* Add -reload-theme CLI flag to re-apply theme via IPC
Sends a reload-theme IPC message to a running instance, causing it to
call fyne.CurrentApp().Settings().SetTheme(m.theme). Follows the same
callback pattern as -show (OnReactivate) and quit (OnExit).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
* actually re-read theme file
---------
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>