{"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-flemishmeadowhouse-b0mjipg9","versions":[{"created_at":"2026-07-13T11:37:22Z","element_count":89,"note":"5軸GA polish 44->98 by M5 (autonomous)","saved_by":"mcp","sha256":"40a9c7fc901797effa742d92973dd7fb1932a4eb5d2d2f027d564aa4b3e28131","version":3},{"created_at":"2026-07-13T11:27:01Z","element_count":134,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"5bf92d438c08cca4fb012db26533a998e0eef1902d142f5362f56a0432f5c967","version":2},{"created_at":"2026-07-13T11:27:01Z","element_count":134,"note":"言葉から生成: LDK+main bedroom+2 kids rooms+bathroom+storage","saved_by":"mcp:create","sha256":"","version":1}]}