Adopts bedrock/venues.md and reconciles externals.md, which dropped its four-line
venue section in favour of the one sentence that is actually about externals.
The staleness check compared only documents present in both the stamp and the
locks, so a section gaining a page never flagged its guide — and the bedrock
guide enumerates its pages by hand. It went silently incomplete the moment venues
was adopted. Now reports changed, added and gone separately, in words that fit
each case.
Found the same way as the sidebar: by adopting something real for the first time.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>