fix(v2): 退款自愈扫描加回溯窗(防 LIMIT 尾部饥饿)+ 清死行

RefundApplyTask 的候选查询按 out_trade_no ASC/id ASC 取前 200,succeeded 退款历史只增不减、partially_refunded 长期驻留,超过 limit 后最新的崩溃窗口永远排在候选外扫不到。两路查询都加 since 回溯窗:RefundStore.ListDistinctOutTradeNosByStatusSince (completed_at>=since)、OrderStore.ListOrdersByStatusSince(updated_at>=since),旧的无窗方法原样保留。RefundApplyTask 新增 lookback/now 参数,config.ReconcileConfig 新增 RefundApplyLookbackMin(默认 48h)。顺带按 T6 复审补 OrderTTLMin 字段注释(须 ≫ crypto orderTTL 15min),清 sync_test.go 死行 `_ = time.Second`。 Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_013nMthbVEmQquxBRKb9Fj8u
2026-07-10 17:59:57 +08:00
parent 727ed74899
commit 9117de7dcf
9 changed files with 212 additions and 14 deletions
@@ -177,6 +177,37 @@ func TestListOrdersByStatus(t *testing.T) {
 	}
 }

+// TestListOrdersByStatusSinceExcludesStale 钉住回溯窗:updated_at 早于 since 的订单
+// 不应入候选(防 refunding/partially_refunded 长期驻留占满 LIMIT 名额——见 RefundApplyTask)。
+func TestListOrdersByStatusSinceExcludesStale(t *testing.T) {
+	db := model.OpenTestDB(t)
+	s := store.NewOrderStore(db)
+	now := time.Now()
+	stale := now.Add(-72 * time.Hour)
+	fresh := now.Add(-time.Hour)
+
+	if err := s.CreateOrder(&model.OrderV2{OutTradeNo: "O-STALE", AmountMinor: 100, Currency: "CNY", Status: model.OrderRefundingV2}); err != nil {
+		t.Fatal(err)
+	}
+	if err := db.Model(&model.OrderV2{}).Where("out_trade_no = ?", "O-STALE").Update("updated_at", stale).Error; err != nil {
+		t.Fatal(err)
+	}
+	if err := s.CreateOrder(&model.OrderV2{OutTradeNo: "O-FRESH", AmountMinor: 100, Currency: "CNY", Status: model.OrderRefundingV2}); err != nil {
+		t.Fatal(err)
+	}
+	if err := db.Model(&model.OrderV2{}).Where("out_trade_no = ?", "O-FRESH").Update("updated_at", fresh).Error; err != nil {
+		t.Fatal(err)
+	}
+
+	got, err := s.ListOrdersByStatusSince([]model.OrderStatusV2{model.OrderRefundingV2}, now.Add(-48*time.Hour), 50)
+	if err != nil {
+		t.Fatalf("list: %v", err)
+	}
+	if len(got) != 1 || got[0].OutTradeNo != "O-FRESH" {
+		t.Fatalf("只应命中窗内的 O-FRESH, got %+v", got)
+	}
+}
+
 // TestListAttemptsByChannelSince 供 orphan 扫描构造"已知期望金额集":同渠道、
 // created_at>=since、任意状态的 attempt(pending/paid/expired 都算——凡 pay
 // 合法签发过的金额都不算孤儿)。