{"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-qh0krkcg","versions":[{"created_at":"2026-06-10T22:52:05Z","element_count":65,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy75041820→quote21571277 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"8eb20eada04542a329737c697b369ead5e7b1d017dc94b61895311778fa94556","version":26},{"created_at":"2026-06-10T13:12:07Z","element_count":65,"note":"backfill: 延床=居室床スラブ実面積93.5㎡(基礎/屋外/ロフト除外)。設備数量/コスト過大の是正","saved_by":"mcp","sha256":"1f0bf72c11be56a79d198e0831baac5b7560435adefddd8a12076ade7d8df6f5","version":11},{"created_at":"2026-06-10T08:32:15Z","element_count":89,"note":"5軸GA polish 60->98 by M5 (autonomous)","saved_by":"mcp","sha256":"01cbbcbd446523dee10005d0f12c9c10e1db9423ba3e07edf002bd3777c48705","version":3}]}