Rename the web interface to Daynivo Kiosk Manager with the Daynivo logo

The Daynivo mark sits on a small white tile in the navy bar, where its
navy parts would otherwise disappear; the favicon is Daynivo's too.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/voxip_kiosk/web/templates/base.html

@@ -5,8 +5,8 @@
   <meta charset="utf-8">
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <meta name="csrf-token" content="{{ csrf_token() }}">
-  <title>{% block title %}{{ title or "Beheer" }}{% endblock %} · VoxIP Kiosk Manager</title>
-  <link rel="icon" href="{{ url_for('static', filename='logo.svg') }}" type="image/svg+xml">
+  <title>{% block title %}{{ title or "Beheer" }}{% endblock %} · Daynivo Kiosk Manager</title>
+  <link rel="icon" href="{{ url_for('static', filename='favicon.png') }}" type="image/png">
   <link rel="stylesheet" href="{{ url_for('static', filename='app.css') }}?v={{ version }}">
   <script src="{{ url_for('static', filename='app.js') }}?v={{ version }}" defer></script>
 </head>
@@ -14,8 +14,8 @@
   <header class="topbar">
     <div class="topbar-inner">
       <a class="brand" href="{{ url_for('ui.dashboard') }}">
-        <img src="{{ url_for('static', filename='logo.svg') }}" alt="" width="28" height="28">
-        <span><strong>VoxIP</strong> Kiosk Manager</span>
+        <span class="brand-mark"><img src="{{ url_for('static', filename='logo-mark.png') }}" alt="" width="34" height="22"></span>
+        <span><strong>Daynivo</strong> Kiosk Manager</span>
       </a>
       {% if logged_in %}
       <button class="nav-toggle" type="button" aria-controls="mainnav" aria-expanded="false" data-nav-toggle>