{"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-ocxv02r8","versions":[{"created_at":"2026-06-10T22:52:08Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy84109586→quote25805307 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"bbac72de0be7f81114650603ed3a21ff4d2f4318c019e5ab2d858e5beae1d99d","version":25},{"created_at":"2026-06-10T13:13:32Z","element_count":66,"note":"backfill: 延床=居室床スラブ実面積118.8㎡(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":"6444b7ef9f3d7f1c6e441912d9169ac954936879e14e8de19532bcfbeea33f35","version":10},{"created_at":"2026-06-10T09:05:18Z","element_count":90,"note":"5軸GA polish 56->98 by M5 (autonomous)","saved_by":"mcp","sha256":"a5de70a9d2afa8e0eb069ffb85ed477271e3fb43536643c71a2b1e069afafec1","version":2}]}