{"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-5ntr97wh","versions":[{"created_at":"2026-06-10T23:00:58Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy90050184→quote19615588 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"6b0625ce5ad63acff4a90c1ea26157bc2ae0b50165c8e60e49616b1ee4cb9af3","version":9},{"created_at":"2026-06-10T21:44:06Z","element_count":91,"note":"5軸GA polish 60->98 by M5 (autonomous)","saved_by":"mcp","sha256":"e91bd842572744c649c0b68e79e694b9af2a3e9ef243bcb7cefe8ecf61d57c3f","version":3}]}