{"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-hellebecqseasidehous-4jz6o0fq","versions":[{"created_at":"2026-07-18T00:30:25Z","element_count":84,"note":"5軸GA polish 44->95 by M5 (autonomous)","saved_by":"mcp","sha256":"d1e447bd7ff22c14265bcf031168dec1cad80114aa55c2cdee408131981de9f0","version":3},{"created_at":"2026-07-18T00:09:26Z","element_count":86,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"659eea00c3728addc6969bffccabc66b709e30ed3478ddb867e5a3bcc5cf805b","version":2},{"created_at":"2026-07-18T00:09:26Z","element_count":86,"note":"言葉から生成: LDK+main bedroom+2 kids rooms+bathroom+storage","saved_by":"mcp:create","sha256":"","version":1}]}