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

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

auth/tgrequest.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
  *
@@ -15,7 +15,7 @@ start_session();
 $uuid = $_SESSION['uid'] ?? null;
 if (!is_string($uuid) || $uuid === '') { header('Location: /'); exit; }
 
-$page_title = 'Request a TG — SvxPortal';
+$page_title = 'Request a TG — Reflector Dashboard';
 require __DIR__ . '/header.php';
 ?>
 <div class="container py-4" style="max-width:640px;">