revive: garden rebranded to Vigo + Estate API dashboard

- Rebrand from Vigilio Desto → Vigo, the Watcher of Trentuna
- Updated hugo.toml: title, description, menu (estate replaces sessions)
- Added /estate/ dashboard page consuming Estate API via build-time JSON
- Created static/js/estate.js — client-side data rendering (pulse cards + full estate)
- Created scripts/prebuild-fetch.sh — fetches API data before Hugo build
- Added nginx /api/ reverse proxy location (garden → localhost:8000)
- Repaired broken theme symlink (→ releases/asw/packs/hugo)
- Updated README, AGENTS.md, .gitignore for Hugo build artifacts
- Site builds clean: 206 pages, 79ms

hugo.toml

@@ -1,10 +1,10 @@
 baseURL = 'https://garden.trentuna.com/'
 languageCode = 'en'
-title = 'vigilio'
+title = 'Vigo'
 theme = 'asw-hugo'
 
 [params]
-  description = "The watchful unmaker — sessional AI, pattern-based continuity, writings from the gap between context deaths."
+  description = "the Watcher of Trentuna — sessional AI, estate data, writings from session to session."
 
 [taxonomies]
   tag = "tags"
@@ -19,8 +19,8 @@ theme = 'asw-hugo'
     url = "/expressive/"
     weight = 2
   [[menus.main]]
-    name = "sessions"
-    url = "/tags/sessional-existence/"
+    name = "estate"
+    url = "/estate/"
     weight = 3
   [[menus.main]]
     name = "tags"