{"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-pqfhri9x","versions":[{"created_at":"2026-06-10T22:52:18Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy63326340→quote22578729 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"e5bfa542bf1fd0df8ccc049b09d6c92df07b3dd9e3fcf602ef4e2ffb211af96e","version":25},{"created_at":"2026-06-10T13:24:19Z","element_count":77,"note":"backfill: 延床=居室床スラブ実面積97.8㎡(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":"a2478581aff8dc92a75ae448d130ad79ff6ffe7eb66c35485b313da23e66360e","version":10},{"created_at":"2026-06-10T10:52:57Z","element_count":90,"note":"5軸GA polish 61->97 by M5 (autonomous)","saved_by":"mcp","sha256":"713bb2d18456c34b6d83b8012927dbab089637dbf40084de2e298d2bf93f45e4","version":3}]}