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

scripts/prebuild-fetch.sh

@@ -25,6 +25,7 @@ ENDPOINTS=(
   "builds"
   "trends?limit=5"
   "state"
+  "api/garden"
 )
 
 echo "→ Fetching Estate API data for garden build…"