{"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-c1jir6yb","versions":[{"created_at":"2026-06-10T22:59:30Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy68009927→quote21571277 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"fb2d3b6019905aa1c292801713a96924641d9915016ebaa2ef97f48da6f7578b","version":26},{"created_at":"2026-06-10T13:09:56Z","element_count":66,"note":"backfill: 延床=居室床スラブ実面積93.5㎡(基礎/屋外/ロフト除外)。設備数量/コスト過大の是正","saved_by":"mcp","sha256":"0be3099094ba0531a55ead00b3de4c9ff97e00d82877fcbfc2d49a2e8963e71c","version":11},{"created_at":"2026-06-10T07:59:20Z","element_count":84,"note":"5軸GA polish 61->98 by M5 (autonomous)","saved_by":"mcp","sha256":"95570746f1b49cfc180f127e37daed4e1702100474d337a3c3adbf9c41d337c8","version":2}]}