{"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-29uswdtr","versions":[{"created_at":"2026-06-11T00:15:09Z","element_count":90,"note":"5軸GA polish 56->98 by M5 (autonomous)","saved_by":"mcp","sha256":"2eff764a8e41185d7419df8724888d3b3de68670f78ca54ac45c017239519349","version":13},{"created_at":"2026-06-10T23:10:39Z","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":"5426cc32adde8a9aed01a9ad512f945184342da02e3ccbe2a5b6b4dc584b6c4c","version":7}]}