{"note":"bim_versions 導入後の保存のみ記録 (それ以前は bim_canonical 上書きで履歴なし)","ok":true,"slug":"u-teshikaga-hira-2-2s500n12","versions":[{"created_at":"2026-10-22T22:36:13Z","element_count":138,"note":"言葉から生成: teshikaga-hira-2","saved_by":"mcp:create","sha256":"","version":1}]}