{"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-zbdmhce7","versions":[{"created_at":"2026-06-10T22:54:38Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy61441200→quote24212747 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"a6d70cca6ce5aac160608c607eeb2826affcb7a2b0913ef1cb3c3e753aacca52","version":10},{"created_at":"2026-06-10T17:40:10Z","element_count":84,"note":"5軸GA polish 58->97 by M5 (autonomous)","saved_by":"mcp","sha256":"703fc5f282ad6e3b8b37db0eeceb0b5bca2110ec8a930ce2224cf991c103ce56","version":3}]}