I've used Colab extension on VS Code and Cursor. There's no option for viewing the files on the virtual machine at the moment. I trained a computer vision model and couldn't download it. I was able to check that the model exists but couldn't see it as Colab VM files are not shown using Colab extension for IDEs.

Furthermore, the download function wouldn't download the file nor pop up any download request on my browser. I couldn't mount Google Drive either as no authentication request was brought up. I double checked my browser pop up settings and even switched my default browser to see if it helps but none of these solved the problem.

Overall, it seems to me that this extension still needs some improvement. Using Colab on web is a better option at the moment.