{"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-dmsm49l6","versions":[{"created_at":"2026-06-10T22:52:01Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy72816480→quote21774821 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"ecf6337328d47bc2e249e9839a95d4afe76f9cdf19b3775860cb82678613ec7d","version":26},{"created_at":"2026-06-10T13:10:34Z","element_count":66,"note":"backfill: 延床=居室床スラブ実面積93.5㎡(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":"b3c3ad3dcab72fd87aedf1b73c9957dabf71e6923ab31046be9ca0934d8a0ee8","version":11},{"created_at":"2026-06-10T08:15:41Z","element_count":85,"note":"5軸GA polish 61->98 by M5 (autonomous)","saved_by":"mcp","sha256":"819c7c20c0ddca86034f39041e423846d8b459b468f36d3d2d96d57447fc12bb","version":2}]}