{"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-u2pbbcc6","versions":[{"created_at":"2026-06-10T23:39:57Z","element_count":73,"note":"5軸GA polish 50->97 by M5 (autonomous)","saved_by":"mcp","sha256":"66d381bfeea6ae39d0af06f90345771ae68b0829f20cb96fbeb5a18c0dc729ee","version":11},{"created_at":"2026-06-10T23:09:18Z","element_count":44,"note":"legacy fix: rooms設備語除去 / jpy30120000→quote18912642 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"69c505a26546a618cad1b32e610232efbde71e010161dce8435dccc66e030d28","version":7}]}