{"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-sfvygjhl","versions":[{"created_at":"2026-06-10T23:35:34Z","element_count":77,"note":"legacy fix(polish再汚染): 平屋floors2→1 / jpy72816480→quote19910068 (旧polishコード再書き込みの再是正・rollback=m5:legacy_fix_rollback.jsonl phase=polish_recontam)","saved_by":"mcp","sha256":"d20ab268f9ce4cdc2865cb7d5516428749b7b8d453512d2c9a411d135e912e90","version":12},{"created_at":"2026-06-10T23:07:53Z","element_count":84,"note":"5軸GA polish 61->98 by M5 (autonomous)","saved_by":"mcp","sha256":"74f6c0d59b54640fc5000a3eb1e80e500fe19682163dd1ef8d51ed7bc64a7be5","version":9},{"created_at":"2026-06-10T23:07:23Z","element_count":50,"note":"legacy fix: rooms設備語除去 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"b39abe5b321491ad0844324048df6111b85d3bccffb4759fe20cf4085ab8b91a","version":8}]}