{"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-5otsnz12","versions":[{"created_at":"2026-06-26T19:44:24Z","element_count":89,"note":"5軸GA polish 41->94 by M5 (autonomous)","saved_by":"mcp","sha256":"7d95dfddebc1636242f8a86b3f82ce678279224d74d0f3ca505ff3c12c44236c","version":3},{"created_at":"2026-06-26T19:32:28Z","element_count":101,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"2fab210c6641b7cbdb4cb80919a63883e400762e2f524f0b393ac00447ab4a2b","version":2},{"created_at":"2026-06-26T19:32:28Z","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}]}