refactor(back): add withBackAndFragment helper and use on platform_orders index

app/Support/BackUrl.php

@@ -92,6 +92,28 @@ class BackUrl
         return $path . $sep . \Illuminate\Support\Arr::query(['back' => $safeBackForLinks]);
     }
 
+    /**
+     * 给指定站内相对路径附加安全 back，并可选追加锚点（fragment）。
+     *
+     * 说明：fragment 仅允许 [A-Za-z0-9_-]，不符合则直接丢弃 fragment。
+     * 典型用途：列表页行级「去补回执 / 去补退款」等链接，需要跳转到详情页某个区块。
+     */
+    public static function withBackAndFragment(string $path, string $safeBackForLinks = '', string $fragment = ''): string
+    {
+        $url = self::withBack($path, $safeBackForLinks);
+
+        $fragment = ltrim((string) $fragment, '#');
+        if ($fragment === '') {
+            return $url;
+        }
+
+        if (!preg_match('/^[A-Za-z0-9_-]+$/', $fragment)) {
+            return $url;
+        }
+
+        return $url . '#' . $fragment;
+    }
+
     /**
      * 当前路径下的“快捷筛选”链接构造器：
      * - 仅保留指定上下文键（例如 merchant_id/plan_id/keyword/lead_id 等）

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

@@ -1011,7 +1011,7 @@
                     @php
                         $hasReceiptEvidenceRow = (data_get($order->meta, 'payment_summary.total_amount') !== null)
                             || (data_get($order->meta, 'payment_receipts.0.amount') !== null);
-                        $noReceiptFixUrlRow = '/admin/platform-orders/' . $order->id . '?' . \Illuminate\Support\Arr::query(['back' => $selfWithoutBack]) . '#add-payment-receipt';
+                        $noReceiptFixUrlRow = \App\Support\BackUrl::withBackAndFragment('/admin/platform-orders/' . $order->id, $selfWithoutBack, 'add-payment-receipt');
                     @endphp
                     @if($order->payment_status === 'paid' && ! $hasReceiptEvidenceRow)
                         <div class="muted text-danger muted-xs row-warn">