v0.4.10

Fixed

• Windows uninstall now removes the node key created under the SYSTEM profile.
  The boot task runs as SYSTEM, so the identity lives at
  ...\System32\config\systemprofile\.warren\node.key, but uninstall runs as the
  elevated admin user and only cleared that user's profile. The stale key
  survived, so a reinstall reused the old identity and the hub kept the node on
  its previous approval (you had to revoke the key on the hub to re-enroll).
  Uninstall now clears the SYSTEM-profile key path explicitly.