{"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-gank5jvz","versions":[{"created_at":"2026-06-10T22:52:40Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy90050184→quote20693313 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"f2bcc700d9efbb925121ced53d44d29cf799abbfe6b07e35370e5d39ebcbb4a8","version":15},{"created_at":"2026-06-10T15:03:45Z","element_count":90,"note":"5軸GA polish 54->98 by M5 (autonomous)","saved_by":"mcp","sha256":"72e5afd412397850022bc5043eaa7468ee4ba837da56a4b0f08c05855abda1a1","version":7}]}