case 4690 - dev docs: build VM deprecated, releases built on the workstation (backup laptop as fallback)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

devdocs/build/BUILD.md

@@ -3,7 +3,9 @@
 How a full release is built: tools, folder layout, what `build-release.bat` does, and where
 version numbers live. Written for .NET 8 (8.2.4); updated for .NET 10 (8.3.0).
 
-To set up a machine that can run this from scratch, see `DEV-VM-SETUP.md`.
+Releases are built on the workstation; the backup laptop is the fallback. To set up a machine
+that can run this from scratch, use the tool list and install commands in `DEV-VM-SETUP.md`
+(the VM itself is deprecated).
 
 ## What gets built