{"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-063jmne6","versions":[{"created_at":"2026-06-10T23:39:52Z","element_count":74,"note":"5軸GA polish 50->95 by M5 (autonomous)","saved_by":"mcp","sha256":"bfb9c9826a82582b66cd0e4b06096927025e7a17f9b1bf90c4dbd9059e86c344","version":11},{"created_at":"2026-06-10T23:08:56Z","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":"eec2a8932d73a89b0d70df038c4834945a3df6ba00ffbde98135fe75e21503aa","version":7}]}