fix: Update Window Event Handling and Emulator Destructor Logic

- Added handling for SDL_WINDOWEVENT_RESIZED, SDL_WINDOWEVENT_MINIMIZED, SDL_WINDOWEVENT_HIDDEN, SDL_WINDOWEVENT_RESTORED, and SDL_WINDOWEVENT_SHOWN in the window event processing to improve rendering behavior during window state changes.
- Modified the Emulator destructor to stop emulation without calling Cleanup(), as the renderer is already destroyed, ensuring proper shutdown behavior.

src/app/core/window.cc

@@ -196,9 +196,19 @@ absl::Status HandleEvents(Window& window) {
             window.active_ = false;
             break;
           case SDL_WINDOWEVENT_SIZE_CHANGED:
+          case SDL_WINDOWEVENT_RESIZED:
+            // Update display size for both resize and size_changed events
             io.DisplaySize.x = static_cast<float>(event.window.data1);
             io.DisplaySize.y = static_cast<float>(event.window.data2);
             break;
+          case SDL_WINDOWEVENT_MINIMIZED:
+          case SDL_WINDOWEVENT_HIDDEN:
+            // Window is minimized/hidden - nothing to render
+            break;
+          case SDL_WINDOWEVENT_RESTORED:
+          case SDL_WINDOWEVENT_SHOWN:
+            // Window is restored - resume normal operation
+            break;
         }
         break;
     }

src/app/emu/emulator.cc

@@ -50,7 +50,9 @@ using ImGui::TableNextColumn;
 using ImGui::Text;
 
 Emulator::~Emulator() {
-  Cleanup();
+  // Don't call Cleanup() in destructor - renderer is already destroyed
+  // Just stop emulation
+  running_ = false;
 }
 
 void Emulator::Cleanup() {