Apollo 0.18.3

[0.18.3] - 2026-11-02

Added

• Feedback through your email app. Open a message with the support recipient
  and feedback text already filled in, then review and send it yourself.
• A verified legacy update bridge. An operator migration script can point
  older clients at signed GitHub artifacts after a complete release is published.
  It checks signatures against the legacy key and backs up the previous manifest.

Fixed

• Reject stale release artifacts. Uploading a macOS updater now checks its
  actual version and app identity. Installer filenames match the full release
  version so stable and beta artifacts cannot be mixed accidentally.