{"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-qvg9hpge","versions":[{"created_at":"2026-06-10T22:54:02Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy102533759→quote20835511 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"e6acd0afa94e7d477313346ad948101e7b94baf9525c733d1754fef5cd78745b","version":10},{"created_at":"2026-06-10T17:22:56Z","element_count":71,"note":"5軸GA polish 60->96 by M5 (autonomous)","saved_by":"mcp","sha256":"9379f043b68809ac6223f488f46208b93d770270a2d81a09f2cb31d343cfa088","version":2}]}