{"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-nuyud2ll","versions":[{"created_at":"2026-06-10T23:07:05Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy87379776→quote25116303 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"93d863fef07a868ce76815cca93634061f72af60cde1e7e00e352b27c63e4378","version":9},{"created_at":"2026-06-10T22:52:03Z","element_count":85,"note":"5軸GA polish 60->98 by M5 (autonomous)","saved_by":"mcp","sha256":"7fe96dab253342ebc5cc35a60d5553bb068fcbbc505f9b6b272abde1acb2e4f6","version":8}]}