{"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-6md4uez7","versions":[{"created_at":"2026-07-15T01:57:27Z","element_count":83,"note":"5軸GA polish 41->94 by M5 (autonomous)","saved_by":"mcp","sha256":"63ceb591e149e556775c6192059d037af33cc805012e3275a889230a0620fe0c","version":3},{"created_at":"2026-07-15T01:53:46Z","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":"2fa5941b753869660950cfa4fa7b2ad7fa2acea7667ed0210d0a9016fcd70952","version":2},{"created_at":"2026-07-15T01:53:45Z","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}]}