Platform batch show: add spot-check next link

app/Http/Controllers/Admin/PlatformBatchController.php

@@ -25,6 +25,9 @@ class PlatformBatchController extends Controller
         $incomingBack = (string) $request->query('back', '');
         $safeBackForLinks = BackUrl::sanitizeForLinks($incomingBack);
 
+        // 抽样复核：换一单（用 id 游标避免随机导致测试不稳定）
+        $spotAfterId = (int) $request->query('spot_after_id', 0);
+
         if ($type === '' || $runId === '') {
             return view('admin.platform_batches.show', [
                 'type' => $type,
@@ -190,6 +193,10 @@ class PlatformBatchController extends Controller
             $sampleQuery->whereRaw("JSON_UNQUOTE(JSON_EXTRACT(meta, '{$keyPrefix}.run_id')) = ?", [$runId]);
         }
 
+        if ($spotAfterId > 0) {
+            $sampleQuery->where('id', '<', $spotAfterId);
+        }
+
         if ($type === 'bas') {
             $sampleQuery->whereRaw("JSON_EXTRACT(meta, '$.subscription_activation.subscription_id') IS NOT NULL")
                 ->whereRaw("JSON_EXTRACT(meta, '$.subscription_activation_error.message') IS NULL");