vspawn-tree

Same as /vspawn, but opens a dedicated git worktree for the child session (equivalent to vspawn --worktree). Only use when the user explicitly invokes /vspawn-tree or $vspawn-tree; never auto-trigger. This is a real session run by its own process in the vlx-term left-panel tree — not an in-process sub-agent, and not a background Task. Available only inside vlx-term-hosted sessions.