{"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-ffkcy2va","versions":[{"created_at":"2026-06-10T23:05:43Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy102533759→quote19954947 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"37eca66ceea7e255608864c4f2c264ee6a1357b7c9db66ea4599cfc18095e691","version":9},{"created_at":"2026-06-10T22:16:54Z","element_count":73,"note":"5軸GA polish 58->97 by M5 (autonomous)","saved_by":"mcp","sha256":"3026aede6f18a6720672fab8593f015ac6c42db979ececf246f931891f4b719c","version":4}]}