Reframe wine-access CTest environment requirement

A quiet live Wayland desktop is not assumed to yield a reliable single-environment 7/7. Record that a purpose-built private compositor/XWayland harness may be needed and whether split-environment evidence suffices is open for review.

docs/testing/wine-proton.md

@@ -266,9 +266,13 @@ display-environment sensitivity, not a code regression: under a
 private Xvfb screen the review-capture pair passes while
 `foreground-focus` fails for want of real window-manager focus
 semantics, and on the live desktop the pattern inverts. Every
-test passes in at least one environment; one single-environment
-7/7 run (live desktop while it is quiet) is still owed before
-this phase closes.
+test passes in at least one environment. A single-environment
+7/7 run has not been established on this Wayland system and may
+require a purpose-built private compositor/XWayland harness with
+real window-manager focus semantics; an idle live desktop should
+not be assumed to provide it reliably. Whether the present
+split-environment evidence suffices is an open question for the
+maintainer and other reviewers before this phase closes.
 
 - Diablo IV (Proton app 2344520), 2026-11-02 — **passed so far.**
   Exclusion-list-only configuration, global controller-only switch