{"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-zxegsmn9","versions":[{"created_at":"2026-06-10T22:52:25Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy96334560→quote22225213 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"955d64ba11e8c80eb787985ad4d01dad973bcac0b977a0dafd981a356578ef5b","version":23},{"created_at":"2026-06-10T13:30:55Z","element_count":85,"note":"backfill: 延床=居室床スラブ実面積92.5㎡(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":"02f39912cfb5b903e13f0f0745e722a954c04285e8435a358e7affc63c650f91","version":9},{"created_at":"2026-06-10T11:59:59Z","element_count":71,"note":"5軸GA polish 54->96 by M5 (autonomous)","saved_by":"mcp","sha256":"033e8e211250ac3a48d8e76df91ed0dc961965d11681be18ceaa64abf1d46973","version":4}]}