(Corrects first paragraph to show the app is on desktop, not mobile) By Deepa Seetharaman SAN FRANCISCO, Feb 2 : OpenAI is launching a desktop app for its coding tool, Codex, in hopes of seizing momentum - and customers - from its rivals in the AI code-generation space.  OpenAI said it designed its Codex app to make it easy for users to simultaneously manage multiple artificial-intelligence agents over a long period of time. The app can also then use code to do things like gather and analyze