{"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-ilhnw4ro","versions":[{"created_at":"2026-06-10T22:52:44Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy102533759→quote20863604 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"5041b92df952031ad6e1eb1c868245acb80c8b787abf5a56f2b305367a7d25f2","version":12},{"created_at":"2026-06-10T15:36:55Z","element_count":71,"note":"5軸GA polish 51->97 by M5 (autonomous)","saved_by":"mcp","sha256":"a0d23540d15b469fddb201c200aa55f6fb501363254a8fcc780ad9325dd7a54b","version":4}]}