Replace the placeholder header image with the brand emblem from the mod
repo's Branding/ set (downscaled to 512px, transparency preserved), and set
it as the window/taskbar icon.
Cross-platform C# GUI to replace the Qt/C++ Host GUI, on the same dotnet
toolchain as the server. MVP: load/save commonwealth-server.json, Start/Stop
the CommonwealthOnline.Server process (published exe, then dll, then source
run), and stream its output to a live log. Themed to the Commonwealth Online
brand (near-black + amber). Builds clean on net8.0.
Next: player list + kick/ban via the admin port, then retire the Qt host.
