Tip: /fork Now Spins Up a Background Session — Use /subtask for the Old In-Session Behavior

Claude Code Changelog·medium signal

As of v2.1.212, /fork copies your conversation into its own background session (a new row in `claude agents`) so you keep working in the current one; the in-session subagent it used to launch is now /subtask. /resume in the agent view also opens a picker of past sessions — including ones deleted from the list — and resumes your pick as a background session. Rebind muscle memory before it bites.