- VERSION holds the formal version (0.0.1), single source of truth.
- deploy.sh stamps the served HTML: "X.Y.Z" on a clean commit tagged v<VERSION>,
else "X.Y.Z-dev.<utc-ts>.<sha>[.dirty]".
- index.html shows the build version in the header badge (APP_VERSION).
- release.sh cuts a formal release (sets VERSION + tags v<VERSION>).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>