{"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-wcue2irf","versions":[{"created_at":"2026-06-10T23:01:16Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy68153976→quote22161645 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"9a88aec878974e919491f975dd2550ce76e16130977038ce5e71181c68bf35b2","version":9},{"created_at":"2026-06-10T22:00:54Z","element_count":83,"note":"5軸GA polish 61->98 by M5 (autonomous)","saved_by":"mcp","sha256":"db8f4039fd9edb4591c352f7606c4cec36c107dbd43f39013c92c492af30da34","version":3}]}