同じ handoff-outbox ディレクトリ内で、handoff-summary-draft.txt を handoff-summary.txt に名前変更するコマンドはどれですか？
handoff-outbox
handoff-summary-draft.txt
handoff-summary.txt
mv handoff-outbox handoff-summary.txt
mv handoff-outbox/handoff-summary-draft.txt handoff-outbox/handoff-summary.txt
mv handoff-outbox/handoff-summary.txt handoff-outbox/handoff-summary-draft.txt
rm handoff-outbox/handoff-summary-draft.txt