{"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-bermondseyplacebunga-irkdl649","versions":[{"created_at":"2026-06-30T04:02:35Z","element_count":72,"note":"5軸GA polish 39->90 by M5 (autonomous)","saved_by":"mcp","sha256":"b2f8165220f8cae4c1ebdebddefeef59242e194bdafeed89c007c664462e47a9","version":3},{"created_at":"2026-06-30T03:50:32Z","element_count":85,"note":"loop3: 設計時延床 60.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"55d5fe8cefe541fa6e65494d87568b2ff7d9555fb01b56c2006805227d656aa3","version":2},{"created_at":"2026-06-30T03:50:32Z","element_count":85,"note":"言葉から生成: LDK+main bedroom+2 kids rooms+bathroom+storage","saved_by":"mcp:create","sha256":"","version":1}]}