修复

internal/application/cardobservation/traffic.go

@@ -12,6 +12,7 @@ import (
 	"github.com/break/junhong_cmp_fiber/internal/model"
 	"github.com/break/junhong_cmp_fiber/pkg/constants"
 	"github.com/break/junhong_cmp_fiber/pkg/errors"
+	"github.com/break/junhong_cmp_fiber/pkg/outboxid"
 )
 
 // TrafficIncrementedEvent 是卡流量正增量的可靠领域事实。
@@ -69,7 +70,7 @@ func (s *Service) ApplyTrafficObservation(ctx context.Context, observation domai
 			return errors.New(errors.CodeConflict, "卡流量基线已被其他请求更新")
 		}
 		if decision.IncrementMB > 0 {
-			eventID := "card-traffic:" + strconv.FormatUint(uint64(card.ID), 10) + ":" + observation.Metadata.ObservationID + ":incremented"
+			eventID := outboxid.Stable("card-traffic:", strconv.FormatUint(uint64(card.ID), 10)+":"+observation.Metadata.ObservationID+":incremented")
 			if err := s.eventWriter.AppendTraffic(ctx, tx, TrafficIncrementedEvent{
 				EventID: eventID, CardID: card.ID, IncrementMB: decision.IncrementMB,
 				ObservedAt: observation.Metadata.ObservedAt, Source: observation.Metadata.Source,