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## Why Returning from a `/side` conversation restores the parent thread by replaying its snapshot into the TUI. For very long parent threads, replaying every transcript row can take noticeable time even though most rows immediately scroll out of terminal history. ## What Changed - Buffer thread-switch replay for parent restores when terminal resize reflow is enabled. - Reuse the existing resize-reflow tail renderer so only the retained transcript tail is written back to scrollback when a row cap is configured.