{"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-orhsal76","versions":[{"created_at":"2026-06-10T22:52:32Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy90050184→quote20905453 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"63c083bf9e4295384257f09daa83a865bfb056f5d51d2bc8d3600beabdfce1c8","version":20},{"created_at":"2026-06-10T13:44:03Z","element_count":66,"note":"backfill: 延床=居室床スラブ実面積90.0㎡(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":"c411f5d146d827e9e522ba63f4cbe99e564ea11318eda155d8dba5cf31f42168","version":7},{"created_at":"2026-06-10T13:05:52Z","element_count":90,"note":"5軸GA polish 54->98 by M5 (autonomous)","saved_by":"mcp","sha256":"ace06949aa69a1a5ca0f9bc5cbbc19ecbc0625f31724311f234492b134fa0b6d","version":4}]}