{"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-orj1yrxl","versions":[{"created_at":"2026-06-10T22:52:35Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy84287347→quote21458960 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"66c7011669083b9b4a7d378ba4e47bcd0f2bc2fff5e40f39e3f2339fffd8294a","version":19},{"created_at":"2026-06-10T13:56:50Z","element_count":90,"note":"5軸GA polish 57->97 by M5 (autonomous)","saved_by":"mcp","sha256":"cbfe3f6acdd84ef9e2edf5446ebe6549b5d56abc8f2a9f9549c31be534f855ac","version":6},{"created_at":"2026-06-10T13:46:00Z","element_count":47,"note":"backfill: 延床=居室床スラブ実面積90.0㎡(基礎/屋外/ロフト除外)。設備数量/コスト過大の是正","saved_by":"mcp","sha256":"98436831223fcc096281ce8047ece4afe3d91d33136e0f08a9d75874cb7a9029","version":5}]}