で待機中のDurable Functionを特定で きる // Slack の承認ボタンにcallbackId を埋め込む elements: [ { type: "button", text: { type: "plain_text", text: " 承認して投稿" }, style: "primary", action_id: "approve", value: JSON.stringify({ callbackId, approved: true }), }, { type: "button", text: { type: "plain_text", text: " 却下" }, style: "danger", action_id: "reject", value: JSON.stringify({ callbackId, approved: false }), }, ], callbackIdの受け渡しが肝 35