{"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-s01unkst","versions":[{"created_at":"2026-06-10T22:52:31Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy85444799→quote19914784 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"fa894a648cd0cb9099c3e81c97ec76cdfdf359e36912fb3d7f44167bbca539c7","version":20},{"created_at":"2026-06-10T13:34:47Z","element_count":85,"note":"backfill: 延床=居室床スラブ実面積78.3㎡(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":"847b1331e0453538f253e340c3db057855f5639102cf0e5794bf300206909037","version":7},{"created_at":"2026-06-10T12:48:48Z","element_count":71,"note":"5軸GA polish 56->97 by M5 (autonomous)","saved_by":"mcp","sha256":"fce86f11e5e833ba92d132f8b1e75dfa13c96536e88e8ae1575f4687ba7e4af5","version":4}]}