mukaschultze/ha-must-inverter ? reverse-engineered prompt

Build me a Home Assistant integration for a Must solar inverter that I can install through HACS and set up from the Home Assistant UI.

I want it to connect to my inverter over serial, TCP, or UDP, then show live data like solar production, battery status, and other useful readings as Home Assistant entities. It should also let me change the few safe settings the inverter supports, but please be careful and avoid writing anything risky by default, especially anything that could mess with calibration or device health.

It should work well for the common Must models people use, and if there are other similar models that use the same protocol, support those too if possible. Make the setup straightforward, with a config flow and clear options, and make sure the integration is stable and safe for normal home use. If you need to check current docs or Home Assistant best practices, look them up online first.