{"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-637rqz70","versions":[{"created_at":"2026-06-10T22:59:31Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy73663920→quote21081401 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"2cf390fbde64dda700aed61b4cca6e861a654c72f3f5c0ea0728d33bedfdd65e","version":9},{"created_at":"2026-06-10T20:38:19Z","element_count":72,"note":"5軸GA polish 60->95 by M5 (autonomous)","saved_by":"mcp","sha256":"1237e82ba0fca8a3bc32fdd48b7d996c2d5ad53ea443d5c4748d28bdda81db84","version":2}]}