{"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-l1ruqual","versions":[{"created_at":"2026-06-28T17:41:08Z","element_count":71,"note":"5軸GA polish 43->93 by M5 (autonomous)","saved_by":"mcp","sha256":"96d35e73043fa70248c63a98d9ebc7b33324077936c83e64c54d76122e82ae77","version":3},{"created_at":"2026-06-28T17:38:42Z","element_count":85,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"b9f163a41cbde5cc985f270d00a7112afe679f0bd4d695f9c4e801cad8ee23b3","version":2},{"created_at":"2026-06-28T17:38:42Z","element_count":85,"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}]}