{"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-5n96ilgv","versions":[{"created_at":"2026-06-10T22:52:33Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy102533759→quote21411198 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"70352812875bf0d71a215c61e903cc2bfbc3737bcec3aef3ab43cfd694558b5a","version":20},{"created_at":"2026-06-10T13:44:10Z","element_count":66,"note":"backfill: 延床=居室床スラブ実面積93.9㎡(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":"56d5e1c27b072eb64beba28677029a86cbf15f9bd85043eecdd414fbac0f6de7","version":7},{"created_at":"2026-06-10T13:21:57Z","element_count":72,"note":"5軸GA polish 56->97 by M5 (autonomous)","saved_by":"mcp","sha256":"0733456c665580c16a9628cf52cee222319f9d6b3b76be643848eaf1863ac37f","version":4}]}