{"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-6ooc1fcv","versions":[{"created_at":"2026-06-10T22:52:30Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy63326340→quote25453106 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"29940fc928808a51dfb68da4fa7079589cd106f42f2a85b7134434ca1444d03c","version":21},{"created_at":"2026-06-10T22:01:18Z","element_count":47,"note":"revert: houki rescan NG -> restore pre-polish elements (M5 2026-06-11)","saved_by":"mcp","sha256":"38be71ee72eb5441c9da61a0874628898ee2171c21f2e1c8ed4a6c3e7d13081b","version":15},{"created_at":"2026-06-10T13:34:29Z","element_count":66,"note":"backfill: 延床=居室床スラブ実面積118.8㎡(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":"00b8ce45df94206d0e9bf5f6da4ed2a504d77f17a6d88684f74dab9e7d5a83b7","version":7},{"created_at":"2026-06-10T12:48:10Z","element_count":89,"note":"5軸GA polish 61->97 by M5 (autonomous)","saved_by":"mcp","sha256":"3f1b46c602ed9aa246b63e1dea53b64e9cb491fe070bd406d3a15313ab99d9ba","version":4}]}