Add temporary PHP config check script

phpcheck.php

@@ -0,0 +1,12 @@
+<?php
+// Temporary diagnostic - delete after checking
+header('Content-Type: application/json');
+echo json_encode([
+    'upload_max_filesize' => ini_get('upload_max_filesize'),
+    'post_max_size' => ini_get('post_max_size'),
+    'memory_limit' => ini_get('memory_limit'),
+    'max_execution_time' => ini_get('max_execution_time'),
+    'php_version' => phpversion(),
+    'server' => gethostname(),
+    'timestamp' => date('c')
+]);