{"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-j7rdxap5","versions":[{"created_at":"2026-06-10T22:52:25Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy75041820→quote19531381 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"f215b70bf16c4ba1cbc15bf7e5e5b93aa54801c1858caa05a8ca8fa7b9fcc200","version":22},{"created_at":"2026-06-10T13:31:08Z","element_count":77,"note":"backfill: 延床=居室床スラブ実面積77.0㎡(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":"22afab92bdfc9941edbea7a460314cfa1a1bf6f3ce85556c5848180c19ac37ed","version":8},{"created_at":"2026-06-10T11:59:59Z","element_count":91,"note":"5軸GA polish 60->98 by M5 (autonomous)","saved_by":"mcp","sha256":"7bb4fd984acd840fd58cc56e44390fd30750db403aeb7f0ef5a4d32dfe43e2f5","version":3}]}