{"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-qppnhymw","versions":[{"created_at":"2026-06-10T22:58:50Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy48570969→quote20764725 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"8ea0b9426db317ed12ba4e2664e889bf87cda606c2a896d1147dd8ea8b500f70","version":9},{"created_at":"2026-06-10T20:22:39Z","element_count":83,"note":"5軸GA polish 56->94 by M5 (autonomous)","saved_by":"mcp","sha256":"2f29943c7b7b3656cbfe1a619842c3a3f34f255ad016466c41d33f554302f0a4","version":2}]}