feat(payment): tighten gateways and implement Epay

Keep only balance, Alipay, WeChat, PayPal, Stripe, Epay, and card-pass
channels; remove placeholder aggregators. Add dual-channel Epay gateway
with MD5 notify/return, register cashier methods, and gate card-pass
redeem behind the payment channel switch.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

assets/admin/src/pages/payment/PaymentGateway.vue

@@ -2,10 +2,11 @@
   <PaymentSectionPage
     section="gateway"
     title="收款接口"
-    desc="管理支付网关、查看连接状态、配置回调口令。"
-    note="当前支持人工确认与测试联调；回调校验口令在接入真实网关时直接复用。"
+    desc="管理余额、支付宝、微信、PayPal、Stripe、易支付与卡密兑换通道。"
+    note="以渠道开关与凭据是否齐全为准；异步回调由各网关验签。卡密为兑换入口，不进入收银台。"
     :links="[
       { label: '余额充值', path: '/payment/recharge' },
+      { label: '充值卡', path: '/payment/card-pass' },
       { label: '付费内容', path: '/payment/paid' },
     ]"
   >
@@ -16,7 +17,7 @@
             <n-grid-item v-for="gw in gateways" :key="gw.id">
               <div class="aksrt-gateway__card">
                 <div class="aksrt-gateway__icon" :class="gw.configured ? 'aksrt-gateway__icon--active' : ''">
-                  <i :class="gw.id === 'balance' ? 'fas fa-wallet' : 'fas fa-credit-card'"></i>
+                  <i :class="iconFor(gw.id)"></i>
                 </div>
                 <div>
                   <strong>{{ gw.name }}</strong>
@@ -31,39 +32,8 @@
           <n-empty v-if="!loading && gateways.length === 0" description="暂无已注册的支付网关" />
         </n-card>
 
-        <n-card class="aksrt-section-card" title="运行摘要">
-          <n-grid :cols="4" :x-gap="12" :y-gap="12">
-            <n-grid-item>
-              <div class="aksrt-gateway__stat">
-                <strong>{{ modeLabel }}</strong>
-                <p>当前模式</p>
-              </div>
-            </n-grid-item>
-            <n-grid-item>
-              <div class="aksrt-gateway__stat">
-                <strong :class="overview.gateway?.test_enabled ? 'aksrt-text-warning' : ''">
-                  {{ overview.gateway?.test_enabled ? '启用' : '关闭' }}
-                </strong>
-                <p>测试网关</p>
-              </div>
-            </n-grid-item>
-            <n-grid-item>
-              <div class="aksrt-gateway__stat">
-                <strong :class="overview.gateway?.manual_review ? 'aksrt-text-info' : ''">
-                  {{ overview.gateway?.manual_review ? '启用' : '关闭' }}
-                </strong>
-                <p>人工复核</p>
-              </div>
-            </n-grid-item>
-            <n-grid-item>
-              <div class="aksrt-gateway__stat">
-                <n-tag :type="overview.gateway?.callback_secret ? 'success' : 'warning'" size="small" round>
-                  {{ overview.gateway?.callback_secret ? '已设置' : '未设置' }}
-                </n-tag>
-                <p>回调口令</p>
-              </div>
-            </n-grid-item>
-          </n-grid>
+        <n-card v-if="overview.help_text" class="aksrt-section-card" title="运行说明">
+          <p class="aksrt-gateway__help">{{ overview.help_text }}</p>
         </n-card>
       </n-spin>
     </template>
@@ -71,7 +41,7 @@
 </template>
 
 <script setup>
-import { ref, computed, onMounted } from 'vue'
+import { ref, onMounted } from 'vue'
 import { useMessage } from 'naive-ui'
 import PaymentSectionPage from '@/pages/payment/PaymentSectionPage.vue'
 import api from '@/api'
@@ -81,12 +51,14 @@ const gateways = ref([])
 const overview = ref({})
 const loading = ref(false)
 
-const modeLabel = computed(() => {
-  const mode = overview.value.gateway?.mode
-  if (mode === 'test_gateway') return '测试网关'
-  if (mode === 'adapter_ready') return '适配器就绪'
-  return '人工确认'
-})
+function iconFor(id) {
+  if (id === 'balance') return 'fas fa-wallet'
+  if (id === 'alipay' || id === 'epay_alipay') return 'fab fa-alipay'
+  if (id === 'wechatpay' || id === 'epay_wxpay') return 'fab fa-weixin'
+  if (id === 'paypal') return 'fab fa-paypal'
+  if (id === 'stripe') return 'fab fa-stripe-s'
+  return 'fas fa-credit-card'
+}
 
 onMounted(async () => {
   loading.value = true
@@ -98,7 +70,9 @@ onMounted(async () => {
     if (gwRes?.data?.gateways) {
       gateways.value = gwRes.data.gateways
     }
-    if (ovRes?.data) {
+    if (ovRes?.data?.gateway) {
+      overview.value = ovRes.data.gateway
+    } else if (ovRes?.data) {
       overview.value = ovRes.data
     }
   } catch {
@@ -149,31 +123,10 @@ onMounted(async () => {
   color: var(--color-ink-4, #8a909c);
 }
 
-.aksrt-gateway__stat {
-  text-align: center;
-  padding: 16px;
-  border-radius: 8px;
-  background: var(--surface-2, #fafafa);
-}
-
-.aksrt-gateway__stat strong {
-  display: block;
-  font-size: 18px;
-  font-weight: 600;
-  color: var(--color-ink, #1a1a2e);
-}
-
-.aksrt-gateway__stat p {
-  margin: 4px 0 0;
-  font-size: 12px;
-  color: var(--color-ink-4, #8a909c);
-}
-
-.aksrt-text-warning {
-  color: var(--color-warning, #f59e0b);
-}
-
-.aksrt-text-info {
-  color: var(--color-info, #3b82f6);
+.aksrt-gateway__help {
+  margin: 0;
+  font-size: 13px;
+  color: var(--color-ink-3, #5c6370);
+  line-height: 1.6;
 }
 </style>