{"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-gmhnc163","versions":[{"created_at":"2026-06-10T22:52:37Z","element_count":65,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy87379776→quote21590573 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"d8748f78efdcf0ad4886c15d4348cb56ce7c6d921fcd9a78f84ad8c45b6e0396","version":17},{"created_at":"2026-06-10T14:29:40Z","element_count":85,"note":"5軸GA polish 60->98 by M5 (autonomous)","saved_by":"mcp","sha256":"7fe96dab253342ebc5cc35a60d5553bb068fcbbc505f9b6b272abde1acb2e4f6","version":7}]}