fix(query): 支持12位纯数字时间编号(如202609040184)商品编号的精准索引路由

backend/internal/modules/pickup/repository.go

@@ -743,15 +743,12 @@ func applyAdminPickupFilters(db *gorm.DB, query AdminPickupQuery) *gorm.DB {
 		} else if strings.HasPrefix(upper, "PK") || strings.HasPrefix(upper, "P") {
 			// 提号编号：命中 admin_pickups(pickup_no) 唯一索引
 			db = db.Where("p.pickup_no = ?", kw)
-		} else if strings.HasPrefix(upper, "L") {
-			// 商品编号：命中 rental_listings(listing_no) 唯一索引
+		} else if strings.HasPrefix(upper, "L") || (len(kw) >= 12 && isAllDigits(kw)) {
+			// 商品编号（如 L前缀或时间计算生成的 12位纯数字如 202609040184）：命中 rental_listings(listing_no) 唯一索引
 			db = db.Where("l.listing_no = ?", kw)
 		} else if id, err := strconv.ParseUint(kw, 10, 64); err == nil && id > 0 && kw[0] != '0' && id < 100000000 {
 			// 短纯数字 ID（非零开头）：命中 admin_pickups 主键及关联 ID
 			db = db.Where("(p.id = ? OR p.listing_id = ? OR p.account_id = ? OR p.owner_id = ?)", id, id, id, id)
-		} else if len(kw) >= 12 && isAllDigits(kw) {
-			// 12位以上纯数字可能为商品编号或提号编号
-			db = db.Where("(p.pickup_no = ? OR l.listing_no = ?)", kw, kw)
 		} else {
 			like := "%" + kw + "%"
 			db = db.Where(
@@ -782,7 +779,7 @@ func (r *Repository) adminPickupCountQuery(ctx context.Context, query AdminPicku
 		return r.db.WithContext(ctx).Table("admin_pickups AS p").
 			Joins("JOIN users AS owner ON owner.id = p.owner_id")
 	}
-	if strings.HasPrefix(upper, "L") {
+	if strings.HasPrefix(upper, "L") || (len(kw) >= 12 && isAllDigits(kw)) {
 		return r.db.WithContext(ctx).Table("admin_pickups AS p").
 			Joins("JOIN rental_listings AS l ON l.id = p.listing_id")
 	}

backend/internal/modules/pickup/repository_test.go

@@ -736,9 +736,9 @@ func TestApplyAdminPickupFiltersSmartRouting(t *testing.T) {
 			wantSQLFrag: "p.id = ? OR p.listing_id = ? OR p.account_id = ? OR p.owner_id = ?",
 		},
 		{
-			name:        "长纯数字路由至提号编号或商品编号",
-			query:       AdminPickupQuery{Keyword: "2026090510001234"},
-			wantSQLFrag: "p.pickup_no = ? OR l.listing_no = ?",
+			name:        "12位时间计算的纯数字商品编号路由至rental_listings(listing_no)",
+			query:       AdminPickupQuery{Keyword: "202609040184"},
+			wantSQLFrag: "l.listing_no = ?",
 		},
 		{
 			name:        "普通文字退回多列LIKE模糊匹配",