{"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-riverviewbungalow-kx10uaip","versions":[{"created_at":"2026-06-29T11:24:11Z","element_count":84,"note":"5軸GA polish 44->98 by M5 (autonomous)","saved_by":"mcp","sha256":"5eb42b5352b8a93a8bb64f1a27e1f8dec78bf695fcb70e91a028ca60d396859c","version":3},{"created_at":"2026-06-29T11:21:36Z","element_count":105,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"8b55e6443c36b36d0fd0318d3f391658a591a542946cbf422ed25ab83a750016","version":2},{"created_at":"2026-06-29T11:21:35Z","element_count":105,"note":"言葉から生成: LDK+main bedroom+2 kids rooms+bathroom+storage","saved_by":"mcp:create","sha256":"","version":1}]}