`Runic.Platform.Linux`

Version 0.7.0-preview.5, target framework net10.0. Read from the published package.

Gtk3PortalWindowOwner class: Exports portal parents from the explicitly selected GTK3 presentation.
LinuxPlatformProvider class: Explicitly selects GTK services without loading another OS provider.
LinuxTextClipboard class: GTK clipboard with presentation-thread ownership and asynchronous transfer draining.