{"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-x7nlv6ju","versions":[{"created_at":"2026-06-10T22:52:13Z","element_count":63,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy102533759→quote24719607 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"2ec78531790ee2be61ce7d2682f3ac49abc497a763a62dbb2300df0bd05b3698","version":26},{"created_at":"2026-06-10T21:59:54Z","element_count":55,"note":"revert: houki rescan NG -> restore pre-polish elements (M5 2026-06-11)","saved_by":"mcp","sha256":"d231273b4e12a2516a00ad1c165814212cd8acbbc1ea55ce4a7557d20de7456d","version":20},{"created_at":"2026-06-10T13:16:30Z","element_count":63,"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":"baa5cdafa96455346e94893a41c033b0110cfb2f0b6e82bf7a70f56d7b645ff2","version":10},{"created_at":"2026-06-10T09:54:05Z","element_count":72,"note":"5軸GA polish 60->97 by M5 (autonomous)","saved_by":"mcp","sha256":"93893e2a67e7a728ebf2b80a31e59f22dc2f62ce6dc6707bb1feeef4a916d7ec","version":2}]}