A.16.0:13.1 - Multi-route state before fork

A routed operator cue may first keep intervention and inquiry routes live for one selected episteme edition in one RoutedCueSet. That is still a multi-route state. A lineage fork exists when independently identified distinct successor epistemes and the actual historical facts satisfy the selected fork predicate. Both successors may still be unpublished. Conversely, publishing the same edition twice creates two publication claims, not a fork.