feat: add MCP server with resources, tools, auth, and Traefik routing

- Add backend/app/mcp_server.py with FastMCP server (hms-cms)
- Resources: design-rules, page-structure, sync-status
- Tools: trigger_sync, get_sync_log, set_rentman_token, read_file,
  write_file, create_page, deploy, git_commit, git_status
- Bearer token auth via MCP_AUTH_TOKEN env var
- Mount MCP at /mcp with streamable HTTP transport
- Integrate session manager in FastAPI lifespan
- Add Traefik labels for external /mcp route on hms.media-on.de
- Add git, docker.io, curl to backend Dockerfile
- Mount repo root + docker socket in backend container
- Add mcp>=1.0.0 to requirements.txt

frontend/src/components/LegalContentPage.tsx

@@ -0,0 +1,36 @@
+import { useEffect } from 'react';
+
+interface Props {
+  title: string;
+  content?: string;
+  loading?: boolean;
+}
+
+export default function LegalContentPage({ title, content = '', loading = false }: Props) {
+  useEffect(() => {
+    document.title = `${title} – HMS Licht & Ton`;
+  }, [title]);
+
+  if (loading) {
+    return (
+      <div className="max-w-3xl mx-auto">
+        <div className="space-y-4">
+          <div className="hms-skeleton rounded-md" style={{ height: 32, width: '60%' }} />
+          <div className="hms-skeleton rounded-md" style={{ height: 20 }} />
+          <div className="hms-skeleton rounded-md" style={{ height: 20, width: '90%' }} />
+          <div className="hms-skeleton rounded-md" style={{ height: 20 }} />
+          <div className="hms-skeleton rounded-md" style={{ height: 20, width: '80%' }} />
+        </div>
+      </div>
+    );
+  }
+
+  return (
+    <div className="max-w-3xl mx-auto">
+      <article>
+        <h1 className="text-3xl font-bold text-text mb-6">{title}</h1>
+        <div className="prose prose-invert max-w-none text-text-muted" dangerouslySetInnerHTML={{ __html: content }} />
+      </article>
+    </div>
+  );
+}