hendiCtrl.py is now import-only. The new CLI app exposes serial port/baudrate, version/capability info, converter test, heater test, and firmware update as separate flags, instead of one fixed script. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01GpePKZiEZWbGo9HrfuML6U