{"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-70fuefva","versions":[{"created_at":"2026-06-10T23:06:32Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy80278800→quote23180049 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"9ae90fedab03108e1d4276290664e45fcbcd627f624535e162ef9abeb3f23472","version":9},{"created_at":"2026-06-10T22:34:35Z","element_count":69,"note":"5軸GA polish 61->96 by M5 (autonomous)","saved_by":"mcp","sha256":"3c78f92e0ceefc79a4d6ef06b224f57fd04a03648c34bf797fd99fb98d1662d5","version":6}]}