{"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-sbs5tevk","versions":[{"created_at":"2026-06-17T06:13:45Z","element_count":73,"note":"5軸GA polish 42->92 by M5 (autonomous)","saved_by":"mcp","sha256":"71f409b9f389724d4fa265468e75f32352c473bfde2d8169b11559ebe4b84d48","version":3},{"created_at":"2026-06-17T06:09:50Z","element_count":86,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"335f5368f9039214513bbb6f1a44c460f0079fa61ee1a7e279076065ed76d37a","version":2},{"created_at":"2026-06-17T06:09:49Z","element_count":86,"note":"言葉から生成: LDK+主寝室+子供室2+浴室+収納","saved_by":"mcp:create","sha256":"","version":1}]}