{"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-6rxhk1fu","versions":[{"created_at":"2026-06-10T22:52:27Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy96334560→quote21362937 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"0e1eca659a937ce41d4a0e9b10cc7711f289ca62db88b6a8abc781c72588aaa6","version":21},{"created_at":"2026-06-10T13:32:58Z","element_count":77,"note":"backfill: 延床=居室床スラブ実面積87.5㎡(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":"98a194aeaf498b958603c17fa0719e363361d8ed11502fa338bd946d1765e24c","version":7},{"created_at":"2026-06-10T12:16:03Z","element_count":71,"note":"5軸GA polish 61->96 by M5 (autonomous)","saved_by":"mcp","sha256":"1a33fc94f61cee748f3bde0a3bdbb2e377c1ab56afbee5ff561c0b7f77b19ec6","version":3}]}