waveshareteam/ESP32-S3-Touch-LCD-4.3C — reverse-engineered prompt

Build me a working starter project for the Waveshare ESP32 S3 Touch LCD 4.3C board using this repo as the base. I want to flash it to the device and see a clean touch screen interface on the 4.3 inch display, with simple buttons or status cards that prove touch is working, and a basic audio or Xiaozhi AI voice interaction demo if the included firmware supports it.

Please wire up the existing examples and assets instead of starting from scratch. Make it easy for me to configure, build, and flash, with clear steps in the README for Arduino or ESP IDF depending on what this repo actually uses. Keep the UI simple but polished, using LVGL if that is already how the sample works.

Also include basic troubleshooting notes for common first run problems like screen not lighting, touch not responding, or audio not working. Look up the Waveshare docs online if you need the exact board settings.