Fix Adreno SIGSEGV: marshal SetSustainedPerformanceMode onto UI thread

The call in OsuGameAndroid.LoadComplete ran on the load thread, which made
ViewRootImpl.checkThread() throw CalledFromWrongThreadException after the
window state had already been partially mutated. On Adreno this invalidated
the active VkSurfaceKHR and crashed the driver inside vkCmdBeginRendering
on the next frame (SIGSEGV at vulkan.adreno.so +0x4, fault_addr=0x28).

Wrap the call in gameActivity.RunOnUiThread(...) like every other Window
mutator in this file already is.

Agent-Logs-Url: https://github.com/winnerspiros/osu/sessions/f3d3c197-120b-4c7d-b2ef-fca9776d19d2

Co-authored-by: winnerspiros <1675249+winnerspiros@users.noreply.github.com>

Author: Copilot

osu.Android/OsuGameAndroid.cs

@@ -267,8 +267,29 @@ protected override void LoadComplete()
 
             // Always enable sustained performance mode for consistent frame delivery.
             // This prevents thermal throttling from causing sudden FPS drops.
-            try { gameActivity.Window?.SetSustainedPerformanceMode(true); }
-            catch { }
+            //
+            // This MUST run on the Android UI thread: SetSustainedPerformanceMode mutates
+            // window state through ViewRootImpl, which enforces single-threaded access via
+            // checkThread() and throws CalledFromWrongThreadException otherwise. On some
+            // OEM frameworks (observed on Samsung One UI / Adreno) that exception unwinds
+            // through setPrivateFlags after the underlying Surface has already been
+            // partially reconfigured, invalidating the active VkSurfaceKHR and crashing the
+            // Vulkan driver inside vkCmdBeginRendering on the next frame.
+            try
+            {
+                gameActivity.RunOnUiThread(() =>
+                {
+                    try { gameActivity.Window?.SetSustainedPerformanceMode(true); }
+                    catch (Exception e)
+                    {
+                        Debug.WriteLine($"[osu!] Failed to enable sustained performance mode: {e.Message}");
+                    }
+                });
+            }
+            catch (Exception e)
+            {
+                Debug.WriteLine($"[osu!] Failed to dispatch sustained performance mode toggle to UI thread: {e.Message}");
+            }
 
             base.LoadComplete();