chore(examples): add submodule and remove LVGL examples

boards/esp32-s3-lcd-43/DisplayDriverGFX.h

@@ -1,29 +1,42 @@
 #pragma once
 
-#include <IDisplayDriver.h>
-#include <Arduino_GFX_Library.h>
+#include <Arduino.h>
+#include "ScreenState.h"
+#include "IDisplayDriver.h"
+
+struct TouchEvent {
+    bool pressed = false;
+    int  x = 0;
+    int  y = 0;
+};
+
+struct HoldState {
+    bool  active    = false;
+    bool  completed = false;
+    float progress  = 0.0f;   // 0.0 – 1.0
+};
 
 class DisplayDriverGFX : public IDisplayDriver {
 public:
+    // ── IDisplayDriver ──
     void begin() override;
     void setBacklight(bool on) override;
     void render(const ScreenState& state) override;
+
     TouchEvent readTouch() override;
-    int  dashboardTouch(int x, int y) override;
+    int dashboardTouch(int x, int y) override;
     HoldState updateHold(unsigned long holdMs) override;
     void updateHint() override;
-    int  width() override;
-    int  height() override;
+
+    int width() override;
+    int height() override;
+
+    // ── Internal ──
+    static DisplayDriverGFX& instance();
 
 private:
-    void expanderInit();
-    void touchInit();
-    void drawBoot();
-    void drawDashboard(const ScreenState& state);
-    void drawAlert(const ScreenState& state);
-    void drawOff();
-    Arduino_RGB_Display* _gfx = nullptr;
-    bool _lastTouched = false;
-    unsigned long _holdStart = 0;
+    // Touch handling
+    TouchEvent _lastTouch = {false, 0, 0};
+    unsigned long _pressStartMs = 0;
+    bool _isHolding = false;
 };
-