{"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-vx4f0100","versions":[{"created_at":"2026-06-10T22:52:41Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy87379776→quote21031370 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"abc03bd99b2245b9334df2b11537c0749bc1a4d0ecc7ceb5e453688f5416c4b8","version":14},{"created_at":"2026-06-10T15:02:16Z","element_count":84,"note":"5軸GA polish 60->98 by M5 (autonomous)","saved_by":"mcp","sha256":"bb54376944c0dae69b067696f03f7c9d11c4933e849b43a808e6a90a7503d6ce","version":5}]}