Your motivation for this project seems to be to support and create community for lay buddhists who are in areas remote from physical community.
I don’t see how having a database and a robot to talk to is going to create that sense of healthy discussion and community which can be so beneficial for the development of dhamma practice. There are some wonderful Discord (and other communities) which meet regularly for dhamma discussion and sutta discussion specifically. I feel like these kinds of online networks are far more useful than a database of text which are shuffled, stirred and churned out by AI. What online Buddhists are missing out on is connection, community and ritual. They are already listening to too many dhamma talks and reading too many dhamma books.
A better solution to the problem of lack of community is to create community or a mechanism for people to create community. Real human to human, cups of tea and smiles community.