- Fix CodingRate encoding: postcard uses 0-based variant index, not repr(u8) value. CR 4/5 is variant 0, not 1. - Shorten RSSI/SNR display line to fit 21-char width - Python script auto-detects DongLoRa by USB VID:PID (303a:1001), reconnects on device reset/disconnect, no more crash on RST Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>