{"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-mpekvhe2","versions":[{"created_at":"2026-07-06T06:21:26Z","element_count":90,"note":"5軸GA polish 43->97 by M5 (autonomous)","saved_by":"mcp","sha256":"25227f7c7d3f91e148ce9ed641fb9d7588cb453e5ae7e160f5b4d77b7f599cae","version":3},{"created_at":"2026-07-06T06:15:16Z","element_count":126,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"69686ced988059567841ed2aab11b9c3c6eab01d8fa418e9e65cf5cdf1eb4d9e","version":2},{"created_at":"2026-07-06T06:15:16Z","element_count":126,"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}]}