Switcher and Project rows show a "New summary" marker, with text and an accessible label, when a task has a summary the user hasn't read. Selecting it opens the Transcript at that summary. Read state is per browser and per user, by event seq; a summary counts as read only when shown in a visible transcript or through "Mark seen", not by opening another tab or switching tasks. Task carries its latest summary seq so the marker survives reload without loading transcripts.