{"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-slzlxgis","versions":[{"created_at":"2026-06-10T23:23:56Z","element_count":83,"note":"5軸GA polish 54->98 by M5 (autonomous)","saved_by":"mcp","sha256":"3a43ae9f6519c21e83c8b755c119d51a23b6ff5c567a6d8e1a850822c2147912","version":10},{"created_at":"2026-06-10T23:07:48Z","element_count":50,"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":"c3d5a5241d3d95ecad369b51d18523fc24095fe560d764d701be2a25a17b5a63","version":7}]}