Also supports --sync mode to pull latest main into an active worktree.

Produces .workflow/worktrees.json registry in the main worktree and .workflow/worktree-scope.json marker in the worktree, and writes a scoped state.json inside the worktree containing only the forked milestone's artifacts.

<required_reading> @~/.maestro/workflows/fork.md </required_reading>

<deferred_reading>

worktrees.json — read when initializing or updating worktree registry
worktree-scope.json — read when creating worktree scope marker </deferred_reading>

maestro-fork