sparkwing CLI v0.43.0

Added

• cli: sparkwing doctor reports ref worktrees left behind by a submission
  whose run the store no longer holds. It reports them rather than removing
  them, because deregistering a worktree needs git and doctor deliberately does
  not reach the orchestrator; a consumer reclaims them as it starts.

Fixed

• cli: the foreground --sw-ref worktree is deregistered when its run ends.
  Cleanup removed the directory but never pruned, so a git worktree remove
  that failed left the origin repository holding a registration that blocked
  adding the same path again.
• cli: runs submit explains its --sw-index refusal in terms of what the
  flag does. It described the index as a path the submitting process holds open;
  the binding is an environment variable naming a file sparkwing neither creates
  nor can reproduce, which is the reason a detached run cannot honor it.