Hermes WebUI Desktop v0.3.0

Added

• Auto-update (the Sparkle-parity feature). The app now checks GitHub Releases
  about ten seconds after launch — silently unless an update actually exists — and
  on demand via Check for Updates… (app menu on macOS, the tab bar's ⋯ menu on
  Windows/Linux). When a new version is found you get a native "Install and
  Relaunch / Later" prompt; the download is verified against a signing key pinned
  in the app before anything is installed. Coverage: Windows installer builds
  (the installer runs and relaunches), Linux AppImage (replaced in place),
  and macOS (.app replaced in place). .deb installs can't self-update by design —
  the interactive check tells those users to grab the new package from Releases.
  Release builds now ship signed updater artifacts and a latest.json manifest;
  because releases are published from drafts, installed apps only ever see
  smoke-tested builds. This release is the first carrying the manifest, so
  v0.3.0 is the last manual download — every release after this arrives
  in-app.