{"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-18-ahxbhz8y","versions":[{"created_at":"2026-06-10T22:49:03Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy90050184→quote21338691 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"1ed6f1c6ac74bf1a125a544d1b26590572f2a56fbbb48d93e50bbf5ff83d53d3","version":26},{"created_at":"2026-06-10T13:06:42Z","element_count":66,"note":"backfill: 延床=居室床スラブ実面積93.9㎡(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":"169be67940299b76ad00b432901c20e4e952843d0d9d07b115cea3d7fb03f269","version":12},{"created_at":"2026-06-10T06:01:56Z","element_count":91,"note":"5軸GA polish 61->98 by M5 (autonomous)","saved_by":"mcp","sha256":"49668ff52ca6ef66092a255507e387fe3653106aa9dec5fbfefa5beae57c2931","version":2}]}