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

internal/reconcile/sync_test.go

@@ -35,7 +35,7 @@ func TestSyncPendingTaskSettlesViaQuery(t *testing.T) {
 	fp := fake.New()
 	preg.Register(fp)
 	areg := accounts.New([]config.AccountConfig{{AccountID: "fake-a1", Channel: "fake", Region: "global", Enabled: true}})
-	gw := gateway.New(orders, refunds, preg, accounts.NewRouter(areg, nil, nil), stubResolver{}, nopEnq{}, "global")
+	gw := gateway.New(orders, refunds, preg, accounts.NewRouter(areg, nil, nil), stubResolver{}, nopEnq{}, "global", store.NewSubscriptionStore(db), store.NewChargebackStore(db))
 
 	res, _ := gw.CreateOrder(context.Background(), gateway.CreateOrderInput{SKU: "pro_year", Method: "fake", BizSystem: "pangolin", BizRef: "u-1"})
 	atts, _ := orders.ListAttemptsByStatus(model.AttemptPending, 10)