OpenAI just integrated Codex directly into ChatGPT and turned it into a three-mode system.Chat for ideas and general questions. Work for documents, spreadsheets and analytics. Codex for code, files and full projects.Before you had to figure out which app to open. Now you need to know which mode to launch, because there's a catch. Work and Codex share the same usage limit. Ask Work to compile a large report and you might lose access to Codex right when you need it most.OpenAI isn't building a cha