Aegis is a open-source 2FA app. I'm very happy with it
Ils ne se sont pas contentés d'un simple Fuck u/spez en plus, vraiment très bien
wofi is not maintained anymore, and rofi runs on Wayland!
Giving out such an API key is essentially what the infinity dev does, up until the 1st of July at least.
Reviewing the colab's code, I did not find anything susceptible to leak your API key (or other info) to the author.
However, I have also seen users offering to build apks for others (which implies giving out API keys on top of installing software from a random guy). That seems indeed very dangerous.
Someone made a Google collab notebook that takes your API keys as an input, takes care of the compilation and offers you a download link to get your apk. Zero knowledge needed!