{"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-yrci9wh4","versions":[{"created_at":"2026-06-10T22:52:26Z","element_count":63,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy81784771→quote22959831 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"9c3b6a23ac27e5237b19f12f4913e73b9fd5b1de1ebb49cd638a30bee3f78c64","version":21},{"created_at":"2026-06-10T13:32:08Z","element_count":63,"note":"backfill: 延床=居室床スラブ実面積106.2㎡(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":"df23471fc7c24f31ae28a3d51202a83ad4d6e2686b8d8faddb6b5b6aae8dee12","version":7},{"created_at":"2026-06-10T12:16:05Z","element_count":84,"note":"5軸GA polish 54->98 by M5 (autonomous)","saved_by":"mcp","sha256":"9c277612def0a224e66309ec0a77e90d5f3121b09fc7c9bd258b63eaff9a356b","version":3}]}