CodeIgniter 4 Playground

It's really awesome, thanks for your hard work !
Times here can be send their themes for implementation, then perhaps I leave 2 of them:
And so the first thing I would most like to see is an authentication system without the use of third-party libraries and the "ThirdParty" folder.
Well, the second is how to change the structure of the sessions table using the database driver, although I think that this does not apply to this topic and if so then excuse me and accept my first question about authentication.

I would change this world, but God doesn't give me the source.