native renderer: game world at MT_RENDER_SCALE (0.75 on Android), MSAA default 2

Draws recorded inside CPythonApplication::RenderGame are marked Render3DDraw::scene and
drawn by a scene pass compatible with pass_ into a reduced-resolution image, composited
where RenderGame drew; the UI stays full resolution. --render-scale / MT_RENDER_SCALE,
desktop default 1.0 (unchanged path).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/host/live_client.cpp

@@ -373,7 +373,8 @@ int run_live_client(
     native_perf::PerfLog perf_log;
     if (g_perf_log) {
         perf_log.open("device=" + renderer.device_name() + " present_mode=" + renderer.present_mode_name() +
-                      " msaa=" + std::to_string(renderer.msaa_samples()) + " size=" + std::to_string(renderer.width()) +
+                      " msaa=" + std::to_string(renderer.msaa_samples()) +
+                      " render_scale=" + std::to_string(renderer.render_scale()) + " size=" + std::to_string(renderer.width()) +
                       "x" + std::to_string(renderer.height()) + " gpu_skinning=" + std::to_string(gpu_skinning) +
                       " terrain=" + std::to_string(native_terrain));
     }