fix kafka attachment message id binding

server/kafka_audit_test.go

@@ -93,6 +93,12 @@ func TestEnqueueKafkaAuditEventPublishesCrossSystemEvent(t *testing.T) {
 func TestEnqueueKafkaFileAttachmentsBindRunsSynchronously(t *testing.T) {
 	ctrl := gomock.NewController(t)
 	defer ctrl.Finish()
+	var uidGenerator types.UidGenerator
+	if err := uidGenerator.Init(1, []byte("0123456789abcdef")); err != nil {
+		t.Fatalf("initialize UID generator: %v", err)
+	}
+	store.SetTestUidGenerator(uidGenerator)
+	defer store.SetTestUidGenerator(types.UidGenerator{})
 
 	oldKafkaBus := kafkaBus
 	oldFiles := store.Files
@@ -104,7 +110,8 @@ func TestEnqueueKafkaFileAttachmentsBindRunsSynchronously(t *testing.T) {
 	kafkaBus = &kafkaRuntime{}
 	files := mock_store.NewMockFilePersistenceInterface(ctrl)
 	store.Files = files
-	msgID := types.Uid(101)
+	databaseMsgID := types.Uid(101)
+	msgID := store.EncodeUid(int64(databaseMsgID))
 	msg := &types.Message{
 		ObjHeader: types.ObjHeader{Id: msgID.String(), CreatedAt: time.Date(2026, 9, 1, 10, 0, 0, 0, time.UTC)},
 		TenantID:  7,
@@ -114,7 +121,7 @@ func TestEnqueueKafkaFileAttachmentsBindRunsSynchronously(t *testing.T) {
 		Head:      types.KVMap{"x-im-type": "image"},
 	}
 	attachments := []string{"https://api.118im.com/v1/im/files/file_001"}
-	files.EXPECT().LinkAttachments(types.TenantID(7), "", msgID, attachments).Return(nil)
+	files.EXPECT().LinkAttachments(types.TenantID(7), "", databaseMsgID, attachments).Return(nil)
 
 	if err := enqueueKafkaFileAttachmentsBind(context.Background(), 7, msg, attachments); err != nil {
 		t.Fatalf("enqueueKafkaFileAttachmentsBind returned error: %v", err)