Controls

The controls packages let applications display and interact with ProCad render scenes.

Package	Purpose
`ProCadSharp.Controls`	Shared viewport, geometry, options, selection contracts, and math.
`ProCadSharp.Controls.Skia`	SkiaSharp renderer for render scene primitives.
`ProCadSharp.Controls.Avalonia`	Avalonia viewer and editor controls.
`ProCadSharp.Controls.Uno`	Uno Platform viewer and editor controls.
`ProCadSharp.Controls.Maui`	MAUI viewer and editor controls.

Packaging Notes

The release workflow packs the reusable controls explicitly. MAUI packing is separated onto macOS because iOS and Mac Catalyst targets require Apple-platform workloads.

Integration Rule

Use controls as render surfaces. Keep document loading, editing services, command runtime, collaboration, and persistence in ViewModels/services.