{"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-7ffwrjnd","versions":[{"created_at":"2026-07-13T09:54:02Z","element_count":82,"note":"5軸GA polish 39->93 by M5 (autonomous)","saved_by":"mcp","sha256":"e234a12068d7ab05f2c8cfb6a7d51bfc5596060a37f2879e34db87b5cc301354","version":3},{"created_at":"2026-07-13T09:39:43Z","element_count":101,"note":"loop3: 設計時延床 70.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"a5896d18f8bfcf90698fe487e6712250d34ef6a68187ce2e76421bb7ca58d1bf","version":2},{"created_at":"2026-07-13T09:39:43Z","element_count":101,"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}]}