Thanks for sharing this, using kiwi is surely a good way to do it, but in order to keep everything smoother for mobile users we have decided to develop this focusing our attention on Telegram App users.

It would be possible to integrate keychain by having the user log in on telegram on kiwi browser, we can definitely integrate it into the next release!
Unfortunately there are some features like scheduled posts, for which I think keychain is not enough.

Thanks again for your suggestions.