Manual message scrolling

src/graphics/Screen.h

@@ -220,6 +220,10 @@ class Screen : public concurrency::OSThread
   public:
     OLEDDisplay *getDisplayDevice() { return dispdev; }
     explicit Screen(ScanI2C::DeviceAddress, meshtastic_Config_DisplayConfig_OledType, OLEDDISPLAY_GEOMETRY);
+
+    // Screen dimension accessors
+    inline int getHeight() const { return displayHeight; }
+    inline int getWidth() const { return displayWidth; }
     size_t frameCount = 0; // Total number of active frames
     ~Screen();