{"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-kvn7hnsj","versions":[{"created_at":"2026-06-10T23:35:27Z","element_count":65,"note":"legacy fix(polish再汚染): 平屋floors2→1 / jpy85444799→quote21590573 (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":"7e8bdddcddb5b3b8eb37b0c2f77dad5ef3db7e61b83a6f937b75c10fc508655c","version":11},{"created_at":"2026-06-10T23:08:18Z","element_count":73,"note":"5軸GA polish 53->97 by M5 (autonomous)","saved_by":"mcp","sha256":"f0eaeed1a86a3c1c3501124ea3fc1eb6200e278f5b18695ae79302c272c2c6a2","version":8},{"created_at":"2026-06-10T23:07:43Z","element_count":46,"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":"3f82b5cc986773a173570bd7ee45672e1a0af9e78e4268c1bba1988c300bd2f8","version":7}]}