fix usd metric

src/bot_actions/review.rs

@@ -46,7 +46,7 @@ pub async fn exec_review(
 
         review_result.cost = chat_result.cost;
         if let Some(cost) = review_result.cost {
-            metrics::openrouter_cost_usd((cost / 100.0).round() as u64);
+            metrics::openrouter_cost_usd(cost);
         }
 
         let final_review_markdown = review_result_to_markdown(&review_result);