{"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-house-jb8ze2ls","versions":[{"created_at":"2026-06-19T06:28:31Z","element_count":84,"note":"5軸GA polish 43->95 by M5 (autonomous)","saved_by":"mcp","sha256":"56d5da0a7b2184b85e731ad9e7081c6270f7880f51701f83dfae4a4bcecd14e8","version":3},{"created_at":"2026-06-19T06:19:31Z","element_count":87,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"fabcc7a0eb33fd34cc26f1da30c4530a4a3743e7b0920b33fe61a3f85794ad8f","version":2},{"created_at":"2026-06-19T06:19:29Z","element_count":87,"note":"言葉から生成: LDK+主寝室+子供室2+浴室+収納","saved_by":"mcp:create","sha256":"","version":1}]}