{"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-kingfisheredgehouse-5rtkar1o","versions":[{"created_at":"2026-06-10T22:52:03Z","element_count":85,"note":"legacy fix: jpy80119199→quote24269040 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"971dcae1edc91fe0bb1d5b324ef8283225f123f2a1bce8e9550e986d0720993e","version":26},{"created_at":"2026-06-10T13:11:26Z","element_count":85,"note":"backfill: 延床=居室床スラブ実面積103.4㎡(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":"74b1c66b49525b35311ff9474e847654d59716a33ce0a88538f870a54e8cb5d2","version":11},{"created_at":"2026-06-10T08:22:36Z","element_count":72,"note":"5軸GA polish 43->96 by M5 (autonomous)","saved_by":"mcp","sha256":"379bf1153062887d78df6da21244c7b3de44d5895e30fb6bb695673225cea6c9","version":2}]}