{"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-fb306r0a","versions":[{"created_at":"2026-06-10T22:50:20Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy90050184→quote24269040 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"61b0c52f348eb2e61ba6708ab14d6692f8dd8f76b894c8cd97f3acff9ed357c2","version":25},{"created_at":"2026-06-10T13:08:09Z","element_count":85,"note":"backfill: 延床=居室床スラブ実面積103.4㎡(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":"74b1c66b49525b35311ff9474e847654d59716a33ce0a88538f870a54e8cb5d2","version":11},{"created_at":"2026-06-10T07:25:56Z","element_count":91,"note":"5軸GA polish 54->98 by M5 (autonomous)","saved_by":"mcp","sha256":"98728276e0137a7b54565bbfbfef4bc8624da414fee76e4f39ebc2f2fd1ddfc0","version":2}]}