{"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-bts1q8se","versions":[{"created_at":"2026-06-10T22:52:49Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy78252998→quote23345656 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"3d3e7be4e4c6d2db4ad660534ec9dafba2b0f7425180f2754e587b83c3bd7988","version":10},{"created_at":"2026-06-10T16:38:55Z","element_count":89,"note":"5軸GA polish 60->97 by M5 (autonomous)","saved_by":"mcp","sha256":"b8921d371c7df61bc18742e449b9da93d1fe627c2c614e63da6e60eac1200c78","version":2}]}