{"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-e782oaj5","versions":[{"created_at":"2026-06-10T22:58:52Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy64133856→quote19954947 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"4626e965f8e28d55e4a785327d4f3fc3a3db062944a412d1b8f6f9b5e0226cdf","version":9},{"created_at":"2026-06-10T20:22:40Z","element_count":73,"note":"5軸GA polish 58->93 by M5 (autonomous)","saved_by":"mcp","sha256":"bc8443827348c11ab477d506ba9249b895137497af0a64f199f2c98c0a6c1749","version":2}]}