- Add AppImage build using linuxdeploy
- Add Flatpak build using flatpak-builder
- Create AppRun script for .NET runtime sharing
- Create Flatpak manifest and desktop file
- Integrate both formats into release workflow
- Upload .AppImage and .flatpak as release artifacts
This provides comprehensive Linux packaging support:
- DEB: For Debian/Ubuntu systems
- Linglong: For Deepin/UOS systems
- AppImage: Universal Linux format (download and run)
- Flatpak: Universal Linux format (sandboxed)
All formats share the same .NET runtime for efficiency.
