Function send_chat_request_with_validation 

pub async fn send_chat_request_with_validation(
    client: &LLMClient,
    model: &str,
    prompt: &str,
    history: &[ChatEntry],
    system_prompt: Option<&str>,
    max_tokens: Option<u32>,
    temperature: Option<f32>,
    provider_name: &str,
    tools: Option<Vec<Tool>>,
) -> Result<(String, Option<i32>, Option<i32>)>