{"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-1cx7iuod","versions":[{"created_at":"2026-06-10T22:54:21Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy84287347→quote23031340 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"f87d71148a2d08aee186c93a894147d4f2f2a518c101d8d22c5230c223d0edff","version":11},{"created_at":"2026-06-10T22:01:43Z","element_count":47,"note":"revert: houki rescan NG -> restore pre-polish elements (M5 2026-06-11)","saved_by":"mcp","sha256":"5767f61d3b15eebd5ae0f28bbbac482d5ced9eae8439d3b700e982e42a43efda","version":5},{"created_at":"2026-06-10T17:39:36Z","element_count":90,"note":"5軸GA polish 61->98 by M5 (autonomous)","saved_by":"mcp","sha256":"7fedf313ca988dc8a5af7174657afbccf50a1cd69d5d40cf9bc35514ae66a964","version":3}]}