py app init + zitadel doku

app/templates/base.html

@@ -0,0 +1,29 @@
+{#
+  Datei:   templates/base.html
+  Autor:   <Vorname Nachname>
+  Datum:   2026-06-17
+  Zweck:   Basis-Layout für alle Seiten. Erwartet: session.user (optional).
+#}
+<!DOCTYPE html>
+<html lang="de">
+<head>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>{% block title %}OIDC Showcase{% endblock %}</title>
+  <link rel="stylesheet" href="{{ url_for('static', filename='css/style.css') }}">
+</head>
+<body>
+  <nav>
+    <span class="nav-brand">OIDC Showcase</span>
+    {% if session.user %}
+    <div class="nav-user">
+      <span>{{ session.user.email }} &nbsp;·&nbsp; <em>{{ session.user.role }}</em></span>
+      <a href="{{ url_for('main.logout') }}">Abmelden</a>
+    </div>
+    {% endif %}
+  </nav>
+  <main>
+    {% block content %}{% endblock %}
+  </main>
+</body>
+</html>