Sanitize pktapplayer query param in Packet/Index controller

Fixes a TypeError when pktapplayer is submitted as a plain string
(e.g. ?pktapplayer= or ?pktapplayer=1) instead of an array, which
would fail assignment to the array-typed model property. Now handles
both string and array input, and strips empty strings before casting
to int so blank values don't silently become zero.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: carlbennett

src/Controllers/Packet/Index.php

@@ -16,7 +16,8 @@ public function invoke(?array $args): bool
 
     $q = \BNETDocs\Libraries\Core\Router::query();
     $this->model->order = isset($q['order']) ? $q['order'] : 'packet-id-asc';
-    $this->model->pktapplayer = isset($q['pktapplayer']) ? $q['pktapplayer'] : [];
+    $pktapplayer = !isset($q['pktapplayer']) ? [] : (is_array($q['pktapplayer']) ? $q['pktapplayer'] : [$q['pktapplayer']]);
+    $this->model->pktapplayer = array_map('intval', array_filter($pktapplayer, fn($v) => $v !== ''));
 
     switch ($this->model->order)
     {