{"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-thechurchstreetbunga-bh161zr7","versions":[{"created_at":"2026-06-10T22:52:15Z","element_count":85,"note":"legacy fix: jpy90050184→quote24581776 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"40cc755e2e869ddfafab29400456980a78beba4845c45dd5e92ba50e412aa2f5","version":25},{"created_at":"2026-06-10T13:19:46Z","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":"4114685168fb3ad8f16bb26e402357ee86e9b332be8185215f85b8efab8572bd","version":10},{"created_at":"2026-06-10T10:10:05Z","element_count":90,"note":"5軸GA polish 43->98 by M5 (autonomous)","saved_by":"mcp","sha256":"cf5dd5c875f2e8f3507792014209b4cb171199a0682845628aee546d8e582a82","version":2}]}