The dual-arc setpoint dial uses a Fahrenheit-range scale (60-90) to
match the Lennox reference UI, but climate.control expects Celsius
throughout this codebase. Dragging the dial was sending raw
Fahrenheit values straight into target_temperature_low/high, which
would have commanded wildly wrong setpoints on live hardware.
Also fixes a stale comment pointing at the wrong file after the
panel.yaml extraction.
Waveshare's board wires log output through the same UART USB-C port
used for flashing. ESPHome's default hardware_uart for ESP32-S3 is
USB_SERIAL_JTAG, which is a separate physical port on this board,
so log output was going nowhere the flashing tool could see it.
