feat(plans): make summary cards clickable for governance navigation

resources/views/admin/plans/index.blade.php

@@ -27,6 +27,13 @@
     // - 拒绝 nested back=（避免 URL 膨胀/绕过）
     $incomingBack = (string) request()->query('back', '');
     $safeBackForLinks = \App\Support\BackUrl::sanitizeForLinks($incomingBack);
+
+    // 用于摘要卡等入口：保留当前 query 并覆盖字段，同时安全透传 back。
+    $safeFullUrlWithQuery = function (array $overrides = []) use ($safeBackForLinks) {
+        return \App\Support\BackUrl::currentPathWithQuery($overrides, $safeBackForLinks);
+    };
+
+    $planIndexUrl = \App\Support\BackUrl::withBack('/admin/plans', $safeBackForLinks);
 @endphp
 <div class="card mb-20">
     <p class="muted muted-tight">这里是总台视角的套餐目录页，用于沉淀平台可售卖的标准能力包。</p>
@@ -123,19 +130,27 @@
 <div class="grid-4 mb-20">
     <div class="card">
         <h3>套餐总数</h3>
-        <div class="num-md">{{ $summaryStats['total_plans'] ?? 0 }}</div>
+        <div class="num-md">
+            <a class="link" href="{!! $planIndexUrl !!}">{{ $summaryStats['total_plans'] ?? 0 }}</a>
+        </div>
     </div>
     <div class="card">
         <h3>启用中套餐</h3>
-        <div class="num-md">{{ $summaryStats['active_plans'] ?? 0 }}</div>
+        <div class="num-md">
+            <a class="link" href="{!! $safeFullUrlWithQuery(['status' => 'active', 'page' => null]) !!}">{{ $summaryStats['active_plans'] ?? 0 }}</a>
+        </div>
     </div>
     <div class="card">
         <h3>月付套餐</h3>
-        <div class="num-md">{{ $summaryStats['monthly_plans'] ?? 0 }}</div>
+        <div class="num-md">
+            <a class="link" href="{!! $safeFullUrlWithQuery(['billing_cycle' => 'monthly', 'page' => null]) !!}">{{ $summaryStats['monthly_plans'] ?? 0 }}</a>
+        </div>
     </div>
     <div class="card">
         <h3>年付套餐</h3>
-        <div class="num-md">{{ $summaryStats['yearly_plans'] ?? 0 }}</div>
+        <div class="num-md">
+            <a class="link" href="{!! $safeFullUrlWithQuery(['billing_cycle' => 'yearly', 'page' => null]) !!}">{{ $summaryStats['yearly_plans'] ?? 0 }}</a>
+        </div>
     </div>
     <div class="card">
         <h3>关联订阅总量</h3>