Every context file carried its own copy of the same little guide factory and
the same context literal. Thirteen screens of a trip would have made thirteen
copies of it, which is both the duplication a quality gate counts and the
hand-mirrored state the repository asks us not to keep, so the shape moves into
defineScreen and a context file becomes data: ids, counts, docs, cross-links.
Four doc links never resolved. Trip-Planner and Sharing-and-Collaboration are
not wiki pages (Trip-Planner-Overview and Trip-Members-and-Sharing are), the
places import anchor is importing-multiple-places, and the offline anchor was
written in GitHub's slug, which is not the one the in-app reader produces.
Nothing caught them, so the registry test now checks every slug and every
anchor against wiki/, with the heading slug itself lifted out of HelpPage so
the reader and the test cannot drift apart.
Maurice