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Completed diff-less writes (write_file creates) were invisible in the transcript. They now appear in the per-turn files card with a "new" tag (preview on click, system-app open on hover), a collapsible per-session artifacts fold sits above the usage footer, and the chat header shows the session's workspace path ahead of the title. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>