fix: overlay disable also blocks gameoverlayrenderer at Wine's loader

The toggle previously only set DISABLE_VK_LAYER_VALVE_steam_overlay_1=1
(Vulkan layer skip) and SteamNoOverlayUIDrawing=1 (in-process draw skip).
Steam still injected gameoverlayrenderer*.dll into every game; the DLL
just opted out of drawing.

Add WINEDLLOVERRIDES with empty load order on gameoverlayrenderer and
gameoverlayrenderer64 so Wine's loader refuses to map the PE DLLs in
the first place. Three differences from the prior catch-all attempt
(commit 5d03235, reverted) that hung all real-Steam launches:

- Use individual ';'-separated entries instead of a comma-grouped list
  with one trailing '='. The comma-grouped shape was the form that
  hung; individual entries parse unambiguously.
- Drop SteamOverlayVulkanLayer / SteamOverlayVulkanLayer64 from the
  WINEDLLOVERRIDES list. Those are Vulkan-layer DLLs consumed by the
  Vulkan loader, not Wine's PE loader; the Khronos disable env var
  already covers that path.
- Gate the WINEDLLOVERRIDES path on isLaunchRealSteam. In emu mode
  Goldberg replaces SteamAPI and the overlay DLL is never loaded, so
  the override is dead code there; gating it prevents any chance of
  regressing emu-mode boots.

The two existing env vars stay as defense in depth.

Author: TideGear

app/src/main/java/app/gamenative/ui/screen/xserver/XServerScreen.kt

@@ -3220,14 +3220,38 @@ private fun setupXEnvironment(
         envVars.putAll(container.envVars)
         if (!envVars.has("WINEESYNC")) envVars.put("WINEESYNC", "1")
 
-        // Disable the Steam Vulkan overlay layer via its own disable_environment
-        // hook when the user has opted out. This is the Khronos-canonical way to
-        // skip an implicit layer — the loader sees the env var and never
-        // initializes the layer, which avoids the race where Steam re-extracts
-        // the stashed layer files during client startup.
+        // Disable the Steam overlay end-to-end when the user opts out:
+        //
+        //   1. DISABLE_VK_LAYER_VALVE_steam_overlay_1 — Khronos-canonical
+        //      disable hook for the Steam Vulkan implicit layer. The Vulkan
+        //      loader sees the env var and never initializes the layer.
+        //      (No Wine WINEDLLOVERRIDES needed for the Vulkan layer — it's
+        //      consumed by the Vulkan loader, not Wine's PE loader.)
+        //   2. SteamNoOverlayUIDrawing — read by gameoverlayrenderer*.dll
+        //      itself; tells the in-process DLL to skip drawing once it's
+        //      already been loaded.
+        //   3. WINEDLLOVERRIDES with empty load order on the two
+        //      gameoverlayrenderer PE DLLs — makes Wine's loader refuse
+        //      to map the DLLs into the game process at all. Real-Steam
+        //      only: in emu mode Goldberg replaces SteamAPI and the overlay
+        //      DLL is never loaded, so the override is dead code there;
+        //      gating it on isLaunchRealSteam also avoids any chance of
+        //      regressing emu-mode boots.
+        //
+        //   Each entry is its own `;`-separated key — comma-grouping the
+        //   names with a single trailing `=` (the prior shape) was the form
+        //   that hung Steam launches; individual entries parse unambiguously.
         if (container.isDisableSteamOverlay) {
             envVars.put("DISABLE_VK_LAYER_VALVE_steam_overlay_1", "1")
             envVars.put("SteamNoOverlayUIDrawing", "1")
+            if (container.isLaunchRealSteam) {
+                val overlayOverride = "gameoverlayrenderer=;gameoverlayrenderer64="
+                val existing = envVars.get("WINEDLLOVERRIDES")
+                envVars.put(
+                    "WINEDLLOVERRIDES",
+                    if (existing.isEmpty()) overlayOverride else "$existing;$overlayOverride",
+                )
+            }
         }
 
         val graphicsDriverConfig = KeyValueSet(container.getGraphicsDriverConfig())

app/src/main/res/values/strings.xml

@@ -679,7 +679,7 @@
     <string name="launch_steam_client_beta">Launch Steam Client (Beta)</string>
     <string name="launch_steam_client_description">Reduces performance and slows down launch\nAllows online play and fixes DRM and controller issues\nNot all games work</string>
     <string name="disable_steam_overlay">Disable Steam Overlay</string>
-    <string name="disable_steam_overlay_description">Skip injecting gameoverlayrenderer64.dll\nAchievements still unlock but popups won\'t appear\nMay fix crashes on Unity/Vulkan games</string>
+    <string name="disable_steam_overlay_description">Blocks the GameOverlayRenderer DLLs at Wine\'s loader and skips the Steam Vulkan overlay layer\nAchievements still unlock but popups won\'t appear\nMay fix crashes on Unity/Vulkan games</string>
     <string name="sdk_cloud_save_subdir_section">Cloud Save Bridge</string>
     <string name="sdk_cloud_save_subdir_section_description">For games that store cloud saves inside their install directory (e.g. Dead Cells). Leave blank unless saves aren\'t syncing. \"Use Recommended\" pulls from the Ludusavi manifest.</string>
     <string name="sdk_cloud_save_subdir_label">Local save subdirectory</string>