Use reqwest 0.12 with rustls-tls and add timeouts

Also improve review prompt with line calculation instructions, switch
feedback to French, and enable reasoning for OpenRouter.

src/open_router.rs

@@ -1,3 +1,5 @@
+use std::time::Duration;
+
 use openrouter_rs::{Message, api::chat::ChatCompletionRequest};
 
 pub struct OpenRouterClient {
@@ -6,10 +8,15 @@ pub struct OpenRouterClient {
 }
 
 impl OpenRouterClient {
-    pub fn new(token: &str, model: &str) -> anyhow::Result<Self> {
+    pub fn new(token: &str, model: &str, timeout: u64) -> anyhow::Result<Self> {
         Ok(Self {
             client: openrouter_rs::OpenRouterClient::builder()
                 .api_key(token)
+                .http_client(
+                    reqwest::Client::builder()
+                        .timeout(Duration::from_secs(timeout))
+                        .build()?,
+                )
                 .build()?,
             model: String::from(model),
         })
@@ -18,6 +25,7 @@ impl OpenRouterClient {
     pub async fn chat(&self, msg: &str) -> anyhow::Result<String> {
         let request = ChatCompletionRequest::builder()
             .model(&self.model)
+            .enable_reasoning()
             .messages(vec![Message::new(
                 openrouter_rs::types::Role::Developer,
                 msg,