{"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-xgaefj0s","versions":[{"created_at":"2026-06-10T22:52:28Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy72844800→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":"78b4c13a7e4ea51f79097d14954ae6961889b43b6827fce102e77602203c0b68","version":22},{"created_at":"2026-06-10T22:00:49Z","element_count":54,"note":"revert: houki rescan NG -> restore pre-polish elements (M5 2026-06-11)","saved_by":"mcp","sha256":"8e8451752c9dea70cb6cc76175c78ba2f32da3562c060566f26904397b388fef","version":16},{"created_at":"2026-06-10T13:33:10Z","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":7},{"created_at":"2026-06-10T12:31:46Z","element_count":69,"note":"5軸GA polish 61->95 by M5 (autonomous)","saved_by":"mcp","sha256":"2f362b578e12fad83aa1cea9bf5d9b1017e59b735c3c1a6e9a8289b7e9ab075d","version":4}]}