New tool: show how a thread/system/site changed over time by diffing
Cloverleaf NetConfig revision snapshots, annotated with who saved each and
when. Handles the non-zero-padded NetConfig<TS> revision dirs by parsing the
prologue date into a sortable key; scopes diffs to the requested thread/system
via nc-parse. Flags: <thread>[.<site>], --system, --site, --format
timeline|diff, --limit, --since. Wired as nc_revisions.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
