{"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-1yufhekl","versions":[{"created_at":"2026-06-16T06:11:59Z","element_count":84,"note":"5軸GA polish 44->95 by M5 (autonomous)","saved_by":"mcp","sha256":"4e1fc93c7baf2079ce1f929001253bcb0d38536395aad9e22c8bbdaad04eaba7","version":3},{"created_at":"2026-06-16T06:04:30Z","element_count":119,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"1e80d89ef891ffccfc88a0f3e747e93c63c41db93e892a18c4322ae8015e723d","version":2},{"created_at":"2026-06-16T06:04:29Z","element_count":119,"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}]}