Enhance: plans links to subscriptions/orders include back

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

@@ -4,6 +4,28 @@
 @section('page_title', '套餐管理')
 
 @section('content')
+@php
+    // back 参数用于“返回上一页（保留上下文）”，但 back 本身不应再包含 back（避免无限嵌套导致 URL 膨胀）
+    $currentQuery = request()->query();
+    unset($currentQuery['back']);
+    $selfWithoutBack = '/' . ltrim(request()->path(), '/');
+    if (count($currentQuery) > 0) {
+        $selfWithoutBack .= '?' . \Illuminate\Support\Arr::query($currentQuery);
+    }
+
+    // 用于构建“从套餐页跳转到订阅/订单页后可返回套餐页”的链接
+    $makeSubscriptionUrl = function (array $query) use ($selfWithoutBack) {
+        $query = $query + ['back' => $selfWithoutBack];
+
+        return '/admin/site-subscriptions?' . \Illuminate\Support\Arr::query($query);
+    };
+
+    $makePlatformOrderUrl = function (array $query) use ($selfWithoutBack) {
+        $query = $query + ['back' => $selfWithoutBack];
+
+        return '/admin/platform-orders?' . \Illuminate\Support\Arr::query($query);
+    };
+@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>
     <p class="muted">当前阶段先完成套餐主数据可见、可筛与口径收拢，后续再接授权项、售价规则与上下架动作。</p>
@@ -125,7 +147,7 @@
                 <td>
                     @php $subCount = (int) ($plan->subscriptions_count ?? 0); @endphp
                     @if($subCount > 0)
-                        <a class="link" href="/admin/site-subscriptions?plan_id={{ $plan->id }}">{{ $subCount }} 个</a>
+                        <a class="link" href="{!! $makeSubscriptionUrl(['plan_id' => $plan->id]) !!}">{{ $subCount }} 个</a>
                     @else
                         <span class="muted">0</span>
                     @endif
@@ -133,7 +155,7 @@
                 <td>
                     @php $orderCount = (int) ($plan->platform_orders_count ?? 0); @endphp
                     @if($orderCount > 0)
-                        <a class="link" href="/admin/platform-orders?plan_id={{ $plan->id }}">{{ $orderCount }} 单</a>
+                        <a class="link" href="{!! $makePlatformOrderUrl(['plan_id' => $plan->id]) !!}">{{ $orderCount }} 单</a>
                     @else
                         <span class="muted">0</span>
                     @endif