fix(debug-hud): FPS arrodonit en lloc de truncat

source/core/system/debug_overlay.cpp

@@ -5,6 +5,7 @@
 #include <SDL3/SDL.h>
 
 #include <cctype>
+#include <cmath>
 #include <string>
 
 #include "core/defaults.hpp"
@@ -35,7 +36,7 @@ namespace System {
         fps_frame_count_++;
 
         if (fps_accumulator_ >= Cfg::FPS_UPDATE_INTERVAL) {
-            fps_display_ = static_cast<int>(fps_frame_count_ / fps_accumulator_);
+            fps_display_ = static_cast<int>(std::lround(static_cast<float>(fps_frame_count_) / fps_accumulator_));
             fps_frame_count_ = 0;
             fps_accumulator_ = 0.0F;
         }