Visual Studio Code 1.138, released September 16, lets developers move Codex sessions between ChatGPT and VS Code, run agents inside local development containers, create pull requests from agent sessions, and schedule certain tasks to run automatically. At the center of the change is Microsoft's Agent Host, a dedicated process that owns and runs agent sessions separately from any particular editor window; previously VS Code ran its local agent harness inside the extension host associated with an individual window, and closing that window stopped the runtime. The Agent Host moves session state, harness adapters, and basic workspace capabilities into a separate process, allowing multiple VS Code windows and other clients to connect to the same session. Closing a folder does not end an active local session, but quitting VS Code still stops the local Agent Host; remote hosts can continue running on another machine and be reached through the desktop application or a browser. With expanded Codex support, a developer can begin a Codex conversation in the ChatGPT application and continue the same session in VS Code, retaining its history, and Codex can turn a workspace-free conversation into a project session by attaching a local folder, choosing to work directly in that folder or create an isolated worktree, preserving the session's title, conversation history, active request, selected model, and permission settings.