Compatibility matrix

Dimension	Legacy	Next foundation	Pilot decision
UI	WinForms installer	WPF shell	parallel
Runtime	.NET Framework 4.7	.NET 8 x64	separate EXE
Plugin load	generated multi-NETLOAD	one local NETLOAD	validate first
Package source	network copy	manifest + local cache	no production UNC client yet
Offline	unknown	last valid local version	design policy
Rollback	manual/unknown	previous pointer	foundation tested
AutoCAD version	historical 2019 evidence	discovery for Plant 2026	require runtime confirmation