{"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-qin9q68d","versions":[{"created_at":"2026-06-10T22:52:34Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy68153976→quote19530312 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"0eff52440c9c4d69e2924049e28b7b50b5a410083ef1ad57a42f7d970fffb2e1","version":19},{"created_at":"2026-06-10T13:56:48Z","element_count":84,"note":"5軸GA polish 62->98 by M5 (autonomous)","saved_by":"mcp","sha256":"08ffeee1491ff91b3faaa8a6f9e163e57caa08b241e8b1727b95d231593f5a6c","version":6},{"created_at":"2026-06-10T13:45:30Z","element_count":50,"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":"85bcf7ed901f4d8505b6de22343206130aa9ecc57013ec4f8445d59a65cd89e6","version":5}]}