{"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-31uopbdt","versions":[{"created_at":"2026-07-06T02:47:22Z","element_count":71,"note":"5軸GA polish 44->93 by M5 (autonomous)","saved_by":"mcp","sha256":"3ff317c31cdcd92d29cee56f92d22d2d5dfc3e9fe27de4368ab6e4cb15a902d7","version":3},{"created_at":"2026-07-06T02:42:32Z","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":"fc15f1bbd7d49b74d148ebb8087936155314c4c043899abaa9eb0ad210bfc9e4","version":2},{"created_at":"2026-07-06T02:42:31Z","element_count":86,"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}]}