초기 커밋: 5130 레거시 시스템

- URL 하드코딩 → .env APP_URL 기반 동적 URL로 변경
- DB 연결 하드코딩 → .env 기반으로 변경
- MySQL strict mode DATE 오류 수정

DBcontrol/libraries/classes/Providers/ServerVariables/ServerVariablesProvider.php

@@ -0,0 +1,36 @@
+<?php
+
+declare(strict_types=1);
+
+namespace PhpMyAdmin\Providers\ServerVariables;
+
+use Williamdes\MariaDBMySQLKBS\Search;
+use function class_exists;
+
+class ServerVariablesProvider
+{
+    /** @var ServerVariablesProviderInterface|null */
+    private static $instance = null;
+
+    public static function getImplementation(): ServerVariablesProviderInterface
+    {
+        if (self::$instance !== null) {
+            return self::$instance;
+        }
+
+        if (self::mariaDbMySqlKbsExists()) {
+            self::$instance = new MariaDbMySqlKbsProvider();
+
+            return self::$instance;
+        }
+
+        self::$instance = new VoidProvider();
+
+        return self::$instance;
+    }
+
+    public static function mariaDbMySqlKbsExists(): bool
+    {
+        return class_exists(Search::class);
+    }
+}