{"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-v7o7yv5g","versions":[{"created_at":"2026-06-10T22:52:06Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy70239456→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":"001f97b508225a0f061ad21a3e8948f5fa4ab98302e24a54005d9c9eb4cff1d0","version":27},{"created_at":"2026-06-10T21:59:44Z","element_count":54,"note":"revert: houki rescan NG -> restore pre-polish elements (M5 2026-06-11)","saved_by":"mcp","sha256":"e952f952523a05edc40c16791df5dd726994a428ac92efc24d02b62451f61ba1","version":21},{"created_at":"2026-06-10T13:12:37Z","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":11},{"created_at":"2026-06-10T08:48:40Z","element_count":91,"note":"5軸GA polish 56->98 by M5 (autonomous)","saved_by":"mcp","sha256":"7a7d66ccb9c7226ae547acbf655adb9c2fb359fe5af92b1158b74f3c1e7a8519","version":3}]}