airlock 0.3.1

[0.3.1] — 2026-07-14

Patch release: shipping the companion with a proper app icon so it
stops looking like a generic PkgInfo blank in Finder / Launchpad /
About dialogs.

Added

• App icon for the macOS companion. SVG source at
  companion/mac/assets/AppIcon.svg (an airlock-hatch metaphor in
  the site's green gradient), rendered to AppIcon.icns via a
  make-icon.sh helper (librsvg + iconutil). Both files are
  committed so build.sh and CI don't need librsvg — regenerate
  locally with ./make-icon.sh after editing the SVG. Info.plist
  gets CFBundleIconFile: AppIcon; the .app bundle picks it up in
  Finder, Launchpad, and (if you unhide the Dock) the Dock. The
  menu-bar icon stays as the externaldrive.badge.wifi SF Symbol —
  optimized for 22 pt template rendering.

Version surfaces

• Daemon main.version bumped to 0.3.1.
• Companion CFBundleShortVersionString / MARKETING_VERSION bumped
  to 0.3.1; Preferences window auto-picks it up from Info.plist.
• No API or on-wire change — the daemon bump is only so
  Version 0.3.1 shows correctly in the web UI footer.

Full Changelog: 0.3.0...0.3.1