Publish first usable Windows release instructions and validation

docs/ROADMAP.md

@@ -2,6 +2,11 @@
 
 Status: implementation started; no production release yet. Windows VM tests use CPU only.
 
+Karl's release priority, 2026-10-13: publish a usable first Windows version and
+install it on DEV-WIN11 now. Extensive platform/GPU, clean-machine, signing and
+large-library checks are deferred follow-up, not blockers for this initial
+release. Keep their evidence and unchecked production gates intact.
+
 ## Required product scope (user clarification)
 
 - Desktop UI is primary; semantic setup/indexing/search must require no terminal.