support for system in runprompt

[bzorn]

I've got this code in my script:

const cleanInfo = await runPrompt(_ => {
    // use def, $ and other helpers
    _.def("INFO", parktext.text)
    _.$`You are an expert in web content. 
    Extract out of the file INFO, which is HTML with lots of CSS and HTML tags, 
    the important information that a human would want to know.`
    },
    { model: "ollama:phi3", system: ["system"]}
)

It looks like adding "system" causes an error in the script but when I omit it, the model used to run the runPrompt isn't ollama:phi3.

[pelikhan]

runPrompt does not support system scripts yet. There's another issue on this.

[pelikhan]

Looks like 2 bugs here. System prompts not supported and model info lost.

[pelikhan]

fix for phi3 selection: 5d80928

[pelikhan]

Added