Add it to your “terms of use” as well.
If you decide to turn it into a business, be sure to consult with an attorney (ie. 30mins).
Or you can just put a disclaimer in your extension that some states require two party consent and remind the user to comply with local laws.
Fwiw, I'm on a lot of zoom calls with outside companies that have a "note taker" that is clearly a bot that records video and maybe does transcription. Most of the time it is not mentioned.
I record all my pro teams meeting with OBS in order to be able to watch a part of it in case my attention has been drifting away. It is perfectly legal.
I would totally need their consent if I had any plan to make those videos available to anyone else but that is another subject (diffusion).
I think it is outside the scope of the software to define what one should or shouldn't do depending of every state/country juridiction.