fix(payment): consume first recharge offer after payment

src/stores/payment/payment-state.ts

@@ -2,7 +2,6 @@
  * Payment 状态机：State 形状 + 初始值
  */
 import type {
-  FirstRechargeOffer,
   PayChannel,
   PaymentOrderStatus,
   PaymentPlan,
@@ -11,7 +10,6 @@ import type {
 export interface PaymentState {
   plans: PaymentPlan[];
   isFirstRecharge: boolean;
-  firstRechargeOffer: FirstRechargeOffer | null;
   selectedPlanId: string;
   payChannel: PayChannel;
   autoRenew: boolean;
@@ -27,7 +25,6 @@ export interface PaymentState {
 export const initialState: PaymentState = {
   plans: [],
   isFirstRecharge: false,
-  firstRechargeOffer: null,
   selectedPlanId: "",
   payChannel: "stripe",
   autoRenew: true,