{"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-3xdi8nu5","versions":[{"created_at":"2026-06-10T23:35:20Z","element_count":63,"note":"legacy fix(polish再汚染): 平屋floors2→1 / jpy72816480→quote20965218 (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":"f47c4dc95fb804e96eadb6a80d5afd2858c294a3ae52e8900db8675336e48c4d","version":12},{"created_at":"2026-06-10T23:08:13Z","element_count":84,"note":"5軸GA polish 55->98 by M5 (autonomous)","saved_by":"mcp","sha256":"c96517e7476733606559d854fd8feb0ce82caff41ff42fe55a65e6f41dbc95b7","version":9},{"created_at":"2026-06-10T23:07:21Z","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":"dfffb10fb050ad1b5ba1c780c8448b2ca93bf776a72aaf4dec08cb31bb3d41b7","version":8}]}