{"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-vju1ru42","versions":[{"created_at":"2026-06-10T23:23:55Z","element_count":90,"note":"5軸GA polish 50->98 by M5 (autonomous)","saved_by":"mcp","sha256":"ef1e1f47f4143d25c5843854690b02c9175eb3b8d1aeae65d23ede6fda23163d","version":10},{"created_at":"2026-06-10T23:07:51Z","element_count":43,"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":"ecc5fb42ea1011b402c75b4e510039381925e265f1ae26f71029d8ba2c754bf0","version":7}]}