{"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-bp0ik51p","versions":[{"created_at":"2026-06-10T22:52:20Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy84287347→quote22514261 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"3e044aa4b3690518165957ce1339111081fa3034c5af5a428d4e02864961c8cc","version":26},{"created_at":"2026-06-10T22:00:34Z","element_count":54,"note":"revert: houki rescan NG -> restore pre-polish elements (M5 2026-06-11)","saved_by":"mcp","sha256":"e2a9b8463f0b75215947e39e21837330f5611f543f73f2e8a464f43788e3fefd","version":20},{"created_at":"2026-06-10T13:25:29Z","element_count":85,"note":"backfill: 延床=居室床スラブ実面積92.5㎡(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":"4907649b8e71ca54c88c8a0671cc1c13cf6bd00a104bc417833cccafd52187e1","version":11},{"created_at":"2026-06-10T11:10:07Z","element_count":91,"note":"5軸GA polish 60->98 by M5 (autonomous)","saved_by":"mcp","sha256":"9b4a98cc705d2e3234ddf78ea9f9173c55d302986a4bdf929644e589872e1609","version":4}]}