Red. On a one-document bundle every concept id starts with the same
directory, and the first fusion signal reads the id's segments beside the
title. When the question names that directory every concept answers those
tokens, except the concept whose title already carried them -- the overlap
counts a question token once -- so the concept distinguished by naming the
document loses that distinction, and a concept answering nothing but the
directory stops being a guess.
Three tests fail here and one known-negative passes before and after the
repair: with two documents no prefix is shared and a document's directory
still separates its concepts from the other document's.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
