Standalone dev tool (pyserial) that drives the companion binary protocol over a
serial port — DEVICE_QUERY/APP_START, battery/storage, stats, telemetry with a
Cayenne-LPP decoder, and meshcomod CLI commands. No firmware coupling; dev-only.
Ported verbatim from PR #29 by @samuelcoustet.
Co-Authored-By: samuelcoustet <257299705+samuelcoustet@users.noreply.github.com>
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
