merge: P8 订阅/recurring + 拒付 chargeback 并入(订阅生命周期/续费/取消/past_due/chargeback/事件集收口)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013nMthbVEmQquxBRKb9Fj8u

# Conflicts:
#	internal/model/testdb.go
#	internal/provider/provider.go
#	internal/router/router.go
#	internal/store/order_query_test.go
#	main.go

main.go

@@ -55,6 +55,8 @@ func main() {
 	// v2 统一网关装配(P2 骨架,P3 配置驱动注册接线):provider 注册表 + gateway + webhook notifier。
 	orderStore := store.NewOrderStore(db)
 	refundStore := store.NewRefundStore(db)
+	subStore := store.NewSubscriptionStore(db)
+	chargebackStore := store.NewChargebackStore(db)
 	webhookStore := store.NewWebhookStore(db)
 	notifier := webhook.NewNotifier(webhookStore, config.C.BizByName, func(no string) (bool, error) {
 		o, err := orderStore.GetOrder(no) // 投递门禁:订单已结算(paid 及退款态)才放行
@@ -71,7 +73,7 @@ func main() {
 	// limit_aware 用量数据源:P6 对账 Runner 周期 Refresh 的真实用量源(替 NopUsage)。
 	usage := reconcile.NewUsageSource(orderStore, time.Now)
 	acctPicker := accounts.NewRouter(acctReg, config.C.Routing, usage)
-	gw := gateway.New(orderStore, refundStore, pReg, acctPicker, productResolver, notifier, "cn")
+	gw := gateway.New(orderStore, refundStore, pReg, acctPicker, productResolver, notifier, "cn", subStore, chargebackStore)
 	router.SetupV2(r, gw)
 
 	// P6 后台守护 / 对账:订单过期清理 + 用量刷新 + 查单对账收敛 + 已付抽查 +
@@ -166,6 +168,8 @@ func autoMigrate(db *gorm.DB) {
 		&model.NotifyLog{},
 		&model.BizNotifyLog{},
 		&model.OrderV2{}, &model.Attempt{}, &model.Account{}, &model.Refund{}, &model.WebhookDelivery{}, &model.OrphanPayment{}, // v2
+		&model.Subscription{}, // v2 recurring
+		&model.Chargeback{},   // v2 recurring — P8 Task6 拒付记录
 	); err != nil {
 		log.Fatalf("自动迁移失败: %v", err)
 	}