{"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-0b8xcqwu","versions":[{"created_at":"2026-06-11T00:31:43Z","element_count":73,"note":"5軸GA polish 56->97 by M5 (autonomous)","saved_by":"mcp","sha256":"85efb5512cfb33943469e5836ee3973632d93c0db5c552b56c4e7c5ef99db30b","version":15},{"created_at":"2026-06-10T23:10:18Z","element_count":50,"note":"legacy fix: rooms設備語除去 / jpy28750000→quote17095595 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"39df6fac5ce96ed1e6c510179488740baefa0dc56c25de0b8a1168d4de93778b","version":7}]}