{"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-thewillowhouse-lpa9mn0t","versions":[{"created_at":"2026-07-08T19:41:16Z","element_count":90,"note":"5軸GA polish 45->96 by M5 (autonomous)","saved_by":"mcp","sha256":"a53104e4e3dce0811b1dbfefe84544bc334ceb2b646f4bc0eb6158148c0d5962","version":3},{"created_at":"2026-07-08T19:35:00Z","element_count":85,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"69c21722f57ffba7d6cb80124eaf2b35fb87c86cb06f3898075e5d4a47f34f19","version":2},{"created_at":"2026-07-08T19:35:00Z","element_count":85,"note":"言葉から生成: LDK+main bedroom+2 kids rooms+bathroom+storage","saved_by":"mcp:create","sha256":"","version":1}]}