feat(gui): redesign kanholec GUI with modern interface and WiX v7 installer
- Complete GUI overhaul with Fyne framework
* Modern dark theme with indigo/pink accent colors
* 4-step setup wizard (Welcome → Server → Auth → Finish)
* Dashboard with proxy list, real-time logs, and config viewer
* Windows Service manager (install/start/stop/uninstall)
* System tray integration with quick controls
- WiX v7 MSI installer
* Auto-registers as Windows Service (manual start)
* Feature tree UI for optional components
* Desktop shortcut and PATH options
* Build script: packaging/windows/build-msi.ps1
- Build system updates
* Added kanholec-windows-gui target (CGO required)
* Added kanholec-windows-msi target
* Separate main_gui.go entry point for GUI builds
GUI binary: bin/kanholec-windows-amd64.exe (31.4 MB)
MSI installer: bin/kanholec-0.69.0-amd64.msi (12.1 MB)
akukanara