{"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-m7s9kthn","versions":[{"created_at":"2026-06-10T22:52:34Z","element_count":65,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy72844800→quote25174952 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"0b593b8998e41ca0bccf59f0c5e44c9c36c92932af911dc4b0a40e9ed189cac2","version":19},{"created_at":"2026-06-10T13:45:19Z","element_count":65,"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":"88192452f76c95e831f295a23d0f09a7d74f663a4d36b8f4fcdb8718d69b98bb","version":6},{"created_at":"2026-06-10T13:22:25Z","element_count":73,"note":"5軸GA polish 56->95 by M5 (autonomous)","saved_by":"mcp","sha256":"4722b1eb5ddde726b733dd516879c298232f5c86b1853968ac28f24ad8407a92","version":3}]}