feat: add active users and update user list style

index.php

@@ -20,8 +20,26 @@ include 'header.php';
 
 $slogans = file("slogans.txt");
 $slogan = $slogans[rand(0, count($slogans) - 1)];
+$activeUsers = json_decode(file_get_contents('/opt/html/online.json'), true);
 
 ?>
+<pre class="scroll">
+<h3>Użytkownicy online: <?php
+if (!empty($activeUsers)) {
+    echo '<marquee scrollamount="3" behavior="alternate">';
+    foreach ($activeUsers as $user) {
+        $username = htmlspecialchars($user);
+        echo "<a href='/~$username'>$username</a> &nbsp;";
+    }
+    echo '</marquee>';
+} else {
+    echo "/dev/null";
+}
+
+?></h3>
+
+</pre>
+
 <pre class="ascii">
    /$$               /$$       /$$
   | $$              | $$      | $$