{"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-cwp6lpqj","versions":[{"created_at":"2026-06-10T23:05:53Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy87413760→quote24371566 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"c7e69ca99209ca6faf7ba0ebac3b44c91e3630ca24bc6e11ee2937d42ab70202","version":9},{"created_at":"2026-06-10T22:17:37Z","element_count":72,"note":"5軸GA polish 56->95 by M5 (autonomous)","saved_by":"mcp","sha256":"0d2a94b6f40fba09530c7da09e34b2fc8f99bdb7d2793f3fac28fb01ed5cfcaf","version":4}]}