{"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-g4-4ugdpgtw","versions":[{"created_at":"2026-06-04T17:01:33Z","element_count":63,"note":"polish: batch-improve-100 2026-06-04 (90.1->98.8)","saved_by":"editor","sha256":"d59737c06fbf766c35b08567b27cd4f2c8bdc6de82ecf6a02c2e2b00b78a64b6","version":5},{"created_at":"2026-06-04T05:52:03Z","element_count":55,"note":"GA diverse re-design 2026-06-04: 総合 97.0→90.1 (総2階(箱)・吹抜 縁側 ピアノ室 PV 雨水 天窓 南面サンルーム / 適応度 90.1 (美 94 環 100 楽 91))","saved_by":"editor","sha256":"3da8160bee830c4ac440386887124332f631a224d3268d0927d30e96799391ff","version":4},{"created_at":"2026-06-04T04:56:51Z","element_count":101,"note":"GA batch-improve 2026-06-04: 総合 49.8→97.0 (中庭ロの字・吹抜 ピアノ室 PV 雨水 天窓 南面サンルーム / 適応度 97.0 (美 92 環 100 楽 100))","saved_by":"editor","sha256":"92bef77d82a7cb92a796511b5db5e1052d4efb51262dc059ba34a23b7883a8fa","version":3},{"created_at":"2026-06-04T04:56:51Z","element_count":17,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"f5c65dc84d4016b5fec9d136a4146d4770f89b13c89182fb80cd3134e66320e7","version":2}]}