manuals tidy tier 3a: rondes, ternaris, anyofallof, padding, etc.

source/core/rendering/sdl3gpu/sdl3gpu_shader.cpp

@@ -767,7 +767,7 @@ namespace Rendering {
         }
 
         // Copia directa — el upscale lo hace la GPU en el primer render pass
-        std::memcpy(mapped, pixels, static_cast<size_t>(width * height * 4));
+        std::memcpy(mapped, pixels, static_cast<size_t>(width) * static_cast<size_t>(height) * 4);
 
         SDL_UnmapGPUTransferBuffer(device_, upload_buffer_);
     }