{"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-stjohnsgrovehouse-6tbhsbd3","versions":[{"created_at":"2026-07-13T11:24:51Z","element_count":70,"note":"5軸GA polish 44->93 by M5 (autonomous)","saved_by":"mcp","sha256":"68626d5c17af56f479dff5781d1e81b0e04edf53ba18bb07e5afaab8650c982c","version":3},{"created_at":"2026-07-13T11:21:03Z","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":"47407f33c3d895ea77ef20cc1c6eaf7c22b8239dc3c5b86039bfb0dafec0383e","version":2},{"created_at":"2026-07-13T11:21:02Z","element_count":119,"note":"言葉から生成: LDK+main bedroom+2 kids rooms+bathroom+storage","saved_by":"mcp:create","sha256":"","version":1}]}