fix(doorbell-touch): add touch debug logging and missing TFT_MISO pin

boards/esp32-32e-4/DisplayDriverTFT.cpp

@@ -11,6 +11,10 @@ void DisplayDriverTFT::begin() {
 
     Serial.printf("[GFX] Display OK: %dx%d\n", DISPLAY_WIDTH, DISPLAY_HEIGHT);
 
+    // Debug: check if touch controller is responding
+    uint16_t z = _tft.getTouchRawZ();
+    Serial.printf("[TOUCH] Raw Z=%d (non-zero = controller detected)\n", z);
+
     drawBoot();
 
     digitalWrite(PIN_LCD_BL, HIGH);
@@ -118,10 +122,12 @@ void DisplayDriverTFT::drawDashboard(const ScreenState& st) {
 TouchEvent DisplayDriverTFT::readTouch() {
     TouchEvent evt;
     uint16_t tx, ty;
-    if(_tft.getTouch(&tx, &ty)) {
+    uint8_t touched = _tft.getTouch(&tx, &ty, 100);
+    if(touched) {
         evt.pressed = true;
         evt.x = tx;
         evt.y = ty;
+        Serial.printf("[TOUCH] x=%d, y=%d\n", tx, ty);
     }
     return evt;
 }