fix: 包年改为 Waffo 一次性商品并切 CNY

包年 SKU 换为 PROD_1BIezCi932IbgCzRIV8hcJ，checkout type 统一 onetime。

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/internal/service/payment/waffo_test.go

@@ -6,12 +6,12 @@ import (
 	"testing"
 )
 
-func TestBuildCheckoutURL_YearlySubscription(t *testing.T) {
+func TestBuildCheckoutURL_YearlyOnetime(t *testing.T) {
 	cfg := WaffoConfig{
 		StoreSlug:          "opsxshell-pwsi6m4n",
-		ProductIDYearly:    "PROD_2WmkUVoYWt0NN8OVEyC6n3",
+		ProductIDYearly:    "PROD_1BIezCi932IbgCzRIV8hcJ",
 		ProductIDPerpetual: "PROD_0pcnzzT4nalEkkcdyIUoD5",
-		Currency:           "USD",
+		Currency:           "CNY",
 		Environment:        "test",
 		SuccessURL:         "opsxshell://pro/activated",
 	}
@@ -23,14 +23,14 @@ func TestBuildCheckoutURL_YearlySubscription(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	if !strings.Contains(u.Path, "PROD_2WmkUVoYWt0NN8OVEyC6n3") {
+	if !strings.Contains(u.Path, "PROD_1BIezCi932IbgCzRIV8hcJ") {
 		t.Fatalf("yearly product missing: %s", raw)
 	}
 	q := u.Query()
-	if q.Get("type") != "subscription" {
-		t.Fatalf("type=%s want subscription", q.Get("type"))
+	if q.Get("type") != "onetime" {
+		t.Fatalf("type=%s want onetime", q.Get("type"))
 	}
-	if q.Get("currency") != "USD" {
+	if q.Get("currency") != "CNY" {
 		t.Fatalf("currency=%s", q.Get("currency"))
 	}
 	if q.Get("test") != "true" {
@@ -41,9 +41,9 @@ func TestBuildCheckoutURL_YearlySubscription(t *testing.T) {
 func TestBuildCheckoutURL_PerpetualOnetime(t *testing.T) {
 	cfg := WaffoConfig{
 		StoreSlug:          "opsxshell-pwsi6m4n",
-		ProductIDYearly:    "PROD_2WmkUVoYWt0NN8OVEyC6n3",
+		ProductIDYearly:    "PROD_1BIezCi932IbgCzRIV8hcJ",
 		ProductIDPerpetual: "PROD_0pcnzzT4nalEkkcdyIUoD5",
-		Currency:           "USD",
+		Currency:           "CNY",
 		Environment:        "test",
 		SuccessURL:         "opsxshell://pro/activated",
 	}