Ensures LND Connect works through every deployment path:
- Nginx: CORS $http_origin on /lnd-connect-info (both HTTP+HTTPS)
- Nginx: no cookie gate (backend is 127.0.0.1-only)
- LND UI source: fetch with credentials: 'include'
- Deploy: rebuilds LND UI with --no-cache every deploy
- First-boot: --restart unless-stopped + memory limits on UI containers
- Backend: bound to 127.0.0.1:5678 in systemd service
Root cause was CORS: LND UI on :8081 fetching :80 is cross-origin.
Browser blocked reading the 200 response without CORS headers.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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