{"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-kd301dz0","versions":[{"created_at":"2026-06-10T22:56:03Z","element_count":63,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy80278800→quote22758819 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"e44e2e15d5ec4148404f08c3b3e7f5e2f1639df02d1c2d5c5a1399fd3adbbb16","version":10},{"created_at":"2026-06-10T18:29:57Z","element_count":72,"note":"5軸GA polish 56->96 by M5 (autonomous)","saved_by":"mcp","sha256":"053a0da5abf79982d1e8a7f9ffbfc54a854dc2875ea9f17843c77a3f44126aaf","version":3}]}