{"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-6ghw0jsi","versions":[{"created_at":"2026-06-10T23:35:22Z","element_count":66,"note":"legacy fix(polish再汚染): 平屋floors2→1 / jpy90050184→quote21228016 (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":"fa0f4914e045dd8ecc4a024c41737a272bc739e8d1fbb0f06cc6126edc6280e2","version":11},{"created_at":"2026-06-10T23:07:58Z","element_count":89,"note":"5軸GA polish 60->98 by M5 (autonomous)","saved_by":"mcp","sha256":"783cbea53569cfe9ae8944f24b71a3b50e7f2759e6d753f1093c04d68d64880d","version":8},{"created_at":"2026-06-10T23:07:34Z","element_count":47,"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":"183581988ec6909749e7c88f0098dc75cb13761b7db3f10c397310fc67fe7ade","version":7}]}