cms: headless CMS vor Hugo (Supabase + Node-API + React-Admin)

All-in-One docker-compose-Stack (Muster von RAPPORT-SERVER gespiegelt):
db/auth/rest/kong + cms-Service (Node-API + Hugo-Binary 0.161.1 + Admin-SPA).

- DB-backed: posts-Tabelle kanonisch, MD ist generiertes Artefakt
- echte Hugo-Vorschau via draft:true + --buildDrafts → /_preview
- Publish: DB → content/library/<section>/<slug>.md → hugo build → live
- Bild-Upload nach static/images/, Supabase-Auth schützt /api/*
- Proxmox-LXC-Script: legt Container an, generiert Secrets, startet Stack

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

cms/admin/src/main.jsx

@@ -0,0 +1,10 @@
+import React from 'react';
+import { createRoot } from 'react-dom/client';
+import App from './App.jsx';
+import './styles.css';
+
+createRoot(document.getElementById('root')).render(
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>,
+);