feat: use GoogleCompletionRequest.systemInstruction for system prompt

[PhilKes]

Depends on carlrobertoh/llm-client#61

• Uses Google API's systemInstruction field for system prompts

[PhilKes]

Since I havent been following the development of this plugin the past months, I am not sure but I am guessing up until now thought tokens of reasoning models are also just printed to the user in the chat panel etc, right?
carlrobertoh/llm-client#61 adds the thought fields to the response contents as well, so you could possibly mark the thought content response appropriately, like OpenAI or Google AI Studio does in the chat.

[carlrobertoh]

IIRC the thinking output is never displayed. At least when I initially introduced the Gemini thinking models, the support wasn't there yet (or was intentionally removed or something).

[PhilKes]

IIRC the thinking output is never displayed. At least when I initially introduced the Gemini thinking models, the support wasn't there yet (or was intentionally removed or something).

Well currently a response from e.g. Gemini 2.5 Pro looks like this:

Sometimes the thinking output seems to be in the same code block as the answer.
I guess it would be best to use the new thought boolean to distinguish thought tokens from the actual completion

[PhilKes]

Can you release llm-client v0.8.39 so we can merge this? 🙂

[carlrobertoh]

IIRC the thinking output is never displayed. At least when I initially introduced the Gemini thinking models, the support wasn't there yet (or was intentionally removed or something).

Well currently a response from e.g. Gemini 2.5 Pro looks like this:

Sometimes the thinking output seems to be in the same code block as the answer. I guess it would be best to use the new `thought` boolean to distinguish thought tokens from the actual completion

Yes, we need to use the new parameter. I believe that response is simply describing the CoT coming from the default system prompt itself - "First think step-by-step - describe your plan for what to build in pseudocode, written out in great detail."

[PhilKes]

Solved the conflicts