{"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-1rdfyawo","versions":[{"created_at":"2026-06-11T00:14:47Z","element_count":85,"note":"5軸GA polish 57->98 by M5 (autonomous)","saved_by":"mcp","sha256":"0b14613a71a040932bb1c2491c879a69bb8399caae92607e89a9077f3385123b","version":13},{"created_at":"2026-06-10T23:10:06Z","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":"0675a9e3c6b6d4be25c1621660bd4ed20c8d71bb109ed2709517c91f21a150ff","version":7}]}