CMS 2.0 - Theme engine, logging, admin improvements

Major changes:
- New ThemeManager with Twig templating and SCSS compilation
- Dynamic themes system (themes/default, themes/demo)
- LogManager with SQLite storage and syslog forwarding
- RequestLogger with static helper methods
- Admin UI overhaul (Bootstrap 5, dark mode)
- Admin config page with logging and theme settings
- Admin logs page with filters and search
- Removed legacy Mustache templates
- Removed test plugin and theme
- Composer dependencies: Twig, scssphp, CommonMark, MaxMind GeoIP

vendor/league/uri-interfaces/IPv4/GMPCalculator.php

@@ -0,0 +1,70 @@
+<?php
+
+/**
+ * League.Uri (https://uri.thephpleague.com)
+ *
+ * (c) Ignace Nyamagana Butera <nyamsprod@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace League\Uri\IPv4;
+
+use GMP;
+
+use function gmp_add;
+use function gmp_cmp;
+use function gmp_div_q;
+use function gmp_init;
+use function gmp_mod;
+use function gmp_mul;
+use function gmp_pow;
+use function gmp_sub;
+
+use const GMP_ROUND_MINUSINF;
+
+final class GMPCalculator implements Calculator
+{
+    public function baseConvert(mixed $value, int $base): GMP
+    {
+        return gmp_init($value, $base);
+    }
+
+    public function pow(mixed $value, int $exponent): GMP
+    {
+        return gmp_pow($value, $exponent);
+    }
+
+    public function compare(mixed $value1, mixed $value2): int
+    {
+        return gmp_cmp($value1, $value2);
+    }
+
+    public function multiply(mixed $value1, mixed $value2): GMP
+    {
+        return gmp_mul($value1, $value2);
+    }
+
+    public function div(mixed $value, mixed $base): GMP
+    {
+        return gmp_div_q($value, $base, GMP_ROUND_MINUSINF);
+    }
+
+    public function mod(mixed $value, mixed $base): GMP
+    {
+        return gmp_mod($value, $base);
+    }
+
+    public function add(mixed $value1, mixed $value2): GMP
+    {
+        return gmp_add($value1, $value2);
+    }
+
+    public function sub(mixed $value1, mixed $value2): GMP
+    {
+        return gmp_sub($value1, $value2);
+    }
+}