feat: 完整支付配套——CoinLedger流水模型+充值/消费/退款全链写流水+管理后台订单/余额/退款/调整/统计页+用户明细页+余额卡明细入口

admin/src/App.vue

@@ -30,6 +30,7 @@ import Trends from './views/Trends.vue'
 import Quotas from './views/Quotas.vue'
 import Feedbacks from './views/Feedbacks.vue'
 import Logs from './views/Logs.vue'
+import VpayOrders from './views/VpayOrders.vue'
 
 const token = ref(getToken())
 const view = ref('dashboard')
@@ -42,6 +43,7 @@ const menus = [
   { key: 'trends', label: '趋势管理', icon: '📈', comp: Trends },
   { key: 'quotas', label: '问答额度', icon: '💬', comp: Quotas },
   { key: 'feedbacks', label: '反馈管理', icon: '📝', comp: Feedbacks },
+  { key: 'vpay', label: '订单/余额', icon: '💰', comp: VpayOrders },
   { key: 'logs', label: '访问日志', icon: '🗂️', comp: Logs },
 ]