{"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-wyshbckd","versions":[{"created_at":"2026-06-10T22:57:23Z","element_count":63,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy66487392→quote24122093 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"452dac08e5e2cb7923f9158b8357a6e60630d8c08b9422ff82b755c27c60499f","version":9},{"created_at":"2026-06-10T19:19:02Z","element_count":72,"note":"5軸GA polish 54->93 by M5 (autonomous)","saved_by":"mcp","sha256":"9c6d6b3331875b3920b06d9b1ee8e32009685ce9515b258938c3a120ca739380","version":2}]}