Timestamp rendered after the label ("·
OptionalCloseWhy the PRECEDING leg closed (review chains only) — rendered as a small chip.
Font Awesome icon class rendered before the label (e.g. fa-solid fa-phone).
The divider's label (e.g. "Resumed live session", "Session leg").
A SESSION-BOUNDARY divider in the unified thread — a subtle, token-styled rule marking where one session leg ends and another begins. Two producers:
BuildReviewThreadItemsover alastSessionIdchain): "Session leg · started