Ease startup

[moxious]

Thanks for doing this plugin, I'm enjoying it. Submitting a patch to correct two things that would help startup be easier.

You're using tinyllama by default (which is fine) but in the ollama docs they're now recommending llama3, so out of the box install, this can go wrong and result in 404 errors as tinyllama is not available.

[joeldg]

This is also using phi by default and not phi3