Read Wine settings live at poll and spawn

Phase 2 of the Wine/Proton stage (decisions 3, 4, 16, 17, 19 in docs/testing/wine-proton.md): replace the Wine manager's startup snapshot with a live settings source read once per poll, so accepted global settings take effect with no reader restart. The source publishes only the active/global profile's Wine values; per-application profile switching never changes the governing list. A newly listed running program restarts its helper once in the same mode; removals and clearing the global switch never downgrade a running helper.

internal/app/live_settings.go

@@ -15,6 +15,7 @@ import (
 type liveSettings struct {
 	editFieldFocused     func() bool // Installed before workers start; reads cached focus only.
 	current              atomic.Pointer[config.Settings]
+	globalWine           atomic.Pointer[config.WineSettings]
 	preferencesPID       atomic.Int64 // Owned by the preferences window lifetime; zero when closed.
 	application          atomic.Pointer[string]
 	requestedApplication atomic.Pointer[string]
@@ -35,3 +36,24 @@ func (live *liveSettings) notify_clipboard() {
 	}
 }
 func (live *liveSettings) Load() config.Settings { return *live.current.Load() }
+
+// Wine values are global-only: one list governs every prefix regardless of
+// which application has focus. The preferences worker publishes them here
+// only when the active/global profile changes, never when it publishes a
+// per-application profile through Store, so application switching cannot
+// change the governing Wine list. The Wine manager reads them at each poll
+// and helper spawn.
+func (live *liveSettings) StoreGlobalWine(settings config.WineSettings) {
+	settings.ExcludedPrograms = append([]string(nil), settings.ExcludedPrograms...)
+	live.globalWine.Store(&settings)
+}
+
+func (live *liveSettings) LoadGlobalWine() config.WineSettings {
+	current := live.globalWine.Load()
+	if current == nil {
+		return config.WineSettings{}
+	}
+	settings := *current
+	settings.ExcludedPrograms = append([]string(nil), settings.ExcludedPrograms...)
+	return settings
+}