An overview's borrowed sources were a snapshot taken at creation: a sub-article that left kept feeding it, a merge moved the borrowed notes into the target, and losing the borrowed notes deleted the overview and retired its natural slug while its sub-articles lived on. Overviews now carry an overview mark (optional plan field, format unchanged) and only their own sources; what they are written from is derived every run from their current sub-articles (in turn, at most 12), for staleness, fingerprints and the write. Note removal never deletes an overview; one left without sub-articles is deleted when it has no own sources (slug stays free) or becomes an ordinary article. An overview proposal under a redirected or retired slug is dropped instead of parenting the children under the redirect target. An overview takes the parent most of its children have, none on a tie. The consolidate prompt carries the no-concrete-names rule for titles and slugs. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>