To answer this question, I decided to divide the app into three parts:
- UI part: Sadly there's no support for foreign languages at the moment. The app does support i18n, but no .po files are included in the current release. I think I will start providing .po files in future releases so that anyone interested in it can provide translations for other languages.
- Speech recognition part: The answer is yes, although it is not included by default. The app uses Vosk as a cross-platform speech recognition backend, and you can get the Russian / Ukrainian model from the website (see https://alphacephei.com/vosk/models), unpack it into the `data/nn/vosk/` directory, then set the model in Settings > Speech recognition to that model.
- LLM part: Just like Speech recognition, you can run your own instance of koboldcpp with a Russian / Ukrainian model, then let satania-buddy connects to it.