{"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-qkqq6d3y","versions":[{"created_at":"2026-06-10T22:52:36Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy72844800→quote22119104 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"73184b3927a72045010db59bd2e61cd96d5840b10710a3f5646ea86b65806bd3","version":18},{"created_at":"2026-06-10T14:12:38Z","element_count":69,"note":"5軸GA polish 69->95 by M5 (autonomous)","saved_by":"mcp","sha256":"5087da6e995c2f174a7343f1dcf6b05bc728ddbcbf8d5492556470b6254ad1c4","version":7},{"created_at":"2026-06-10T13:47:05Z","element_count":47,"note":"backfill: 延床=居室床スラブ実面積90.0㎡(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":"e2ade2c34bec96f55afbe1ea45f43688afcc0860c0ce16aa001a6fbed6412316","version":4}]}