Restore landscape display and use RNT SoftSPI touch map.

Revert 320x240 create that garbled the panel; map touch to 240x320 like Random Nerd Tutorials.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/main.cpp

@@ -45,10 +45,11 @@ void setup() {
 
   lv_init();
 
-  // 官方 CYD LVGL9：直接 320x240，不用 LV_DISPLAY_ROTATION_*（避免触控二次变换错位）
-  // https://github.com/witnessmenow/ESP32-Cheap-Yellow-Display/tree/main/Examples/LVGL9
+  // RNT / temperature：240x320 + ROTATION_270 → 横屏（勿改成 create 320x240，会花屏）
+  // https://randomnerdtutorials.com/lvgl-cheap-yellow-display-esp32-2432s028r/
   lv_display_t *disp =
       lv_tft_espi_create(SCREEN_WIDTH, SCREEN_HEIGHT, draw_buf, sizeof(draw_buf));
+  lv_display_set_rotation(disp, LV_DISPLAY_ROTATION_270);
 
   lv_indev_t *indev = lv_indev_create();
   lv_indev_set_type(indev, LV_INDEV_TYPE_POINTER);