Function simple_assist_msg

subprojects/llama.cpp/tests/test-chat.cpp:254–263

};

static common_chat_msg simple_assist_msg(const std::string & content, const std::string & reasoning_content = "", const std::string & tool_name = "", const std::string & arguments = "", const std::string & id = "") {
    common_chat_msg msg;
    msg.role = "assistant";
    msg.content = content;
    msg.reasoning_content = reasoning_content;
    if (!tool_name.empty()) {
        msg.tool_calls.push_back({ tool_name, arguments, id });
    }
    return msg;
}

static delta_data init_delta(const struct common_chat_templates * tmpls, const std::vector<std::string> & end_tokens,
                             const common_chat_msg & user_message,