{"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-11douvmt","versions":[{"created_at":"2026-06-10T23:39:41Z","element_count":89,"note":"5軸GA polish 50->98 by M5 (autonomous)","saved_by":"mcp","sha256":"d357863e3b0c33900c850313543ecadb39e9f844802f8c651c2706f14b30d074","version":11},{"created_at":"2026-06-10T23:09:14Z","element_count":54,"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":"51e495b23025ac40013d0432365603936e1bb5df2dbdfda536d95fa0591fadc6","version":7}]}