Create an isolated git worktree for parallel work. The worktree gives you a separate copy of the repository on a new branch, so you can make changes without affecting the main working directory.

Use this when:
- You need to work on multiple tasks in parallel
- You want to isolate experimental changes
- A subagent needs its own branch to work on

The worktree will be created in .vikasit/worktrees/ with its own branch. Use ExitWorktree when done.