Hugo site: layouts, config and pilot content

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YDRjtmAiNpo5mK5N3d7QwZ

layouts/_partials/grouped.html

@@ -0,0 +1,15 @@
+{{/* section pages grouped by .Params.group; "cards" shows thumbnails */}}
+{{ range .pages.GroupByParam "group" }}
+<h2>{{ .Key }}</h2>
+{{ if $.cards }}
+<div class="thumbs">
+  {{ range .Pages.ByTitle }}
+  <a href="{{ .RelPermalink }}">{{ with .Params.image }}<img src="{{ . }}" alt="" loading="lazy">{{ end }}<span>{{ .Title }}</span></a>
+  {{ end }}
+</div>
+{{ else }}
+<ul class="links">
+  {{ range .Pages.ByTitle }}<li><a href="{{ .RelPermalink }}">{{ .Title }}</a></li>{{ end }}
+</ul>
+{{ end }}
+{{ end }}