- build:renderer builds Fabric.Frontend with relative base and copies
the static bundle into renderer/; dist/pack scripts run it first.
- main.js: production loads renderer/index.html when present (falls
back to offline.html); packaged app no longer needs a separate
frontend server (still talks to Center/Guild backends, which the
login screen points at — file:// origin is CORS-allowed).
- package files += renderer/**; gitignore renderer/.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
