qwen3 tool rendering

[csmith23]

I've been using tinker to finetune qwen3 30b a3b instruct on conversations involving tool use, and just wanted to bring up a discrepancy in the qwen3 renderer in the cookbook vs. the jinja templates on huggingface.

In the jinja template, there are the lines

{%- elif message.role == "tool" %}
        {%- if loop.first or (messages[loop.index0 - 1].role != "tool") %}
            {{- '<|im_start|>user' }}
        {%- endif %}

which render tool responses with the user role, while in the cookbook the role is used as-is,

ob_str = f"{maybe_newline}<|im_start|>{message['role']}\n"

in renderers.py, lines 332 and 445.

The rendering of elements under the "tools" key of a conversation as part of the system prompt is also not implemented, but that seems to be the case for all renderers, not just the qwen ones