{"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-rvf5gc5l","versions":[{"created_at":"2026-06-10T23:24:00Z","element_count":71,"note":"5軸GA polish 50->95 by M5 (autonomous)","saved_by":"mcp","sha256":"4b1c0d0cb90da53abe75de5cedd05218f2e134ca1d709366f6454d5067bded75","version":10},{"created_at":"2026-06-10T23:08:38Z","element_count":54,"note":"legacy fix: rooms設備語除去 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"ce1e2fe1e4a007c144fb2a83e619a4d2303ed3b74b8a60ceddc49943cad5bb7a","version":7}]}