Redesign tray/app icon as a wooden round shield with iron rim, rivets,
wood grain, and the Syncthing network motif (ring + 3 nodes + spokes)
painted in the state color. Dark shadow outline for wood contrast.
Inspired by Stammtisch hero icon style (warm, illustrated wood tones).
- Dynamic tray icon changes color per state (green/blue/gray/red)
- Static assets: PNG at 7 sizes + multi-size .ico + preview sheet
- Icon generator utility (cmd/icongen)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
