Proxytrace 1.2.0

Added

• Offline-only licenses for air-gapped installs. Proxytrace now recognises license keys issued
  as offline-only: they are verified entirely on the box (signature + expiry) and are never
  checked against the license server, so an install with no outbound internet keeps running without
  hitting the offline grace window. Such a key cannot be revoked and works until its built-in expiry
  (capped at 365 days), at which point the installation downgrades to Free. Settings → License
  shows an "offline license" note and hides Re-check now for these keys. Normal (online) keys are
  unchanged — still re-checked every 24 hours and revocable.