{"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-1pirs8yo","versions":[{"created_at":"2026-06-10T22:52:34Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy73729440→quote20333848 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"063caff7f7e39a4ecf394ecfa626f754f5dc948d551253577ea0076f88cb2987","version":19},{"created_at":"2026-06-10T13:55:22Z","element_count":84,"note":"5軸GA polish 62->97 by M5 (autonomous)","saved_by":"mcp","sha256":"06b4a0b81905d297b2c38c8831b8bda50e7473a25afc9843b5bfdd0e8cc9e74e","version":6},{"created_at":"2026-06-10T13:45:35Z","element_count":50,"note":"backfill: 延床=居室床スラブ実面積74.1㎡(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":"7dd55eb686531f7c55eb550d22183a701cc775cab942046629bd74e6273e32a0","version":5}]}