Claude Code 2.1.290 adds a Deny button to sign-in approval, letting you cancel pending logins instantly. The claude attach and claude logs commands now accept partial session names instead of IDs. New /claude-api managed-agents-onboard commands set up Managed Agents patterns and Console quickstart templates via the ant CLI. VSCode users can now review and run plugin marketplace commands directly from the Manage plugins dialog. Claude Tag in Slack gains fast mode: use !fast to enable it and !fast off to disable, with replies labeled while active.