{"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-s8zfoh12","versions":[{"created_at":"2026-06-11T00:14:40Z","element_count":84,"note":"5軸GA polish 61->97 by M5 (autonomous)","saved_by":"mcp","sha256":"1b174afd052ca2dd67a25fe6e1d1d5a142671c1b2664c55264e3db991c4f0e28","version":13},{"created_at":"2026-06-10T23:09:35Z","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":"0290f5cd8b8d5e78a6f282d86e8605767e674066879db6ead8a7ec709a32a9da","version":7}]}