A code-only watch/update rebuild never re-creates a semantic-backed document node, so an
authored [[wikilink]] to such a doc resolved to a missing canonical id and reconcile
silently dropped the edge. Re-parse each markdown source and repoint authored references
edges onto a unique representative node for the target file (canonical id, else unique page
node, else unique document node; ambiguous -> keep the existing edge), preserving links to
the semantic tier across a code-only rebuild without resurrecting a deleted target.