fix: sync CSS classes with refactored layout, restore missing sidebar items, add asset versioning, fix routes and auth

views/servers/database.php

@@ -95,5 +95,5 @@ $status = $db['status'] ?? 'inactive';
 const serverId = <?= json_encode($server['id']) ?>;
 const databases = <?= json_encode(array_column($databases, 'name')) ?>;
 </script>
-<script src="/assets/js/database-manager.js"></script>
+<script src="/assets/js/database-manager.js?v=<?= asset_version() ?>"></script>
 <?php endif; ?>