Read model name from agent config in Gemini and Ollama APIs.

[mkbehr]

This also removes the llmType field in the Ollama API config.

Depends on #445.

[mkbehr]

@vivtsai, are there any extra changes needed to make migration work from old data with the Ollama config's llmType field set?

[dimits-ts]

@vivtsai, are there any extra changes needed to make migration work from old data with the Ollama config's llmType field set?

Testing the Ollama server is pretty easy, you can have it up and running with two commands. Only commenting this because the way I recommended previously no longer works!

Also freezing development of #433 until this get merged, since it will most likely need a refactor of all models.

[vivtsai]

@vivtsai, are there any extra changes needed to make migration work from old data with the Ollama config's llmType field set?

Thanks for flagging! No, this looks good (the only case where I'm looking at migration is when a new field is added, since that will prevent existing (stored in Firebase) objects from being properly typecast.