{"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-ghqrvu9z","versions":[{"created_at":"2026-06-10T22:52:24Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy80278800→quote21362937 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"807ad1db25561ace47f03207dc9285a65b24c48859c7ef1fb6e6e03bdea5fe26","version":23},{"created_at":"2026-06-10T13:30:13Z","element_count":77,"note":"backfill: 延床=居室床スラブ実面積87.5㎡(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":"98a194aeaf498b958603c17fa0719e363361d8ed11502fa338bd946d1765e24c","version":9},{"created_at":"2026-06-10T11:43:34Z","element_count":70,"note":"5軸GA polish 61->96 by M5 (autonomous)","saved_by":"mcp","sha256":"9b0a0d0814c431ca102d0b23135519e6cb5d793a2a00022ad5aba03993372afa","version":4}]}