{"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-wsdftmtk","versions":[{"created_at":"2026-06-10T22:52:33Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy102533759→quote20898438 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"f1031420a638fd0f45a7cbbaf5772a5a716d9af5adc2cc28852f9903845eb09c","version":20},{"created_at":"2026-06-10T13:44:38Z","element_count":85,"note":"backfill: 延床=居室床スラブ実面積81.7㎡(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":"27d5c39f29d8a21c254858222794a6bfde74b5537f842d04d6d555940fe60695","version":7},{"created_at":"2026-06-10T13:22:06Z","element_count":73,"note":"5軸GA polish 56->97 by M5 (autonomous)","saved_by":"mcp","sha256":"3ee5875e254063a445e09a71d0b00f952628d46bce0a2638d25119ae62cc4a1f","version":4}]}