Initial Kaffeekasse SaaS restart

public/router.php

@@ -0,0 +1,12 @@
+<?php
+
+declare(strict_types=1);
+
+$path = parse_url($_SERVER['REQUEST_URI'] ?? '/', PHP_URL_PATH);
+$file = __DIR__ . ($path === '/' ? '/index.php' : (string) $path);
+
+if ($path !== '/' && is_file($file)) {
+    return false;
+}
+
+require __DIR__ . '/index.php';