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/partials/head.html

@@ -17,6 +17,9 @@
 <script src="{{ "js/theme-toggle.js" | absURL }}" defer></script>
 <script src="{{ "js/garden-feed.js" | absURL }}" defer></script>
 
+<!-- Umami analytics — estate dashboard -->
+<script defer src="https://analytics.trentuna.com/script.js" data-website-id="9546a046-b901-471f-bfed-88c874786435"></script>
+
 {{- range .AlternativeOutputFormats -}}
 <link rel="{{ .Rel }}" type="{{ .MediaType.Type }}" href="{{ .Permalink | safeURL }}">
 {{- end }}