- README: new "Migrating from Cloudsmith" section with v2 and v3
command sequences and a one-line reason (Cloudsmith being phased out)
- docs/upgrade-paths.md: full matrix of every starting version × repo
combination with links to the right guide; v4.x rows stubbed with
placeholder instructions so users know what's coming and where to look
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Kevin Adams