Resume dialog can offer to continue from a summary with /compact

What

When you return to an idle session (one ongoing conversation) and resuming it in full would use a lot of your quota, Claude Code shows a dialog. Before, it offered only resume, start a new conversation, or dismiss. It can now also offer "compact", which runs /compact to summarize the conversation and carries on from that summary instead of a full resume.

• resumeFromSummary: the new option. It is offered only when the dialog opens on resume, /compact is available, Claude has not ended the conversation, and the tengu_cold_resume_quota_action setting is on. Nothing has been read about that setting yet.
• offersSummary: set on the dialog when the choice is offered. The dialog's answers are now resume, new_conversation, dismiss, cancelled and "compact".
• When the compact choice does not work, the dialog reports compact_unavailable, compact_failed, compact_queued or compact_not_applied.

Why

If you come back to a session after a long gap, you may get a cheaper way to continue it. Claude then works from a summary, so it may have less of the older details.