feat: 通用授权后台、离线证、Waffo 支付页与仪表盘加强

支持多产品计划展示、LICOFF 离线签发、支付独立配置与调试，以及分析看板；同步更新 README 与集成文档。

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/src/views/Licenses.vue

@@ -17,6 +17,14 @@
         </div>
       </div>
 
+      <el-alert
+        type="info"
+        :closable="false"
+        show-icon
+        title="本页默认仅展示在线 License。离线序列号请前往「授权管理 → 离线 License」。"
+        style="margin-bottom: 12px"
+      />
+
       <el-table :data="list" v-loading="loading" stripe>
         <el-table-column prop="license_key" label="License Key" min-width="220" />
         <el-table-column prop="customer_name" label="客户" min-width="100" />
@@ -167,6 +175,7 @@ async function loadData() {
     const res = await getLicenses({
       page: page.value, page_size: pageSize.value,
       keyword: keyword.value, status: statusFilter.value, product_id: productFilter.value,
+      channel: 'online',
     })
     list.value = res.data.list || []
     total.value = res.data.total
@@ -220,14 +229,13 @@ async function toggle(row, status) {
 async function handleForceOffline(act) {
   await ElMessageBox.confirm(`确定强制下线设备「${act.device_name || act.device_id}」？`, '提示', { type: 'warning' })
   await forceOffline(detail.license.id, act.id)
-  // 刷新详情 // Logan.Li
   const res = await getLicense(detail.license.id)
   detail.activations = res.data.activations || []
 }
 
 async function exportData() {
   try {
-    const res = await exportLicenses({ status: statusFilter.value, product_id: productFilter.value })
+    const res = await exportLicenses({ status: statusFilter.value, product_id: productFilter.value, channel: 'online' })
     const url = window.URL.createObjectURL(new Blob([res]))
     const a = document.createElement('a')
     a.href = url