{"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-9nkz6diq","versions":[{"created_at":"2026-06-10T23:35:25Z","element_count":63,"note":"legacy fix(polish再汚染): 平屋floors2→1 / jpy70239456→quote22834440 (旧polishコード再書き込みの再是正・rollback=m5:legacy_fix_rollback.jsonl phase=polish_recontam)","saved_by":"mcp","sha256":"79ce3364647586a27921f9020821db4093b3f598c91e3019301c216909fc1fe0","version":11},{"created_at":"2026-06-10T23:08:26Z","element_count":91,"note":"5軸GA polish 54->98 by M5 (autonomous)","saved_by":"mcp","sha256":"ea361c48fff920053d1ca39efcf8b28f7f554c0114af6372bb3ae9071df261ac","version":8},{"created_at":"2026-06-10T23:07:32Z","element_count":44,"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":"be66cc24088fadb7e87200e96d26c8e2b7e5805e68d0db91dc3721cfdf04a29b","version":7}]}