added helper menu

src/core/application/ApplicationManager.h

@@ -94,6 +94,7 @@ private:
     int m_startLevelSelection = 0;
     int m_hoveredButton = -1;
     bool m_showSettingsPopup = false;
+    bool m_showHelpOverlay = false;
     bool m_showExitConfirmPopup = false;
     int m_exitPopupSelectedButton = 1; // 0 = YES, 1 = NO
     bool m_isFullscreen = false;
@@ -140,6 +141,7 @@ private:
     
     // Animation state
     float m_logoAnimCounter = 0.0f;
+    bool m_helpOverlayPausedGame = false;
 
     // Gameplay background (per-level) with fade, mirroring main.cpp behavior
     SDL_Texture* m_levelBackgroundTex = nullptr;