{"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-w7b8z9np","versions":[{"created_at":"2026-06-10T22:52:26Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy75991608→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":"812a824ba3e4cf1af805623a0d89870b5841497dd318acc2be2b55a3ae508813","version":22},{"created_at":"2026-06-10T13:31:34Z","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":"272c17f9b90af22df45c917b121f0b08d6722f36619f0ccc169786faee118529","version":8},{"created_at":"2026-06-10T11:59:59Z","element_count":90,"note":"5軸GA polish 60->97 by M5 (autonomous)","saved_by":"mcp","sha256":"93f705d4eb3509d52cd3729df754d7babde86f74bfe2326caef355211e4f7b5f","version":3}]}