I'm playing with AI UOS integrated in deepin, I upload a text file to the knowdlege base to test how it works but in the agent list there is no Personal Knowledge Assistant like stated on the help manual, how can I ask questions about the file I upload? is there a in-depth manual to read about the integrated module AI OUS, how to configure and utilize in a dept manner. Is there a free AI model to add to the online model? I tryed the voice speaking AI but when I speack my language it write only chinese caracters, is there a way to let recognize other languages? please help thank you