{"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-fe8daknx","versions":[{"created_at":"2026-06-10T23:39:52Z","element_count":84,"note":"5軸GA polish 50->98 by M5 (autonomous)","saved_by":"mcp","sha256":"d160dd33d4f3fa0887407293bbb48f825ab9e7c5ff059b41a514dddc5edb888d","version":11},{"created_at":"2026-06-10T23:09:12Z","element_count":54,"note":"legacy fix: rooms設備語除去 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"0675a9e3c6b6d4be25c1621660bd4ed20c8d71bb109ed2709517c91f21a150ff","version":7}]}