footer: schwarz bis ganz unten (Body-Bottom-Padding raus, min-height:100vh) + Forum→Dialog

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

assets/css/custom.css

@@ -80,8 +80,9 @@ body {
   font-family: var(--font-family-serif);
   font-size: var(--font-size-base);
   line-height: 1.55;
-  padding: 0 0 var(--spacing-xl);
+  padding: 0;
   margin: 0;
+  min-height: 100vh;
   gap: var(--spacing-sm);
   display: grid;
   grid-template-rows: auto 1fr auto;

layouts/_partials/footer.html

@@ -4,7 +4,7 @@
     <ul>
       <li><a href="/manifest/">Manifest</a></li>
       <li><a href="/colophon/">Colophon</a></li>
-      <li><a href="https://openstudio.kgva.ch">Forum ↗</a></li>
+      <li><a href="/dialog/">Dialog</a></li>
       <li><a href="https://gitea.kgva.ch">Code ↗</a></li>
       <li><a href="/index.xml">RSS</a></li>
     </ul>