Fixed
- A rare internal delay no longer prints a diagnostic warning on top of the interactive UI
- A failed session-history load no longer leaves the timeline permanently empty: the failure was silently discarded, so the transcript stayed blank for the rest of the session with nothing logged. It is now retried, and reported in the transcript and the log if it still fails
- Resuming a long session no longer collapses the timeline's scroll range while history renders in the background: entries that had not finished rendering were published as if they did not exist, so the scrollbar and scroll position jumped until the background render caught up