libs/<name>/ now supports a second population mode alongside git-copy
clones: a user-authored source.yaml declares a live external source
(SharePoint, Google Drive, a plain URL, or another connector), and the
new ckb-index-external skill builds a self-contained generated index
for it (index.md/entities/graph/log.md), scoped entirely to that
connector and never blended into the main wiki/.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
