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/database/seed.go

@@ -282,7 +282,7 @@ func ensureWaffoPaymentGateway(db *gorm.DB) error {
 			Gateway:     "waffo",
 			Enabled:     true,
 			SandboxMode: true,
-			Currency:    "USD",
+			Currency:    "CNY",
 			Priority:    0,
 		}
 		if err := db.Create(&gw).Error; err != nil {
@@ -291,7 +291,7 @@ func ensureWaffoPaymentGateway(db *gorm.DB) error {
 	} else {
 		existing.Enabled = true
 		existing.SandboxMode = true
-		existing.Currency = "USD"
+		existing.Currency = "CNY"
 		existing.Priority = 0
 		if err := db.Save(&existing).Error; err != nil {
 			return err
@@ -303,6 +303,6 @@ func ensureWaffoPaymentGateway(db *gorm.DB) error {
 		Update("priority", 100).Error; err != nil {
 		return err
 	}
-	log.Println("[初始化] 支付网关已优先 Waffo（包年 subscription / 永久 onetime）")
+	log.Println("[初始化] 支付网关已优先 Waffo（包年/永久均为 onetime）")
 	return nil
 }

backend/internal/service/payment/waffo.go

@@ -31,7 +31,7 @@ func LoadWaffoConfig() WaffoConfig {
 	}
 	currency := strings.TrimSpace(os.Getenv("WAFFO_CURRENCY"))
 	if currency == "" {
-		currency = "USD"
+		currency = "CNY"
 	}
 	defaultProduct := strings.TrimSpace(os.Getenv("WAFFO_PRODUCT_ID"))
 	yearly := strings.TrimSpace(os.Getenv("WAFFO_PRODUCT_ID_YEARLY"))
@@ -104,12 +104,9 @@ func productIDForPlan(cfg WaffoConfig, planType string) string {
 }
 
 func checkoutTypeForPlan(planType string) string {
-	switch strings.TrimSpace(planType) {
-	case "yearly", "monthly":
-		return "subscription"
-	default:
-		return "onetime"
-	}
+	// OpsXShell 包年 / 永久均为 Waffo onetime 商品（包年不再走 subscription）。 // Logan.Li
+	_ = planType
+	return "onetime"
 }
 
 func resolveBaseCheckoutURL(cfg WaffoConfig, planType string) (*url.URL, error) {

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",
 	}