Expose the .ico as an Avalonia resource, set it on MainWindow, and
swap the custom SystemDecorations=None for BorderOnly so the icon
appears on the taskbar and window can be resized normally.
- app: ClaudeTask.ico wired as ApplicationIcon and MainWindow.Icon
via avares URI
- installer: ClaudeTaskSetup.ico wired as ApplicationIcon and embedded
as a WPF Resource so WizardWindow and SettingsWindow can reference it
via pack URI
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>