A reply that answers no brief, or briefs of two conversations, was read by nothing and re-paged on every Persona read. It is now a route in the public conversation marked as a pointer: the line carries the reply id and a fixed note, never its text, and the Persona reads the reply by id. Heard, it is resolved like any reply.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>