garden: port content, rebuild public/, add new scripts and features

- Ported Ludo profile from vault to garden
- Added auto-rebuild watcher scripts
- Updated static data snapshots
- Added garden-features.js and api-garden.json
- Added GARDEN-CONTENT-GAPS.md for tracking
- Rebuilt Hugo public/ output

layouts/about/list.html

@@ -0,0 +1,9 @@
+{{ define "main" }}
+<section>
+  <header>
+    <h1>{{ .Title }}</h1>
+    {{- with .Description }}<p data-text="dim">{{ . }}</p>{{- end }}
+  </header>
+  {{ .Content }}
+</section>
+{{ end }}