{"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-m0lqun5m","versions":[{"created_at":"2026-06-11T00:14:58Z","element_count":84,"note":"5軸GA polish 57->98 by M5 (autonomous)","saved_by":"mcp","sha256":"67415bb82abd5b033f5f333f6c57f20bfa0dd341182e01ca685ebad7d49c94ce","version":13},{"created_at":"2026-06-10T23:10:11Z","element_count":50,"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":"c7c1389d7a10eb8c9e19a7cb12fda2124f620fcfaa71f733c22cdb3818c76661","version":7}]}