{"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-nimrfj2p","versions":[{"created_at":"2026-06-10T22:52:14Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy85444799→quote22666392 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"39aff9c787eac17c3c4447b1e5889aeee4957f1bf6242ccc583c39f1c42d972d","version":25},{"created_at":"2026-06-10T13:18:39Z","element_count":85,"note":"backfill: 延床=居室床スラブ実面積92.5㎡(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":"1d9a1be1afd03a1ad33c31335d8f50d77b168e3c5b367108f4496629318d7fe1","version":10},{"created_at":"2026-06-10T10:09:06Z","element_count":74,"note":"5軸GA polish 55->97 by M5 (autonomous)","saved_by":"mcp","sha256":"07d06c40de9ecf420c88863bd8bce3a9e5a8f8adef43e2d7747e7a4d4e8b3e24","version":2}]}