M0: Skelett + Auth-Grundgerüst (Keycloak-OIDC + API-Token)

- Symfony 7.4 LTS, PHP 8.4, FrankenPHP, SQLite (3-Layer src/UI|Logic|Data)
- Auth: manueller OidcClient (Authorization-Code) im UI-Layer, kein
  Security-Bundle/league; Session-Gate via SessionAuthSubscriber
- API-Guard via statischem X-Api-Token (ApiTokenSubscriber); ExceptionSubscriber
- UserEntity (Auto-Provision) + Init-Migration
- Docker (php:8.4-frankenphp) + compose (essen.ljh31.de, traefik-net external)
- SmokeTests (7) grün: Redirect-Fälle, API-Token, Auth-Render, Logout

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

templates/home/index.html.twig

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+{% extends 'layout/base.html.twig' %}
+
+{% block title %}Start · svc-essensplanung{% endblock %}
+
+{% block body %}
+    <h1>{{ name }}</h1>
+    <div class="card">
+        <p>Willkommen zur Essensplanung! (M0-Skelett)</p>
+        <p><strong>E-Mail:</strong> {{ email }}</p>
+        <p><strong>Redirect-Pfad:</strong> <code>{{ redirect }}</code></p>
+        <p>M1: CRUD-Slice (Dish-Create/Update/Delete/List) folgt.</p>
+    </div>
+{% endblock %}

templates/layout/base.html.twig

@@ -0,0 +1,63 @@
+<!DOCTYPE html>
+<html lang="de" dir="ltr">
+<head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <title>{% block title %}svc-essensplanung{% endblock %}</title>
+    <style>
+        :root {
+            --bg: #f4f4f4;
+            --fg: #112233;
+            --card: #fff;
+            --accent: #0a7bff;
+            --muted: #667;
+            --warn: #b45309;
+        }
+        * { box-sizing: border-box; }
+        body {
+            margin: 0;
+            font: 16px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
+            background: var(--bg);
+            color: var(--fg);
+        }
+        header {
+            display: flex;
+            justify-content: space-between;
+            align-items: center;
+            padding: 0.75rem 1rem;
+            background: var(--card);
+            box-shadow: 0 1px 0 #ddd;
+        }
+        header a {
+            color: var(--accent);
+            text-decoration: none;
+            margin-left: 1rem;
+        }
+        main {
+            max-width: 40rem;
+            margin: 2rem auto;
+            padding: 0 1rem;
+        }
+        .card {
+            background: var(--card);
+            padding: 1.25rem;
+            border-radius: 0.5rem;
+            box-shadow: 0 1px 2px rgba(0,0,0,.06);
+        }
+    </style>
+    {% block stylesheets %}{% endblock %}
+</head>
+<body>
+    <header>
+        <strong>essen.ljh31.de</strong>
+        <nav>
+            <a href="logout">Abmelden</a>
+        </nav>
+    </header>
+    <main>
+        {% block body %}{% endblock %}
+    </main>
+    <script src="{{ asset('js/htmx.min.js') }}"></script>
+    {% block javascripts %}{% endblock %}
+</body>
+</html>