feat(distribution): 完善分销站与主站业务数据及权益风控隔离，修复历史商品归属

backend/internal/modules/listing/query.go

@@ -170,12 +170,18 @@ func (r *Repository) FindAdmin(ctx context.Context, listingID uint64) (*ListingD
 	return r.findDTO(ctx, "l.id = ?", listingID)
 }
 
-func (r *Repository) ListMine(ctx context.Context, ownerID uint64) ([]ListingDTO, error) {
+func (r *Repository) ListMine(ctx context.Context, ownerID uint64, siteCode ...string) ([]ListingDTO, error) {
 	var rows []listingRow
-	err := r.baseQuery(ctx).
-		Where("l.owner_id = ?", ownerID).
-		Order("l.id DESC").
-		Scan(&rows).Error
+	base := r.baseQuery(ctx).Where("l.owner_id = ?", ownerID)
+	if len(siteCode) > 0 {
+		code := strings.TrimSpace(siteCode[0])
+		if code != "" {
+			base = base.Joins("INNER JOIN distribution_sites AS my_ds ON my_ds.id = l.distribution_site_id AND my_ds.site_code = ?", code)
+		} else {
+			base = base.Where("l.distribution_site_id IS NULL OR l.distribution_site_id = 0")
+		}
+	}
+	err := base.Order("l.id DESC").Scan(&rows).Error
 	if err != nil {
 		return nil, err
 	}