Introduce CHANGELOG.md (Keep a Changelog) as the single source of release
notes, and scripts/release.sh (npm run release X.Y.Z) which promotes the
Unreleased section, commits the bare version as a real release commit, tags
it, and reopens the next -develop cycle. The Release workflow now verifies the
tagged commit's version equals the tag and publishes the CHANGELOG section as
the release notes instead of auto-generated commit lists.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Julien Herr