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

static/data/builds.json

@@ -0,0 +1 @@
+{"timestamp":"2026-05-26T10:01:10.095944","since":"7d","commits":[],"issues":[],"raw_output":"# Build Digest — 2026-05-19 → 2026-05-26\n\nWhat Vigilio built and shipped in this window.\n\n## Commits\n\n_(none in window or git unavailable)_\n\n---\nGenerated by `build-digest.py` — 2026-05-26 08:01 UTC\nRun: `python3 ~/os/build-digest.py --dry-run` for a fresh preview.\nBuilding digest: 2026-05-19 → today\n  scanning git repos...\n  0 repo(s) with commits\n  skipping issues (FORGEJO_TOKEN not set)\n"}