{"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-8a5zr3v4","versions":[{"created_at":"2026-06-10T23:35:23Z","element_count":65,"note":"legacy fix(polish再汚染): 平屋floors2→1 / jpy73729440→quote24826628 (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":"f5f440a27f38368796888ee42567002397c0308167d6df25c396c671a10fc22b","version":12},{"created_at":"2026-06-10T23:08:08Z","element_count":84,"note":"5軸GA polish 56->97 by M5 (autonomous)","saved_by":"mcp","sha256":"7ebc0ae8a70a42c6e2c509da9a6bd81afe951431cbca67e99eb0f4f6609083ef","version":9},{"created_at":"2026-06-10T23:07:21Z","element_count":46,"note":"legacy fix: rooms設備語除去 / jpy45030000→quote19790415 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"10b104232637c58e6032a7ebf253a3837bb437c3362ea4800f54e0571e0c62e6","version":8}]}