{"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-i85k3j1a","versions":[{"created_at":"2026-06-10T23:39:40Z","element_count":89,"note":"5軸GA polish 50->98 by M5 (autonomous)","saved_by":"mcp","sha256":"57ef34311128bdb3642ccdc9f7ec1cd1e251aecc77020a27f96f7443dd89b5df","version":11},{"created_at":"2026-06-10T23:08:51Z","element_count":47,"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":"f10838dc4ae4f323255af9c8e0212d000b5a24c5af04935725b5c58c6c3b2849","version":7}]}