{"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-ot38gnj1","versions":[{"created_at":"2026-06-10T22:56:45Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy96334560→quote21081401 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"672481ff67d03541326b02f626d13be9769bbaa6fa5b6d7bb362fbcbe1b3b3a5","version":10},{"created_at":"2026-06-10T19:02:33Z","element_count":72,"note":"5軸GA polish 61->96 by M5 (autonomous)","saved_by":"mcp","sha256":"b8f396a016bf79932acefdebdb30f21ed447e0d83e31db5f49063e5a50c1888a","version":3}]}