{"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-3jifszye","versions":[{"created_at":"2026-06-10T22:52:40Z","element_count":65,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy72844800→quote24636447 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"c86e5cd2149745ac63724a4f9279b0012e053ec6a923ef1bc6dec448ce6338aa","version":15},{"created_at":"2026-06-10T15:02:30Z","element_count":69,"note":"5軸GA polish 61->95 by M5 (autonomous)","saved_by":"mcp","sha256":"2f362b578e12fad83aa1cea9bf5d9b1017e59b735c3c1a6e9a8289b7e9ab075d","version":6}]}