{"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-33apx59t","versions":[{"created_at":"2026-06-10T22:54:04Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy64133856→quote19293329 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"90bed05af08a9ef27591fdd8f76ad3a5989602aa4e2df44f2b8d828d5b26bce0","version":10},{"created_at":"2026-06-10T17:23:08Z","element_count":73,"note":"5軸GA polish 60->93 by M5 (autonomous)","saved_by":"mcp","sha256":"da931072e403d7bc8f0333b964f5e8dc9afd40367c76b1687c083a5d1108ef3a","version":2}]}