{"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-house-n25g4d0b","versions":[{"created_at":"2026-06-10T23:23:57Z","element_count":84,"note":"5軸GA polish 50->98 by M5 (autonomous)","saved_by":"mcp","sha256":"68fdf85cd863cc3cca806c5d1d4c2c071903e0f2ca28aeb15ec45ae1f49ab28f","version":10},{"created_at":"2026-06-10T23:08:02Z","element_count":54,"note":"legacy fix: rooms設備語除去 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"ea78941ff2ba9a4e6ac048af5499d853f91601f44cd165462c08e53d06d97fcb","version":7}]}