/com/baiyue/firstleg/service/LoadingListService.java
index 769a69693..d1f32c420 100644
--- a/firstleg/src/main/java/com/baiyue/firstleg/service/LoadingListService.java
+++ b/firstleg/src/main/java/com/baiyue/firstleg/service/LoadingListService.java
@@ -577,7 +577,7 @@ public class LoadingListService {
     }
 
     /** 完成 worker 在远程结算前验证最终跨区快照能够完整生成。 */
-    @Transactional(readOnly = true)
+    @Transactional
     public void requireCompletedEventReady(long planId) {
         loadingCompletedOutboxService.requirePublishable(planId);
     }
diff --git a/firstleg/src/test/java/com/baiyue/firstleg/service/LoadingListServiceTest.java b/firstleg/src/test/java/com/baiyue/firstleg/service/LoadingListServiceTest.java
index 748dd8fc8..fe004951c 100644
--- a/firstleg/src/test/java/com/baiyue/firstleg/service/LoadingListServiceTest.java
+++ b/firstleg/src/test/java/com/baiyue/firstleg/service/LoadingListServiceTest.java
@@ -30,6 +30,7 @@ import org.springframework.boot.test.mock.mockito.MockBean;
 import org.springframework.context.annotation.Bean;
 import org.springframework.test.context.junit.jupiter.SpringJUnitConfig;
 import org.springframework.mock.web.MockMultipartFile;
+import org.springframework.transaction.annotation.Transactional;
 
 import java.util.List;
 
@@ -315,6 +316,16 @@ class LoadingListServiceTest {
         verify(loadingCompletedOutboxService).publish(10L);
     }
 
+    @Test
+    void completedEventReadinessMustAllowPalletLabelFreeze() throws Exception {
+        Transactional transaction = LoadingListService.class
+            .getDeclaredMethod("requireCompletedEventReady", long.class)
+            .getAnnotation(Transactional.class);
+
+        assertThat(transaction).isNotNull();
+        assertThat(transaction.readOnly()).isFalse();
+    }
+
     @Test
     void shouldRejectAutomaticCompletionWhenPdaItemsRemain() {
         when(pickRepository.allPlanItemsPicked(10L)).thenReturn(false);