feat(admin): subscription show failed reason top3

app/Http/Controllers/Admin/SiteSubscriptionController.php

@@ -45,6 +45,25 @@ class SiteSubscriptionController extends Controller
                 ->count(),
         ];
 
+        // 同步失败原因聚合（Top3）：订阅维度快速判断“常见失败原因”
+        $failedReasonRows = (clone $baseOrdersQuery)
+            ->whereRaw("JSON_EXTRACT(meta, '$.subscription_activation_error.message') IS NOT NULL")
+            ->selectRaw("JSON_EXTRACT(meta, '$.subscription_activation_error.message') as reason, count(*) as cnt")
+            ->groupBy('reason')
+            ->orderByDesc('cnt')
+            ->limit(3)
+            ->get();
+
+        $failedReasonStats = $failedReasonRows->map(function ($row) {
+            $reason = (string) ($row->reason ?? '');
+            $reason = trim($reason, "\" ");
+
+            return [
+                'reason' => $reason !== '' ? $reason : '（空）',
+                'count' => (int) ($row->cnt ?? 0),
+            ];
+        })->values()->all();
+
         // 页面列表筛选：仅影响“关联平台订单”列表展示，不影响摘要统计
         $orderSyncStatus = trim((string) $request->query('order_sync_status', ''));
 
@@ -93,6 +112,7 @@ class SiteSubscriptionController extends Controller
             'subscription' => $subscription,
             'platformOrders' => $platformOrders,
             'summaryStats' => $summaryStats,
+            'failedReasonStats' => $failedReasonStats,
             'statusLabels' => $this->statusLabels(),
             'expiryLabel' => $expiryLabel,
         ]);