Rename display name: SvxPortal -> Reflector Dashboard (technical identifiers unchanged)

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

auth/admin_config.php

@@ -1,6 +1,6 @@
 <?php
 /*
- * SvxPortal — web front-end for SvxReflector
+ * Reflector Dashboard — web front-end for SvxReflector
  * Copyright (C) 2026 SA7AUX (Björn)
  * SPDX-License-Identifier: AGPL-3.0-or-later
  *
@@ -18,7 +18,7 @@ $me = acct_get($uuid);
 $lvl = acct_admin_level($uuid);
 if ($lvl < 2) { header('Location: /'); exit; }
 
-$page_title = 'Admin · Config — SvxPortal';
+$page_title = 'Admin · Config — Reflector Dashboard';
 require __DIR__ . '/header.php';
 ?>
 <div class="container py-4" style="max-width:800px;">