Happy to help you here, so right now recording and local file modifications aren’t supported within Nowa itself, but you can do them with Flutter code (they will be soon with our coming MarketPlace). Same for text to OCR as well.
Regading image picker we released one already. We will release a documentation about it in the coming week.
Adding libraries can be done as you do for a normal Flutter project. When you have it as a local project, you can simply open it in any IDE like VS code and import the libraries you need and use them inside. You can then go back to Nowa and continue building there as normal