{"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-2hphhn7i","versions":[{"created_at":"2026-06-17T06:03:08Z","element_count":69,"note":"5軸GA polish 43->95 by M5 (autonomous)","saved_by":"mcp","sha256":"2c63b91a979b2dac1a4d511b345a7cbb766445423337df02e5ef3fbb5e8cec2e","version":3},{"created_at":"2026-06-17T05:51:39Z","element_count":126,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"4d2238091970219b8625038f2624311a66759882ddc008b5f0be1c8278bdc3ab","version":2},{"created_at":"2026-06-17T05:51:38Z","element_count":126,"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}]}