Under the hood
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A new "recap fold" message type appears in transcripts, styled like other non-animated summary messages
What
Claude Code's transcript renderer now supports a new message kind called "recap_fold", shown using a new RecapFoldMessage component. It's treated the same way as existing speaker_label/work_segment messages for metadata headers and animation: it never animates in and never appears as a top-level metadata message.
Why
This adds a new way for Claude Code to fold a recap or summary into the transcript display, presented consistently with similar existing message types.
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The writer flagged doubt
What content triggers a recap_fold message or what it displays isn't stated.