For any page name, the set of pages that link to it: extract wikilinks from every
union page (new UnionGraph.iter_pages enumeration) and index the resolved ones by
target name. Red-links create no backlinks; entries carry source provenance; a
chorus target aggregates the backlinks of all members under one name. Derived/
recomputable, stores nothing canonical.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
A CommonMark wikilink extension: extract [[Target]] / [[Target|label]] from a
page body (skipping fenced + inline code, preserving offsets), and resolve each
target through the union — resolved is a link, unresolved is a createable
red-link (never a dropped reference). CamelCase auto-linking is off by default,
opt-in per space, and never double-counts a target already inside [[...]]. Link
model + resolution are core; rendering stays L6. New views/ package.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
