{"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-7cmenssq","versions":[{"created_at":"2026-06-10T22:52:37Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy73729440→quote23910325 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"e9bafaf92473f5ef705dbaf0ec8f92fb850eebf1b43a377394b840c0bf63fdb3","version":18},{"created_at":"2026-06-10T22:01:03Z","element_count":54,"note":"revert: houki rescan NG -> restore pre-polish elements (M5 2026-06-11)","saved_by":"mcp","sha256":"8e8451752c9dea70cb6cc76175c78ba2f32da3562c060566f26904397b388fef","version":12},{"created_at":"2026-06-10T14:29:27Z","element_count":84,"note":"5軸GA polish 52->97 by M5 (autonomous)","saved_by":"mcp","sha256":"c39668541cf0780d5822f8f8a9d0623f0d7b3ed754943b77ad60b819468fb068","version":7}]}