{"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-4k3g434f","versions":[{"created_at":"2026-06-10T22:52:05Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy85444799→quote18890067 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"3674a29619c599ea6cb836e6ab0f19aef254af80512a003c10bf8c9913cee9ba","version":26},{"created_at":"2026-06-10T13:12:15Z","element_count":77,"note":"backfill: 延床=居室床スラブ実面積74.1㎡(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":"4586314634af48af1b4417fdd8b8c46463a4edb85dc6485214051e718147e5bf","version":11},{"created_at":"2026-06-10T08:32:33Z","element_count":72,"note":"5軸GA polish 60->97 by M5 (autonomous)","saved_by":"mcp","sha256":"6feef45a1341f7b2dde231fe69faca2a125bee6e801071df2ffce768ddc93be3","version":3}]}