{"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-bghkin1u","versions":[{"created_at":"2026-06-10T22:52:26Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy85444799→quote18790124 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"77d43758a355a9e3e0c1663f6c87bae70f2dddeaf10d4e9f37ed3444ddae9a8e","version":22},{"created_at":"2026-06-10T13:31:38Z","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":"d644fde2885decc44afb827cdaebdf59663253f1c60374de245be308adde0d1f","version":8},{"created_at":"2026-06-10T12:00:00Z","element_count":73,"note":"5軸GA polish 60->97 by M5 (autonomous)","saved_by":"mcp","sha256":"7e6c0a885eb6c09f9de298bfb8b90ae0891bbbb5af2ae120327a39680ca94176","version":3}]}