{"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-o97hzc5s","versions":[{"created_at":"2026-06-10T22:52:06Z","element_count":63,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy72844800→quote24966245 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"1d2a8fd72a70351515aa88185274a5cc698e05aebda3236ab611d08289060ca5","version":26},{"created_at":"2026-06-10T13:12:40Z","element_count":63,"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":"b00f66d74206a97376ba6b8750436b6926b3788af217738ff49b9ae83d31004b","version":11},{"created_at":"2026-06-10T08:48:55Z","element_count":69,"note":"5軸GA polish 61->95 by M5 (autonomous)","saved_by":"mcp","sha256":"2f362b578e12fad83aa1cea9bf5d9b1017e59b735c3c1a6e9a8289b7e9ab075d","version":3}]}