{"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-w1kymjgt","versions":[{"created_at":"2026-06-10T22:59:13Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy65310624→quote24721040 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"b62179bd83674ff1e61b6616dd0987938be9b96261274e80265575bc3b389580","version":10},{"created_at":"2026-06-10T22:01:58Z","element_count":54,"note":"revert: houki rescan NG -> restore pre-polish elements (M5 2026-06-11)","saved_by":"mcp","sha256":"da8213439bc167635410ebbe4dac3242a68e805e2189d0a8a2898785bb834a6e","version":4},{"created_at":"2026-06-10T20:38:18Z","element_count":69,"note":"5軸GA polish 58->93 by M5 (autonomous)","saved_by":"mcp","sha256":"3a4059754cf97bd7914f1b7e3f79cf6c32a89ea5a564144c5f6d704ece45b829","version":2}]}