{"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-48pxhltm","versions":[{"created_at":"2026-06-10T23:35:21Z","element_count":63,"note":"legacy fix(polish再汚染): 平屋floors2→1 / jpy96334560→quote22758819 (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":"224aa7d30043cba6520b555a296c0309e9225f7380ee16cbdffa48bc0e68c63e","version":11},{"created_at":"2026-06-10T23:08:02Z","element_count":70,"note":"5軸GA polish 61->96 by M5 (autonomous)","saved_by":"mcp","sha256":"9c653309c71246b62a507184703a3db01d2867b35e682a47e699e84dbd59f5d1","version":8},{"created_at":"2026-06-10T23:07:26Z","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":"13321c035b00ee15f293c82a93456b1fa1ac94bb2318f58cf2be1dc89828538c","version":7}]}