{"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-810ahmk1","versions":[{"created_at":"2026-06-11T00:14:44Z","element_count":73,"note":"5軸GA polish 60->97 by M5 (autonomous)","saved_by":"mcp","sha256":"0288680a176c8e7425a96d9281ef2068968b69b1bfc06d35a72cdfacb1cd3712","version":13},{"created_at":"2026-06-10T23:09:59Z","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":"171dcab9ada06cd02ca5e2038a7a5c6902cc8fe45d526e7e3fa049ea664a5933","version":7}]}