{"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-npp9moyw","versions":[{"created_at":"2026-06-10T22:52:38Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy102533759→quote19293329 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"6186dcbb20d15d94f9eb8241b1ed7ad9894cdcaf55a9b149c0f6043989cfaa26","version":17},{"created_at":"2026-06-10T14:29:51Z","element_count":72,"note":"5軸GA polish 56->96 by M5 (autonomous)","saved_by":"mcp","sha256":"94181841b019d1fde0e9e4ee9a172de65cc106c1a7a17fa24aee6cff268be476","version":7}]}