Record deferred Battle.net Phase 4 result

docs/testing/wine-proton.md

@@ -348,3 +348,11 @@ this phase closes.
   no AT-SPI owner stored a title. Menus on the physical display
   and the remaining applications' Braille checks are still
   outstanding.
+- Battle.net bootstrapper, 2026-11-02 — **open; investigation
+  deferred by the maintainer.** Evidence: installed binary and
+  audible report. The launcher reached its login, but the login
+  did not read. No root-cause diagnosis was attempted; the
+  maintainer defers this Chromium-engine surface as a later task
+  because of its separate intricacies and scope. Under decisions
+  11–12 it remains a completion blocker unless the maintainer
+  later amends the done criteria; deferral is not a pass.