{"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-bkqjwr66","versions":[{"created_at":"2026-07-13T10:09:58Z","element_count":72,"note":"5軸GA polish 42->93 by M5 (autonomous)","saved_by":"mcp","sha256":"40f6ec5e582e4348202e829f0de1961c8dcd6275aba7f91d84c854c4073ff7bd","version":3},{"created_at":"2026-07-13T09:53:22Z","element_count":119,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"af006d5f53b93bdd466983668d05e8618150a62a3432aaa308515fd901f771ed","version":2},{"created_at":"2026-07-13T09:53:22Z","element_count":119,"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}]}