{"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-8uo1cs0f","versions":[{"created_at":"2026-06-10T22:51:09Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy90050184→quote20699765 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"bcdcff65a4ebc8f758d36644c1a4a6c626a22c00403662a281ce9dc3389752fc","version":25},{"created_at":"2026-06-10T13:09:31Z","element_count":66,"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":"b9b8f42f877f967a9d5e429ebc94e81dbad8c5dc7e383de27daf71eba0bd2c25","version":11},{"created_at":"2026-06-10T07:59:28Z","element_count":91,"note":"5軸GA polish 60->98 by M5 (autonomous)","saved_by":"mcp","sha256":"5d5102f0de1d622cc79560c8a2936f46984621b08820ac3e4a5952cb8eeeb88d","version":2}]}