{"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-evmmbjin","versions":[{"created_at":"2026-06-10T23:07:12Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy102533759→quote19396944 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"c1d5d880dbb476f8a0b3d45a79b8383dd8a0b5c2bb77e4d9143e1d0cc21d64b6","version":9},{"created_at":"2026-06-10T22:51:06Z","element_count":73,"note":"5軸GA polish 60->97 by M5 (autonomous)","saved_by":"mcp","sha256":"4ba33fc9075ef64f38e33f12d366059db6d8a0b3ff0bc4bd878004c2e01bde23","version":7}]}