修复判断入口文件ip_check.php以及新增复制配置选项

lib/Cloak/CountryAllowlist.php

@@ -2,6 +2,8 @@
 /**
  * SHOW_SITE_COUNTRY 允许列表解析与比对
  */
+require_once __DIR__ . '/CountryCodeNormalizer.php';
+
 class CountryAllowlist
 {
     /**
@@ -34,9 +36,10 @@ class CountryAllowlist
         if ($allowlist === []) {
             return true;
         }
-        if ($countryCode === null || $countryCode === '') {
+        $normalized = CountryCodeNormalizer::toAlpha2($countryCode);
+        if ($normalized === null || $normalized === '') {
             return false;
         }
-        return in_array(strtoupper($countryCode), $allowlist, true);
+        return in_array($normalized, $allowlist, true);
     }
 }