{"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-thevalehouse-yptp2txa","versions":[{"created_at":"2026-07-20T09:54:37Z","element_count":90,"note":"5軸GA polish 48->98 by M5 (autonomous)","saved_by":"mcp","sha256":"a7c6f8da8105506f6e69755235bcae9a374f0b33a95847a766e8e0a8855b2196","version":3},{"created_at":"2026-07-20T09:47:07Z","element_count":109,"note":"loop3: 設計時延床 95.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"a92d9071602b9026111293253ce62bc6301edf56e0dbcc85a504136d98cb1170","version":2},{"created_at":"2026-07-20T09:47:07Z","element_count":109,"note":"言葉から生成: LDK+main bedroom+2 kids rooms+bathroom+storage","saved_by":"mcp:create","sha256":"","version":1}]}