Buchungskalender: Portal-Bereich und Anfragen

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

public/dashboard.html

@@ -25,6 +25,7 @@
   <link rel="stylesheet" href="/analyse.css">
   <link rel="stylesheet" href="/termine.css">
   <link rel="stylesheet" href="/shop.css">
+  <link rel="stylesheet" href="/buchungen.css">
   <link rel="stylesheet" href="/zeiten.css">
 </head>
 <body class="portal-page dashboard-page kb-page">