feat: complete cmpp gateway delivery recovery workflows

src/apps/admin/AdminHome.tsx

@@ -84,6 +84,7 @@ export function AdminHome() {
   const averageSuccessRate = dashboard?.today.successRate ?? 0;
   const todaySpend = (dashboard?.today.spendCents ?? 0) / 100;
   const activeConnectionCount = dashboard?.gatewayConnections.reduce((sum, item) => sum + (item._sum.currentConnections ?? 0), 0) ?? 0;
+  const downstreamAlertCount = dashboard?.downstreamDeliverySummary?.alertCount ?? 0;
 
   const sendTrendOption = useMemo(
     () => createLineOption({
@@ -253,6 +254,14 @@ export function AdminHome() {
                 <small>在线连接数。</small>
               </div>
             </div>
+            <div className="mini-status-card">
+              <RadioTower size={22} />
+              <div>
+                <span>下游投递告警</span>
+                <strong>{downstreamAlertCount} 条</strong>
+                <small>积压过久或近期失败。</small>
+              </div>
+            </div>
           </div>
         </div>
       </div>