{"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-ex15s7sv","versions":[{"created_at":"2026-06-10T22:51:08Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy81611913→quote19740953 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"21bd1ddcc7ab508370406b98636724aeb69411e5567ad4033c05d0a394a89e7f","version":25},{"created_at":"2026-06-10T13:09:28Z","element_count":77,"note":"backfill: 延床=居室床スラブ実面積77.0㎡(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":"d0e7500d0db456f72797132275e86e2fbaba136fc20c40270faa7b42474b19e4","version":11},{"created_at":"2026-06-10T07:59:54Z","element_count":83,"note":"5軸GA polish 54->98 by M5 (autonomous)","saved_by":"mcp","sha256":"0b8c98911e1314f72bd146c54cb31d0f8116af7b40d237de644cb60190f99fca","version":2}]}