{"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-8aeumdkw","versions":[{"created_at":"2026-06-10T22:59:36Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy90050184→quote22448917 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"625ddfe7142014ca9d3fd35e48ecc331dd8887ac6ba9d682b2dbe3488031e4de","version":9},{"created_at":"2026-06-10T20:38:23Z","element_count":90,"note":"5軸GA polish 54->98 by M5 (autonomous)","saved_by":"mcp","sha256":"72e5afd412397850022bc5043eaa7468ee4ba837da56a4b0f08c05855abda1a1","version":2}]}