{"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-rgofjuwx","versions":[{"created_at":"2026-06-11T00:31:36Z","element_count":85,"note":"5軸GA polish 63->98 by M5 (autonomous)","saved_by":"mcp","sha256":"3ed250f30da8835c14f865e066cbb91be694fcd7b0ab0df40e7b2b68ac625fd8","version":15},{"created_at":"2026-06-10T23:10:26Z","element_count":44,"note":"legacy fix: rooms設備語除去 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"351ed3db00f18c3d4479960bdc406ca1730cf8175f4a0f0513f6edcb3020ce09","version":7}]}