Set Homepage to single-column group layout

Add maxGroupColumns: 1 so each category gets its own full-width row,
with service tiles arranged side-by-side within each group.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

argocd/manifests/homepage/settings.yaml

@@ -6,14 +6,15 @@ quicklaunch:
   provider: custom
   url: https://kagi.com/search?q=
   suggestionUrl: https://kagisuggest.com/api/autosuggest?q=
+maxGroupColumns: 1
 layout:
   Host Services:
-    style: row
+    style: column
   Home:
-    style: row
+    style: column
   Content:
-    style: row
+    style: column
   Infrastructure:
-    style: row
+    style: column
   Services:
-    style: row
+    style: column