feat: add payment gateway and billing plans

frontend/src/utils/adminNavigationPrefetch.ts

@@ -1,5 +1,6 @@
 import { adminWalletApi } from '@/api/admin-wallets'
 import { adminApi } from '@/api/admin'
+import { adminBillingPlansApi, epayGatewayApi } from '@/api/billing'
 import { getProvidersSummary } from '@/api/endpoints/providers'
 import { getPoolOverview, getPoolSchedulingPresets, listPoolKeys } from '@/api/endpoints/pool'
 import { listGlobalModels } from '@/api/global-models'
@@ -71,6 +72,18 @@ const adminRouteWarmers: Record<string, () => Promise<void>> = {
       { cacheTtlMs: NAV_DATA_CACHE_TTL_MS },
     )
   },
+  '/admin/payment-gateways': async () => {
+    await Promise.allSettled([
+      import('@/views/admin/PaymentGatewaySettings.vue'),
+      epayGatewayApi.get(),
+    ])
+  },
+  '/admin/billing-plans': async () => {
+    await Promise.allSettled([
+      import('@/views/admin/BillingPlansManagement.vue'),
+      adminBillingPlansApi.list(),
+    ])
+  },
 }
 
 export function prefetchAdminNavigationTarget(href: string): void {

frontend/src/utils/walletDisplay.ts

@@ -71,6 +71,8 @@ export function paymentMethodLabel(method: string | null | undefined): string {
   const labels: Record<string, string> = {
     alipay: '支付宝',
     wechat: '微信支付',
+    wxpay: '微信支付',
+    epay: '易支付',
     admin_manual: '人工充值',
     card_code: '充值卡',
     gift_code: '礼品卡',