完善日志和审计链路

backend/internal/modules/listing/dto.go

@@ -4,6 +4,8 @@ import (
 	"encoding/json"
 	"strings"
 	"time"
+
+	"hfb_sys/backend/internal/auditlog"
 )
 
 type ListingDTO struct {
@@ -116,10 +118,7 @@ type AdminActionRequest struct {
 	Reason string `json:"reason" binding:"required"`
 }
 
-type AuditMeta struct {
-	IP        string
-	UserAgent string
-}
+type AuditMeta = auditlog.Meta
 
 type ExternalUploadRequest struct {
 	UploadTime   int64           `json:"uploadTime"`