{"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-9dyswosj","versions":[{"created_at":"2026-06-10T23:23:56Z","element_count":84,"note":"5軸GA polish 54->98 by M5 (autonomous)","saved_by":"mcp","sha256":"f710d4009a6831a81df906d3e33314ae25616df19da92bf97da21dc33889456d","version":10},{"created_at":"2026-06-10T23:08:01Z","element_count":47,"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":"94539eb87c1df8b46470f041df132602211025a799c0338cf900dd6854686483","version":7}]}