feat: per-chat and/or per-model system prompt

[lainedfles]

Describe the solution you'd like
Enable unique system prompt per-chat and/or per-model. This will allow for flexibility when working with multiple models.

[jukofyork]

Yeah, per-model settings would be good too:

• Coding models need a really small temperature and a repeat penalty of just a fraction over 1.0 to work properly.
• Story generation models need a much higher temperature and repeat penalty.
• General purpose models need something in between.

[OneAtDrt]

I vote for per chat system prompt, either loaded from library or setup in the chat window when creating the new message to have the ability to select the role - system.

[jcdiv47]

I was wondering if it could be like the Modelfiles but the prompt version of it, i.e., one could import/export/create/discover all sorts of pre-set prompts and/or parametes setting. In the meantime, just like the llm model selection for each chat, there could be an entry where prompts could be selected for different chats as well.

[minhhungit]

ChatTemplate or ChatProfile is good name I guess

[tjbck]

Per model config has been added to our dev branch!